Wild Dog Adventure Riding

Technical Section => Make / Model Specific Discussions => Suzuki DR & DRZ => Topic started by: Matie spero on April 23, 2015, 12:31:02 pm

Title: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: Matie spero on April 23, 2015, 12:31:02 pm
Ok so I have done way to much reading regarding the Mikuni BST40 carburettor of the DR650.

Couple of the most predominant and informative sites was:

http://www.advrider.com/forums/showthread.php?t=347184 (http://www.advrider.com/forums/showthread.php?t=347184)

http://www.thumpertalk.com/topic/396373-dr650se-needle-comparison/page-1 (http://www.thumpertalk.com/topic/396373-dr650se-needle-comparison/page-1)

http://drriders.com/topic5201.html (http://drriders.com/topic5201.html)

http://www.roadstarmagazine.com/2003/07/principles-of-modern-motorcycle-carburetor-function/ (http://www.roadstarmagazine.com/2003/07/principles-of-modern-motorcycle-carburetor-function/)

I also took the carb apart and measured everything with a fernier to try and establish what sections of the needle came into play at what throttle position i.e. 1/4, 1/2, 3/4 and full.

from all of this the following mods where made:

Intake side:

1) 50mm hole in airbox
2) Twin Air air filter

Carb:
1) Drilled an extra hole in the slide.
2) Shortened the slide spring by 2,5 turns
3) Pilot jet from 42.5 to 45
4) Main jet from 140 to 152.5
5) Self tapered needle
6) D-shelf mod (grinded off the plastic spacer on the one side)

outlet side:
1) Ground down the weld in the header pipe
2) FMF Q4 muffler




Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering
Post by: Ganjora on April 23, 2015, 12:33:17 pm
did exactly the same to my DR carb,  except the spring.
then pulled the trigger on a Mikuni TM40 pumper carb.
Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering
Post by: Matie spero on April 23, 2015, 12:41:17 pm
Now here's for the interesting part, THE TAPERING OF THE NEEDLE:

So what I did was I took the fernier and measured the stock needle every 2mm (dark blue line).
Also did this for the factory pro needle (green line) that I have and a stock needle, tapered according to the second website above (Red line)...

I then tried my best to get some measurements for a DJ needle of the web, but could only get ruff stuff but this would serve just as an indication (purple line):

what I ended up with was the below:

I decided that I would like to try a two stage taper myself and that then inserted the light blue line, half way between stock and DJ.
Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering
Post by: Matie spero on April 23, 2015, 12:48:45 pm
Now that I have the plan now came the execution part.

I set up a dremmel in a bench vice

For the grinding i got a thick piece of glass to which I super glued 2000 grid wet sanding paper and 1200 grid to the other side.

The 2000 is way to fine and basically did nothing, ended up using the 1200, but if I had to do it again I would have started with 400, then 1200 and then polished with 2000.

Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering
Post by: Matie spero on April 23, 2015, 12:53:20 pm
after a lot of sanding and measuring and sanding and measuring the results below:

The pinkish line is the actual.

Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering
Post by: pielas on April 23, 2015, 01:18:48 pm
Very interesting, I am running the DJ needle currently, let us know your findings on on the modified needle. You are also welcome to come measure the DJ needle if you want.
Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering
Post by: Matie spero on April 23, 2015, 01:42:14 pm
Very interesting, I am running the DJ needle currently, let us know your findings on on the modified needle. You are also welcome to come measure the DJ needle if you want.

Hi pilas

as I am sure this will not be the risrt and last attempt at tapening, I will take you up on than offer to get the presice DJ measurements.

thanks
Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering
Post by: Kykdaar on April 23, 2015, 04:25:22 pm
Very informative.  The forum needs more threads like this :thumleft:

Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering
Post by: pielas on April 23, 2015, 04:51:45 pm
Very informative.  The forum needs more threads like this :thumleft:



Stem saam.

Matie spero, No problem, welcome anytime.

For whats its worth. here my setup:

Intake side:

1) Snorkel out and Airbox opened up fully on top. I have a spare airbox so decided to gut one.
2) Twin Air air filter
3. Firescreen removed

Carb:
1) Drilled an extra hole in the slide.
2) Slide spring still standard, but I'm thinking about cutting it,
3) Pilot jet from 42.5 to 48 ( from KTM 640, Suzuki only stock the standerd size)
4) Main jet 150 ( would like to try a size bigger sometime)
5) DynaJet needle
6) D-shelf mod (grinded off the plastic spacer on the one side)

outlet side:
1) Ground down the weld in the header pipe
2) GSXR muffler ( Stuart has a gutted GSXR muffler of mine that we will be experimenting with, will see how it goes, The GSXR is still restictive)
3) Header Ceramic coated inside & out ( supposed to improve airflow, not sure, I had it done as I was tired of cleaning the damn thing)

Bike is running very good right now. You must take it for a ride when visiting. Only issue I have is a sort of uneven idle, but plan to play around with that this weekend. Bike was Dyno'd about a month ago. Extended air-screw in so should not be too difficult.

I have a FCR carb, but enjoying the Mikuni right now.
Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering
Post by: chopperpilot on April 23, 2015, 06:36:14 pm
Matie

Is jy met verlof? Jy't baie tyd op hande!

Is Julies se sake in orde?

Sal graag terugvoer oor die werkverrigting van jou DR na al die modifikasies wil sien!


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Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering
Post by: Matie spero on April 24, 2015, 09:35:51 am
Very informative.  The forum needs more threads like this :thumleft:



Stem saam.

Matie spero, No problem, welcome anytime.

For whats its worth. here my setup:

Intake side:

1) Snorkel out and Airbox opened up fully on top. I have a spare airbox so decided to gut one.
2) Twin Air air filter
3. Firescreen removed

Carb:
1) Drilled an extra hole in the slide.
2) Slide spring still standard, but I'm thinking about cutting it,
3) Pilot jet from 42.5 to 48 ( from KTM 640, Suzuki only stock the standerd size)
4) Main jet 150 ( would like to try a size bigger sometime)
5) DynaJet needle
6) D-shelf mod (grinded off the plastic spacer on the one side)

outlet side:
1) Ground down the weld in the header pipe
2) GSXR muffler ( Stuart has a gutted GSXR muffler of mine that we will be experimenting with, will see how it goes, The GSXR is still restictive)
3) Header Ceramic coated inside & out ( supposed to improve airflow, not sure, I had it done as I was tired of cleaning the damn thing)

Bike is running very good right now. You must take it for a ride when visiting. Only issue I have is a sort of uneven idle, but plan to play around with that this weekend. Bike was Dyno'd about a month ago. Extended air-screw in so should not be too difficult.

I have a FCR carb, but enjoying the Mikuni right now.

Stuart told me to remove the fire screen as well, I think I will do that too.. what could be the possible drawbacks???

I also have the stock spring and factory pro spring as spares. you can take my FP spring if you want and cut it, if it doesn't work you still have your stock spring.

On main jets I will be getting a couple of each sizes 150, 152.5 155, 157.5 will keep every one in the loop and will play around and then anyone can get from me what I don't use... Gave kykdaar my 142.5, 145 and 147.5 as he is not keen on making holes in his airbox for now.

I can also try and get you a 145 pilot if you want (got one in the FP kit I got with the bike).

My thoughts would be the 152.5 or the 155 will be the spot-on's on the mains

Where do you do your dyno's?


Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering
Post by: Matie spero on April 24, 2015, 09:40:52 am
Matie

Is jy met verlof? Jy't baie tyd op hande!

Is Julies se sake in orde?

Sal graag terugvoer oor die werkverrigting van jou DR na al die modifikasies wil sien!


Sent from my iPad using Tapatalk

hahahaha, nee, ekt nou soveel aangejaag dat ek mamma Durban toe moet vat die naweek om op temaak....

by die werk, werk dit as volg:
Daar is n excel spreadsheet oop so mense dink ek werk, niemand besef ek is eintelik beesig om naalde temeet en te plot nie... hahahaha

Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering
Post by: lecap on April 24, 2015, 09:51:24 am
...
Stuart told me to remove the fire screen as well, I think I will do that too.. what could be the possible drawbacks???
...

The screen prevents your engine from ingesting stuff. Stuff like the screw which is supposed to hold your air filter in place :o
A good compromise would be a screen made with fewer wires and larger holes. This would reduce the flow resistance considerably. whilst still serving the purpose.
Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering
Post by: Matie spero on April 24, 2015, 10:17:40 am
...
Stuart told me to remove the fire screen as well, I think I will do that too.. what could be the possible drawbacks???
...

The screen prevents your engine from ingesting stuff. Stuff like the screw which is supposed to hold your air filter in place :o
A good compromise would be a screen made with fewer wires and larger holes. This would reduce the flow resistance considerably. whilst still serving the purpose.

I will have a look at this, maby make a screen from that fine wire mesh you place inform of windows?
Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering
Post by: pielas on April 24, 2015, 11:55:27 am

Where do you do your dyno's?



I went to BB Motorsport, Brian Baragwanath ( the guy competed in the Dakar on a Quad for Team Rhide SA). Just of Botha Ave in Centurion close to the SPCA.

http://www.yellosa.co.za/company/861650/bb-motorsport (http://www.yellosa.co.za/company/861650/bb-motorsport)

Seems like they know what they are doing. Cost was R600.
Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering
Post by: Matie spero on April 24, 2015, 11:56:59 am

Where do you do your dyno's?



I went to BB Motorsport, Brian Baragwanath ( the guy competed in the Dakar on a Quad for Team Rhide SA). Just of Botha Ave in Centurion close to the SPCA.

http://www.yellosa.co.za/company/861650/bb-motorsport (http://www.yellosa.co.za/company/861650/bb-motorsport)

Seems like they know what they are doing. Cost was R600.

Great stuff, that's 3km from my house!!!
Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering
Post by: Matie spero on April 24, 2015, 11:58:55 am
kyk ook gou hier, het advise nodig:

http://www.wilddog.za.net/forum/index.php?topic=170654.20 (http://www.wilddog.za.net/forum/index.php?topic=170654.20)
Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering
Post by: Matie spero on June 10, 2015, 02:10:04 pm
ok so I finally got Deedre back from BB motorsport today after some dyno tuning:

below is the results :
light green and purple lines:

Max HP: 44.94
Max Torque: 48.17

pilot jet 45
main jet 152.5
air screw 1.5 turns out
50mm hole in air box
snorkel removed.

Red and turquoise lines:

main jet 146
air fuel screw 2.5 turns out.

Max HP:48.5
Max Torque:51.71





Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering
Post by: Matie spero on June 10, 2015, 02:16:00 pm
an extreamly interesting test though, took the side cover off the air box, and ran it again.

Had a 0.3hp improvement , but look at the torque curves!

a 56% deference at low end!!!!!

Thus more air is not better, on this setup!
Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: chopperpilot on June 10, 2015, 02:26:16 pm
Lyk na goeie krag en torque!

Hoe voel en trek jou DR nou?

Watter naald, en posisie het jy gebruik?

Trek joune nou beter as Stuart se DR?

Die 50mm air box gat, is dit slegs met die snorkel uit, of is die oorspronklike gat vergroot na 50mm?

Jy't seker nie nou 'n keuse as om te kom wys by die XR Fest nie! (Het jou 'n PM in hierdie verband gestuur.)


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Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: Matie spero on June 10, 2015, 02:36:47 pm
Lyk na goeie krag en torque!

Hoe voel en trek jou DR nou? SOOOOOOS N DIER, die krag deur die revs voel dubbeld

Watter naald, en posisie het jy gebruik? Die een wat ek self getaper het, op posissie nr 3

Trek joune nou beter as Stuart se DR? ek het nog nie Stuart sin getrek nie, is ook nie van plan om dit te try nie...

Die 50mm air box gat, is dit slegs met die snorkel uit, of is die oorspronklike gat vergroot na 50mm? nee snorkel is uit en n ekstra 50mm gat is in geboor

Jy't seker nie nou 'n keuse as om te kom wys by die XR Fest nie! (Het jou 'n PM in hierdie verband gestuur.) ek wil baie graag, gaan beste try


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Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: Matie spero on June 10, 2015, 02:51:24 pm
Lyk na goeie krag en torque!

Hoe voel en trek jou DR nou? SOOOOOOS N DIER, die krag deur die revs voel dubbeld

Watter naald, en posisie het jy gebruik? Die een wat ek self getaper het, op posissie nr 3

Trek joune nou beter as Stuart se DR? ek het nog nie Stuart sin getrek nie, is ook nie van plan om dit te try nie...

Die 50mm air box gat, is dit slegs met die snorkel uit, of is die oorspronklike gat vergroot na 50mm? nee snorkel is uit en n ekstra 50mm gat is in geboor

Jy't seker nie nou 'n keuse as om te kom wys by die XR Fest nie! (Het jou 'n PM in hierdie verband gestuur.) ek wil baie graag, gaan beste try


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ek wil net baie duidelik maak, die doel van die oeffening was nie om n bike te kry wat beter trek as die volgende ou sin nie....

Ek is steeds oortuig dat as jy die geld het om n pumper carb te kry is dit n beter/makliker roete om te volg!
Ek het dit nie en het dus my eie needle getaper en al die ander tricks wat mens op die internet kry gaan uit probeer!

hierdie is slegs n weergee van resultate wat op n pooratech manier verkry kan word..

die hele koste van die uitstappie vir my was n R600 dyno.....

As mens nou vergeet van die oopsie wat ek met die slide guide gehaad het.......
Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: StuartC on June 10, 2015, 03:02:42 pm
You lie,, you did ride my bike, I will be ordering my head gasket tomorrow and doing the head soon, I'll take it for a Dyno at BB as well and we can compare
Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: Matie spero on June 10, 2015, 03:21:59 pm
You lie,, you did ride my bike, I will be ordering my head gasket tomorrow and doing the head soon, I'll take it for a Dyno at BB as well and we can compare

YES I RODE YOUR BIKE but I never pulled anything of yours.. hahahahaha

would be great to see the comparison!
Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: StuartC on June 10, 2015, 03:26:23 pm
hahahaha,, ok I see it now,,,
Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: StuartC on June 10, 2015, 03:29:11 pm
The backfire screen is exactly what it say's, if there is a blowback/flame it will ignite the air filter the screen prevents that, i have only seen it happen on competition bikes with a hell of an overlap on the valves though.
Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: chopperpilot on June 10, 2015, 06:35:43 pm
Matie

Dis uitstekende waarde vir geld!

Die comment oor Stuart se DR was maar 'n beentrek! Meer om reaksie by hom uit te lok, mits hy die boere taal kan lees!

Het jy nog die standaard lugfilter?


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Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: Matie spero on June 11, 2015, 09:07:56 am
Matie

Dis uitstekende waarde vir geld!

Die comment oor Stuart se DR was maar 'n beentrek! Meer om reaksie by hom uit te lok, mits hy die boere taal kan lees!

Het jy nog die standaard lugfilter?


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Ekt haar destyds gekoop met n twin air airfilter, kan nie onthou dat ek die OEM filter saam gekry het nie.

Ek het haar gistraand gou weer om die blok gevat, bliksem die smiles kan nie groter nie!!!!

Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: chopperpilot on June 11, 2015, 10:21:24 am
Matie

Dis uitstekende waarde vir geld!

Die comment oor Stuart se DR was maar 'n beentrek! Meer om reaksie by hom uit te lok, mits hy die boere taal kan lees!

Het jy nog die standaard lugfilter?


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Ekt haar destyds gekoop met n twin air airfilter, kan nie onthou dat ek die OEM filter saam gekry het nie.

Ek het haar gistraand gou weer om die blok gevat, bliksem die smiles kan nie groter nie!!!!


Jy't nou weer my lus aangewakker om aan my DR te karring! :drif:

Ek hardloop nog OEM filters, maar het 2 TwinAirs in die kas. :thumleft:

Is maar skrikkerig vir die TwinAirs met die stof waar ek ry! ;)

Die OEMs doen hul werk goed. Jy moet net seker maak hulle gly nie van die "filter cage" af nie! :o

Daarvoor het ek 'n inspeksie gat aan die regterkant van die airbox geboor, wat met 'n rubber grommet toemaak. :thumleft:
Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: Matie spero on June 11, 2015, 10:29:14 am
Nee maar dans ek BLY, dis moer lekker om met die goed te speel!!!

ekt nou al gery dat my air filter in een dag amper toe geclog is aan die buite kant, maar toe ek hom afhaal was die binne kant silver, en ek bedoel silver skoon!!!!!

die twin air's is goed vir my!

ook nog nooit gehaad waar hy afgly nie.
Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: chopperpilot on June 11, 2015, 10:39:25 am
Nee maar dans ek BLY, dis moer lekker om met die goed te speel!!!

ekt nou al gery dat my air filter in een dag amper toe geclog is aan die buite kant, maar toe ek hom afhaal was die binne kant silver, en ek bedoel silver skoon!!!!!

die twin air's is goed vir my!

ook nog nooit gehaad waar hy afgly nie.
Goed om te hoor! :thumleft:

Sal dan maar die pakkie oopmaak! ;)
Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: Kykdaar on June 11, 2015, 11:59:26 am
Ek het n UNI filter op.

Blykbaar die enigste filter van tot n sekere micron filter - gaan Google maar.

Kos dubbel soveel soos die Twinair, maar ek reken dit is n beter filter, en het beter lugvloei.
Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: Jacobsroodt on June 11, 2015, 12:21:12 pm
Cool. Ek is besig met 'n XF650 Freewind wat dieselfde motor in het, maar met 32mm carbs.
Interessant - die Accelerator Module doen vir brandstofinspuiting engines wat groter jets doen vir 'n vergasser masjien - meer petrol!☺
Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: johann c pretorius on June 17, 2015, 10:24:56 am
More Pielas. Jou problem met die uneven idling is die pilot jet groote. Jy sal vind met daai groote wat jy in het ,dat as jy die pilot screw heeltemal indraai dat jou fiets moontlik nog gaan idle. Jesse van Kienteck en Pro Cycle stel voor dat die pilot standard bly vir beste resultate. Die BST carb is bekend vir decel popping as jy n ander pyp op het.   
Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: StuartC on June 29, 2015, 12:58:34 pm
Matie, according to the dyno your scooter is pushing out way more than mine,
HP 44 @ 5500
NM 64.6 @4500
Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: Matie spero on June 29, 2015, 01:06:38 pm
Matie, according to the dyno your scooter is pushing out way more than mine,
HP 44 @ 5500
NM 64.6 @4500

Goeie bliksem, but that torque you are producing is insane!!!!!

torque makes for much more fun than HP, that just gives you topend!

those revs seems very low though!
Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: StuartC on June 29, 2015, 05:46:28 pm
Matie, according to the dyno your scooter is pushing out way more than mine,
HP 44 @ 5500
NM 64.6 @4500

Goeie bliksem, but that torque you are producing is insane!!!!!

torque makes for much more fun than HP, that just gives you topend!

those revs seems very low though!
Love the torque,, hahaha,, now it will be opperation move the torque curve up 1500 rpm
Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: Alphat on July 13, 2015, 08:36:23 am
Matie, according to the dyno your scooter is pushing out way more than mine,
HP 44 @ 5500
NM 64.6 @4500

Are these figures corrected for altitude? Are they engine output or wheel output?
Very impressive figures for up on the reef, especially the torque
Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: StuartC on July 13, 2015, 02:32:33 pm
I have no idea it was done on the same dyno as Matie's
Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: Matie spero on July 13, 2015, 02:53:49 pm
also don't know what corrected for altitude means, but those are as measured on the rear wheel.
Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: Alphat on July 14, 2015, 10:54:20 am
No problem. At least this gives an indication of what is achievable with these mods.

Wheel dynos can apply two corrections to the output figures. The first is correction for transmission losses to get the output at the crankshaft, the rule of thumb for this is 15% but varies considerably. I have no idea what it would be on a DR. The second is correction for altitude where the difference in air density at the test location and at sea level is taken into account. This is also about 15% for Gauteng. All manufacturer output figures are given at sea level. This is pretty annoying for us up on the reef as you need to get 15% more power from your mods before you even match the stock output figures at the coast.   :-\
Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: Matie spero on July 14, 2015, 11:03:18 am
No problem. At least this gives an indication of what is achievable with these mods.

Wheel dynos can apply two corrections to the output figures. The first is correction for transmission losses to get the output at the crankshaft, the rule of thumb for this is 15% but varies considerably. I have no idea what it would be on a DR. The second is correction for altitude where the difference in air density at the test location and at sea level is taken into account. This is also about 15% for Gauteng. All manufacturer output figures are given at sea level. This is pretty annoying for us up on the reef as you need to get 15% more power from your mods before you even match the stock output figures at the coast.   :-\

bliksem, dan wil ek eerder nie vir deedre see toe vat nie!!!!

sy sal n monster wees! hahahaha, effe lean, maar n monster!

ek weet die DR stock gee 37.5 HP op die agterwiel, volgens specs.
Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: chopperpilot on August 16, 2015, 07:13:42 pm
Matie & Stuart

Which rear tyres and pressures were you running at the time of the dyno test?


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Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: Matie spero on August 17, 2015, 11:50:23 am
Matie & Stuart

Which rear tyres and pressures were you running at the time of the dyno test?


Sent from my iPad using Tapatalk

T63 en om en by 2 bar...

hoekom?
Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: chopperpilot on August 17, 2015, 03:22:52 pm
Matie & Stuart

Which rear tyres and pressures were you running at the time of the dyno test?


Sent from my iPad using Tapatalk

T63 en om en by 2 bar...

hoekom?

Dalk het 'n knobbly minder grip as bv 'n Trailwing, en mag jy dalk nog beter lesings kry met 'n ander band?

As die dyno drom baie grof is, dink ek nie dit sal 'n verskil maak nie.

Het jy 'n naald van Stuart se carb wat jy vir my kan taper? (Sal $$$ stuur!)

Ek oorweeg 'n FCR of TM 40 carb, maar kan dalk tevrede wees met 'n paar klein veranderinge op die BST!

Die snorkel is reeds uit, met 50mm gat, asook 150 main, en naald op 2de van onder, het reeds 'n groot verskil gemaak. Naald op 3/5 het 'n flat spot gehad. Onthou ek is nader/laer aan seevlak. Dus meer lug.

Sal graag beter mid range wil he.

Ek verstaan die BST, en is redelik eenvoudig.

Ek het mos 'n DRZ 400 gekoop. Het 'n FCR 39 (maar nie die MX nie) op, maar dit lyk na baie werk.

Groete
Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: Kykdaar on August 19, 2015, 07:36:54 am
Worked on the DR a bit last night. It now has -

Snorkel out and 50mm circular hole drilled for better breathing
Uni-Filter taken out and replaced with better fitting TwinAir Filter
GSXR 1000 Titanium can
42.5 pilot
147 main jet
Tapered needle, second clip from the bottom
D-Shelf mod
Drilled slide
Fuel screw 2 turns out (might increase this slightly).

Took it for a quick spin afterwards - very nice :ricky: :ricky:

 
 
Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: chopperpilot on August 19, 2015, 08:40:32 am
Kykdaar

Het jy 'n taper naald gekoop?

Ek het vriend Matie gevra of hy 'n spaar een het, wat hy vir my kan taper. My nog niks laat weet nie.

My mods is basies dieselfde as joune,,behalwe die slide boor. Sommige manne reken die enjin mag surge as jy dit doen.

Maklik om die gaatjie weer toe te maak!

Het jy die veer van die slide korter gesny? Ek het nie, maar bevestig dit is 2 draaie?

Groete


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Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: Matie spero on August 19, 2015, 08:54:20 am
Kykdaar

Het jy 'n taper naald gekoop?

Ek het vriend Matie gevra of hy 'n spaar een het, wat hy vir my kan taper. My nog niks laat weet nie.

My mods is basies dieselfde as joune,,behalwe die slide boor. Sommige manne reken die enjin mag surge as jy dit doen.

Maklik om die gaatjie weer toe te maak!

Het jy die veer van die slide korter gesny? Ek het nie, maar bevestig dit is 2 draaie?

Groete


Sent from my iPad using Tapatalk

Hi Chopper

sorry ek is onsaglik besig, was nog nie die weer regtig op die forum nie.

Kykdaar het my ekstra naald van Stuart in sy Carb gesit gistraand sien ek....

Sal jou PM stuur.
Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: Kykdaar on August 19, 2015, 08:58:59 am
Chopper,

Ek het n spaar oorspronklike Suzuki naald.

Miskien kan Matie hom vir jou taper, of njy kan dit self doen.
Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: chopperpilot on August 19, 2015, 09:32:02 am
Kykdaar

Het jy 'n taper naald gekoop?

Ek het vriend Matie gevra of hy 'n spaar een het, wat hy vir my kan taper. My nog niks laat weet nie.

My mods is basies dieselfde as joune,,behalwe die slide boor. Sommige manne reken die enjin mag surge as jy dit doen.

Maklik om die gaatjie weer toe te maak!

Het jy die veer van die slide korter gesny? Ek het nie, maar bevestig dit is 2 draaie?

Groete


Sent from my iPad using Tapatalk

Hi Chopper

sorry ek is onsaglik besig, was nog nie die weer regtig op die forum nie.

Kykdaar het my ekstra naald van Stuart in sy Carb gesit gistraand sien ek....

Sal jou PM stuur.
Geen probleem!

PM geantwoord!

Sterkte!


Sent from my iPad using Tapatalk
Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: chopperpilot on August 19, 2015, 09:33:11 am
Chopper,

Ek het n spaar oorspronklike Suzuki naald.

Miskien kan Matie hom vir jou taper, of njy kan dit self doen.
Ek stuur vir julle altwee biltong!👍

Sal dit baie waardeer!


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Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: Kykdaar on August 19, 2015, 09:35:59 am
Cool, ek sal die naald more vir Matie gee sodat hy sy magic kan werk :thumleft:
Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: sidetrack on August 19, 2015, 09:44:55 am
Worked on the DR a bit last night. It now has -

Snorkel out and 50mm circular hole drilled for better breathing
Uni-Filter taken out and replaced with better fitting TwinAir Filter
GSXR 1000 Titanium can
42.5 pilot
147 main jet
Tapered needle, second clip from the bottom
D-Shelf mod
Drilled slide
Fuel screw 2 turns out (might increase this slightly).

Took it for a quick spin afterwards - very nice :ricky: :ricky:

 
 
Jou voet nou uit die support ?
Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: chopperpilot on August 19, 2015, 09:46:07 am
Cool, ek sal die naald more vir Matie gee sodat hy sy magic kan werk :thumleft:
Waardeer groot! Ek dink my DR gaan nou die vinnigste wees! Ha ha!


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Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: Matie spero on August 19, 2015, 09:55:49 am
Cool, ek sal die naald more vir Matie gee sodat hy sy magic kan werk :thumleft:
Waardeer groot! Ek dink my DR gaan nou die vinnigste wees! Ha ha!


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ek het ekstra gaatjie in die slide geboor en spring twee draaie korter geknip, het nie surging nie.

Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: chopperpilot on August 19, 2015, 10:56:23 am
Cool, ek sal die naald more vir Matie gee sodat hy sy magic kan werk :thumleft:
Waardeer groot! Ek dink my DR gaan nou die vinnigste wees! Ha ha!


Sent from my iPad using Tapatalk

ek het ekstra gaatjie in die slide geboor en spring twee draaie korter geknip, het nie surging nie.



Dankie! :thumleft:

En jy het seker 'n ekstra spring van Stuart se carb? ??? :thumleft:
Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: Matie spero on August 19, 2015, 10:57:24 am
Cool, ek sal die naald more vir Matie gee sodat hy sy magic kan werk :thumleft:
Waardeer groot! Ek dink my DR gaan nou die vinnigste wees! Ha ha!


Sent from my iPad using Tapatalk

ek het ekstra gaatjie in die slide geboor en spring twee draaie korter geknip, het nie surging nie.



Dankie! :thumleft:

En jy het seker 'n ekstra spring van Stuart se carb? ??? :thumleft:

Jip.
Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: StuartC on August 19, 2015, 03:23:56 pm
Stuart se spring was ok geknip
Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: Matie spero on August 19, 2015, 03:31:36 pm
Stuart se spring was ok geknip

ok, stuart se geknipte sring is in my carb, en my spring le ongeknip in my parte kas.
Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: Kykdaar on August 19, 2015, 04:40:14 pm
Worked on the DR a bit last night. It now has -

Snorkel out and 50mm circular hole drilled for better breathing
Uni-Filter taken out and replaced with better fitting TwinAir Filter
GSXR 1000 Titanium can
42.5 pilot
147 main jet
Tapered needle, second clip from the bottom
D-Shelf mod
Drilled slide
Fuel screw 2 turns out (might increase this slightly).

Took it for a quick spin afterwards - very nice :ricky: :ricky:

Jou voet nou uit die support ?

Ja, maar kan hom nog net in die 50/50 boot inkry. Intussen sit ek maar en peuter aan die speelgoed.
Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: Matie spero on August 24, 2015, 10:09:46 am
Chopper, het vrydag aand so 4 ure spandeer op jou naald...

kom mooi aan, sien onder die setup en die vordering, blou waarna toe oppad...

Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: chopperpilot on August 24, 2015, 03:14:46 pm
Matie

Ek bewonder jou toewyding...en jou vaardighede! :thumleft:

Die basis (blou lyn) waarna jy werk, waar kom dit vandaan? Ek's nuuskierig!

Groot waardering van my kant! ;)
Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: Matie spero on August 24, 2015, 03:32:18 pm
Matie

Ek bewonder jou toewyding...en jou vaardighede! :thumleft:

Die basis (blou lyn) waarna jy werk, waar kom dit vandaan? Ek's nuuskierig!

Groot waardering van my kant! ;)

Daai blou lyn is my brein kind..... dis die matiespero special lyn....
Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: chopperpilot on August 24, 2015, 03:41:13 pm
Matie

Ek bewonder jou toewyding...en jou vaardighede! :thumleft:

Die basis (blou lyn) waarna jy werk, waar kom dit vandaan? Ek's nuuskierig!

Groot waardering van my kant! ;)

Daai blou lyn is my brein kind..... dis die matiespero special lyn....
Verskil hierdie een van die MK1 naald wat in jou DR is? :thumleft:

Jy weet ek wil vinniger as jy en Stuart wees! :pot: :peepwall:

Jy kan eendag aan my verduidelik hoe die "matiespero special" lyn ontwikkel is! :thumleft:
Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: Matie spero on August 24, 2015, 03:46:31 pm
Matie

Ek bewonder jou toewyding...en jou vaardighede! :thumleft:

Die basis (blou lyn) waarna jy werk, waar kom dit vandaan? Ek's nuuskierig!

Groot waardering van my kant! ;)

Daai blou lyn is my brein kind..... dis die matiespero special lyn....
Verskil hierdie een van die MK1 naald wat in jou DR is? :thumleft:

Jy weet ek wil vinniger as jy en Stuart wees! :pot: :peepwall:

Jy kan eendag aan my verduidelik hoe die "matiespero special" lyn ontwikkel is! :thumleft:

nee hierdie is n poging om te replicate, maar siende dat dit die tweede keer is wat ek dit doen, voel dit klaar of my aanslag die keer beter is en dat ek dink die naald kan beter werk....

Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: chopperpilot on August 24, 2015, 03:51:02 pm
Matie

Ek bewonder jou toewyding...en jou vaardighede! :thumleft:

Die basis (blou lyn) waarna jy werk, waar kom dit vandaan? Ek's nuuskierig!

Groot waardering van my kant! ;)

Daai blou lyn is my brein kind..... dis die matiespero special lyn....
Verskil hierdie een van die MK1 naald wat in jou DR is? :thumleft:

Jy weet ek wil vinniger as jy en Stuart wees! :pot: :peepwall:

Jy kan eendag aan my verduidelik hoe die "matiespero special" lyn ontwikkel is! :thumleft:

nee hierdie is n poging om te replicate, maar siende dat dit die tweede keer is wat ek dit doen, voel dit klaar of my aanslag die keer beter is en dat ek dink die naald kan beter werk....


Ek sal seker nooit seker weet of ek die MK1 of MK2 naald ontvang het nie? ???
Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: Matie spero on August 24, 2015, 03:52:16 pm
jy sal, myne het 5 clip posisies en joune het net 1......
Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: chopperpilot on August 24, 2015, 06:08:01 pm
Beggars can't be choosers!

Ek sal maar net te dankbaar vir 'n performance naaldjie wees!


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Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: Matie spero on August 25, 2015, 08:59:43 am
Beggars can't be choosers!

Ek sal maar net te dankbaar vir 'n performance naaldjie wees!


Sent from my iPad using Tapatalk

No begging, jyt my gehelp destyds met clutch cover!

Ek het ongelukkig nie gistraadn by jou naald uitgekom nie, het vir my n fly rod gekoop, en het destyds n katrolletjie by kyk daar gekry.

en hy he ttoe nou ent nie lekker gelyk by die nuwe stokkie nie, toe spandeer ek heel aand om die katrolletjie oor te doen, sal maby n fototjie post more...
Title: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: chopperpilot on August 25, 2015, 02:42:30 pm
Soos gese...beggars can't be choosers!

Is jy en Kykdaar op pad Dullstroom toe!

Indien wel, laat weet wanneer. Dalk kan ek kom hallo se, en miskien, groot miskien, n pakkie optel!


Sent from my iPad using Tapatalk
Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: Matie spero on August 27, 2015, 01:02:16 pm
Soos gese...beggars can't be choosers!

Is jy en Kykdaar op pad Dullstroom toe!

Indien wel, laat weet wanneer. Dalk kan ek kom hallo se, en miskien, groot miskien, n pakkie optel!


Sent from my iPad using Tapatalk

ek is 12de sept in dullstroom, maar nie saam kyk daar nie.

Het n rum party gereel daar, en die pakkie sal hopeelik vanaand klaar wees....
beplan om vanaand weer tyd temaak vir dit....  :pot:  :pot: :ricky: :ricky:

Title: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: chopperpilot on August 27, 2015, 01:55:36 pm
Soos gese...beggars can't be choosers!

Is jy en Kykdaar op pad Dullstroom toe!

Indien wel, laat weet wanneer. Dalk kan ek kom hallo se, en miskien, groot miskien, n pakkie optel!


Sent from my iPad using Tapatalk

ek is 12de sept in dullstroom, maar nie saam kyk daar nie.

Het n rum party gereel daar, en die pakkie sal hopeelik vanaand klaar wees....
beplan om vanaand weer tyd temaak vir dit....  :pot:  :pot: :ricky: :ricky:
Dankie Matie!

Kan nie wag nie!

Die 12de het ek 'n 60ste verjaardagpartytjie aan. (Ek is self nog ver van dit!)

Jy kan enige manier stuur. Sal met jou regmaak. Postnet, Crossing Centre, Nelspruit kan werk. Jy het my nommer. PM die bankdetail.


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Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: Matie spero on September 03, 2015, 11:50:18 am
Chopper, jou naald is klaar, en as ek dit self mag se, baie beter gedoen as die een wat ek nou in het!!!!
Daar is hier en daar 0.01mm afwykings, maar dis nader as wat myne ooit was!
so amper 8 ure gevat!

kannie wag om jou resultate te kry nie!

gaan jy hom laat Dyno?



Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: chopperpilot on September 03, 2015, 12:31:06 pm
Baie dankie Matie!

Practise makes perfect!

Ek sal maar eendag moet opry, om die DR te laat dyno!

Vir eers maar my beperkte tuning skills op die proef stel.

Effens groter main jet as by julle, en dan met die naald speel.

Waardeer die ure wat jy ingesit het! Glo jy het die uitdaging geniet!


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Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: chopperpilot on September 03, 2015, 12:33:44 pm
Ek sal 'n vergrootglas moet kry, om die verskil tussen "Jaco Plan 1", en "Werklik" raak te kan sien. Vir my perfek!


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Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: Kykdaar on September 03, 2015, 02:01:55 pm
Daai naald van jou rol soos n snooker cue oor die groen felt - baie nice.

Dink ek sal hom ruil vir myne - jy sal nie eers die verskil weet nie >:D ;D
Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: Matie spero on September 03, 2015, 02:33:44 pm
Daai naald van jou rol soos n snooker cue oor die groen felt - baie nice.

Dink ek sal hom ruil vir myne - jy sal nie eers die verskil weet nie >:D ;D

wel nou gaan hy, want joune is maar K@K getaper.....

hahahaha
Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: Kykdaar on September 03, 2015, 02:56:05 pm
Stuart gaan jou bliksem
Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: Matie spero on September 03, 2015, 02:57:07 pm
Stuart gaan jou bliksem

hahahaha, hy moet my eers vang, en my DR is vinniger as syne!!!!
Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: StuartC on September 03, 2015, 07:04:12 pm
Stuart gaan jou bliksem

hahahaha, hy moet my eers vang, en my DR is vinniger as syne!!!!
you think? put my head back on yesterday and found the restrictor wire, now rev's to 8500 freely with proper power huge torque now,
Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: Kykdaar on September 03, 2015, 07:10:08 pm
I see a Topgear style race coming on ;D

Can you give some detail regarding the restrictor you mention?
Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: chopperpilot on September 03, 2015, 07:16:36 pm
Stuart gaan jou bliksem

hahahaha, hy moet my eers vang, en my DR is vinniger as syne!!!!
you think? put my head back on yesterday and found the restrictor wire, now rev's to 8500 freely with proper power huge torque now,
The proof is in the pic! Pse show us.....


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Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: StuartC on September 03, 2015, 08:41:41 pm
Stuart gaan jou bliksem

hahahaha, hy moet my eers vang, en my DR is vinniger as syne!!!!
you think? put my head back on yesterday and found the restrictor wire, now rev's to 8500 freely with proper power huge torque now,
The proof is in the pic! Pse show us.....


Sent from my iPad using Tapatalk
I wish I had taken, just took it off and got stuck in, never thought about taking pics, took a video of the first ride though, sent you a link but please don't share it till I have finished the fine tuning
Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: chopperpilot on September 03, 2015, 09:52:14 pm
Awesome vid Stu! The power is unbelievable! Picking the front up in 4th! But then, you can ride, especially for a pensioner!!!


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Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: StuartC on September 03, 2015, 11:18:55 pm
It;s an electronic restriction Kykdaar, needed to be bypassed now it hit's max power at high RPM, no cams needed
Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: Matie spero on September 04, 2015, 12:46:06 pm
Awesome vid Stu! The power is unbelievable! Picking the front up in 4th! But then, you can ride, especially for a pensioner!!!


Sent from my iPad using Tapatalk

Stu your not playing nice, I also want to see the vid!!!!

why does henk get to see and not me?

no fair!

Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: chopperpilot on September 04, 2015, 12:54:32 pm
Awesome vid Stu! The power is unbelievable! Picking the front up in 4th! But then, you can ride, especially for a pensioner!!!


Sent from my iPad using Tapatalk

Stu your not playing nice, I also want to see the vid!!!!

why does henk get to see and not me?

no fair!



50+ DR rider privilege! :thumleft: :pot: :peepwall:
Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: chopperpilot on September 04, 2015, 12:55:39 pm
Ek het reeds 'n Postnet notification ontvang! :thumleft:

Gaan nou nou daar draai! ;)
Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: Matie spero on September 04, 2015, 12:56:37 pm
Awesome vid Stu! The power is unbelievable! Picking the front up in 4th! But then, you can ride, especially for a pensioner!!!


Sent from my iPad using Tapatalk

Stu your not playing nice, I also want to see the vid!!!!

why does henk get to see and not me?

no fair!



50+ DR rider privilege! :thumleft: :pot: :peepwall:

dis sommer n poef rede!

stuur terug daai naald!

dis n 50 - DR rider privilege! :thumleft: :pot: :peepwall:
Title: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: chopperpilot on September 04, 2015, 01:24:48 pm
Matie

Het jy my nuwe Hyde bash plate gesien....ok net vir die 50+ Klub!!! :imaposer: :peepwall:

(http://images.tapatalk-cdn.com/15/09/04/f88d4fb1e8de47110c7dfb7d754a42c4.jpg)
Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: Kykdaar on September 04, 2015, 01:48:15 pm
Matie

Het jy my nuwe Hyde bash plate gesien....ok net vir die 50+ Klub!!! :imaposer: :peepwall:

(http://images.tapatalk-cdn.com/15/09/04/f88d4fb1e8de47110c7dfb7d754a42c4.jpg)

Dit lyk  :drif: :drif: :drif:
Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: Matie spero on September 04, 2015, 01:48:55 pm
Matie

Het jy my nuwe Hyde bash plate gesien....ok net vir die 50+ Klub!!! :imaposer: :peepwall:

(http://images.tapatalk-cdn.com/15/09/04/f88d4fb1e8de47110c7dfb7d754a42c4.jpg)

a.g.v. forum reels mag ek nie die foto van my nuwe meisie hier post nie, ek wil nie geban word nie....

maar haar tiepe ook net vir die 50- klub!!!!

en nee kyk daar, sys is ons kerk se mense....
nie daai goed wat jy in die donker knyp nie
Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: Kykdaar on September 04, 2015, 01:50:19 pm
Tag en release boet....tag en release >:D
Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: Matie spero on September 16, 2015, 09:13:22 am
KOM CHOPPER, vertel bietjie oor daai naald!

laas wat ek gehoor het het jy gese, ek het myself lanklaas bang gery in die dorp....

Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: Matie spero on September 28, 2015, 03:12:21 pm
KOM CHOPPER, vertel bietjie oor daai naald!

laas wat ek gehoor het het jy gese, ek het myself lanklaas bang gery in die dorp....



nee wat die man gaan ons niks vertel nie sien ek!
Title: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: chopperpilot on September 28, 2015, 03:24:35 pm
KOM CHOPPER, vertel bietjie oor daai naald!

laas wat ek gehoor het het jy gese, ek het myself lanklaas bang gery in die dorp....



nee wat die man gaan ons niks vertel nie sien ek!
Geduld my vriend geduld!

Tussen 2 bike ry naweke en nog 3 dae se werk spanbou ook, kry ek nie veel tyd vir die Forum nie!

Ek het nie vergeet nie!

Hier is so lank 'n foto van die DR in aksie in Swaziland!

(http://images.tapatalk-cdn.com/15/09/28/21dffd14d63b12f09d65b7c33a9c58d6.jpg)


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Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: chopperpilot on September 30, 2015, 07:49:48 pm
Die onlangse 3 dae in Swazi was die meeste pret wat ek nog met die DR gehad.

Meeste van die tyd 'n ligte misreen gehad, en op die hoe berge in die mis gery.

Omstandighede was koeler as normaalweg, maar die rooigrondpaaie snotglad.

Ek het by tye soos 'n ballerina op die DR gebalanseer.

Eerste keer 'n Pirelli MT21 voor op gehad. Spesifiek vir die modder laat opsit. My baie beindruk.

Agter 'n 130 Kenda Big Block, wat soos 'n 120 lyk. My banddruk was aanvanklik effens hoog, en dit later na 1 bar laat sak, beter vastrap in die modder.

Die DR terug in Nelspruit.

(http://images.tapatalk-cdn.com/15/09/30/64b24fb33e7d850ccffce0f898b99c11.jpg)

Die Hyde bash plate was puik. Het wel 'n paar onderonsies met Swazi rotse gehad, wat wys op die plastiek, maar nie op die fiets nie.

(http://images.tapatalk-cdn.com/15/09/30/36da753a90c126472e71c8684079bcbb.jpg)(http://images.tapatalk-cdn.com/15/09/30/48b0accb800b1470e4158677926dccd9.jpg)


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Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: chopperpilot on September 30, 2015, 08:02:24 pm
Nog 'n paar fotos. Dit was my 3de "Swazi Hardcore Ride", en die strafste, maar die lekkerste rit nog!

(http://images.tapatalk-cdn.com/15/09/30/1a1e240f4b9259a53341e2979c92c47a.jpg)(http://images.tapatalk-cdn.com/15/09/30/491d234e85bd5fa79dd6c2c45c3baf9d.jpg)(http://images.tapatalk-cdn.com/15/09/30/efa1bb58ebffec76e722022c22850581.jpg)


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Title: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: chopperpilot on September 30, 2015, 08:08:04 pm
En die laaste fotos.

(http://images.tapatalk-cdn.com/15/09/30/ecbbf107dd9948bac505764789e53608.jpg)(http://images.tapatalk-cdn.com/15/09/30/0472a9ab2b0f11f0c8225d7d65b5cf28.jpg)(http://images.tapatalk-cdn.com/15/09/30/c843937b6aad5304c7f11e50af21a03c.jpg)

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Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: Kykdaar on September 30, 2015, 08:24:26 pm
Lekker man :thumleft:
Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: Matie spero on October 02, 2015, 10:51:35 am
ok, jyt nou mooi vertel van die bande die bash plate en die omgewing, maar nie veel oor die naald...
hahaha!!!

eks jaloers, daai lyk soos my tiepe ry!!!!!!!!!!
Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: chopperpilot on October 02, 2015, 11:33:57 am
My iPad gooi heeltyd 'n "error" uit as ek die thread wil oopmaak. :( (Nou op my PC. :thumleft:)

Sal die naweek kyk of ek die "performance" naald kan uithaal, en 'n foto neem met 'n OEM naald, om die fisiese verskil aan te dui. ;)




Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: chopperpilot on October 02, 2015, 11:59:17 am
Herewith a short write-up on the performance of my DR, after I fitted the "Matie Spearo Tapered Needle". :thumleft:


I never wanted to modify my air box, and only had a performance canister fitted, with jetting done. Did not even had the snorkel removed! :o

Matie Spearo offered to hand taper me an OEM DR needle. He burnt the midnight oil for a few nights! Thank you Matie! ;)

Before I fitted the tapered needle, I removed the snorkel and drilled a 50mm hole next to the snorkel's hole. :thumleft:

I previously had a 150 main jet in, needle on the 3/5 position, 42,5 pilot and airscrew about 1,5 turns out. ;)

When I fitted the tapered needle, the engine, when started immediately felt different, as if a beast was unleashed withinin  it. The idling was however slightly rough. :(

Matie initially advised me to retain the 150 main jet, as the thinner tapered needle results in an enriched mixture. :thumleft:

Matie advised me to fit a 45 pilot, which I had at home, and turn the airscrew 2.5 turns out, to improve the idling. :)

That done, I took it for a quick spin at night around the block. It definitely felt stronger, but I expected a bit more. :(

That Friday, I joined a few other riders for a 3 day ride in Swaziland. This was the first time I could really assess the modifications on the DR.

I don't wheelie the DR, except in the veld, where with the aid of a small bump I can lift the front wheel.

With the tapered needle I was expecting an improvement in the bottom to mid range. With the pull away at Jeppes Reef Border Post, the border personnel dared me to lift the front wheel. To my own amazement it came up under power with ease :o!

Accelaration has vastly improved, and 120 cruising is at about 1/2 throttle.

When cruising at 140km/h, twisting of the throttle results in immediate acceleration.

It cruises at 140km/h with ease.

It was ridden quite hard in Swaziland, but my fuel consumption came to 15.5km/l.

I am sure that at a constant 120km/h cruise it will achieve 20km/l.

I am thrilled with the new-found performance of my DR! :biggrin:

I have 2 DRs, and wondering if Matie would taper me a 2nd needle? ??? ???

 
Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: Matie spero on October 02, 2015, 12:09:23 pm
Herewith a short write-up on the performance of my DR, after I fitted the "Matie Spearo Tapered Needle". :thumleft:


I never wanted to modify my air box, and only had a performance canister fitted, with jetting done. Did not even had the snorkel removed! :o

Matie Spearo offered to hand taper me an OEM DR needle. He burnt the midnight oil for a few nights! Thank you Matie! ;)

Before I fitted the tapered needle, I removed the snorkel and drilled a 50mm hole next to the snorkel's hole. :thumleft:

I previously had a 150 main jet in, needle on the 3/5 position, 42,5 pilot and airscrew about 1,5 turns out. ;)

When I fitted the tapered needle, the engine, when started immediately felt different, as if a beast was unleashed withinin  it. The idling was however slightly rough. :(

Matie initially advised me to retain the 150 main jet, as the thinner tapered needle results in an enriched mixture. :thumleft:

Matie advised me to fit a 45 pilot, which I had at home, and turn the airscrew 2.5 turns out, to improve the idling. :)

That done, I took it for a quick spin at night around the block. It definitely felt stronger, but I expected a bit more. :(

That Friday, I joined a few other riders for a 3 day ride in Swaziland. This was the first time I could really assess the modifications on the DR.

I don't wheelie the DR, except in the veld, where with the aid of a small bump I can lift the front wheel.

With the tapered needle I was expecting an improvement in the bottom to mid range. With the pull away at Jeppes Reef Border Post, the border personnel dared me to lift the front wheel. To my own amazement it came up under power with ease :o!

Accelaration has vastly improved, and 120 cruising is at about 1/2 throttle.

When cruising at 140km/h, twisting of the throttle results in immediate acceleration.

It cruises at 140km/h with ease.

It was ridden quite hard in Swaziland, but my fuel consumption came to 15.5km/l.

I am sure that at a constant 120km/h cruise it will achieve 20km/l.

I am thrilled with the new-found performance of my DR! :biggrin:

I have 2 DRs, and wondering if Matie would taper me a 2nd needle? ??? ???

 

Thanks Chopper!!!!!!

then I believe you experienced what I experienced, after I made the mod, took it from a reasonable bike to a beast!

I am extremely happy that your happy!!!!!

if I can take you back to a conversation we had way back:

But matie why do you want to do all of this?
my DR runs like a dream, what do you want to do with any more?
mine just spins etc...

That grin factor you explained..... that is exactly why!!!!

Enjoy!!!!!


Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: chopperpilot on October 02, 2015, 12:16:38 pm
Matie Spearo

Nogmaals dankie vir jou moeite met die naald! :thumleft:

Ek kan nie glo dat die naald en die oop air box so 'n groot verskil maak nie. :biggrin:

Ek het nog steeds die "back-fire screen" met die OEM filter. Hy kry nou 'n TwinAir. :o

Nou nog net die suspensie verbeter! :thumleft:
Title: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: chopperpilot on October 04, 2015, 03:15:13 pm
Besig om die DR te diens vir die volgende avontuur.

Ek wys 'n paar fotos van my mods.

Airbox

(http://images.tapatalk-cdn.com/15/10/04/102e9d28471aade93b8b1770f7ee1f28.jpg)

Die "Cutex" botteltjie is eintlik touch-up verf. Werk goed om die carb breather waterdig te hou, terwyl die DR gewas word!


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Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: chopperpilot on October 04, 2015, 03:16:35 pm
Die lugfilter na die vorige 3 dag Swazi avontuur.

(http://images.tapatalk-cdn.com/15/10/04/95a2af13e9cf1d582083973a3aeeb2fc.jpg)


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Title: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: chopperpilot on October 04, 2015, 03:19:31 pm
Die carb se breather. Ek het 'n stukkie van 'n ou DR spons lugfilter rond gesny. Ek spuit dit met die rooi filter olie. Blyk baie effektief te wees!

(http://images.tapatalk-cdn.com/15/10/04/0c0aac8ac39e31ccc4469b74385cb189.jpg)(http://images.tapatalk-cdn.com/15/10/04/f3c9e71fa23af653e6c47f6d1a26b164.jpg)

Die "swastika" is die breather se oorspronklike "retainer" wat ek uitgehaal, en effens ge-"trim" het, om die sponsie in posisie te hou.


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Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: chopperpilot on October 04, 2015, 03:25:42 pm
Carb wat skoon is.

(http://images.tapatalk-cdn.com/15/10/04/2b92c9870e0bc4ea176442312ffff044.jpg)




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Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: chopperpilot on October 04, 2015, 03:28:31 pm
OEM needle and the Matie Spearo Hand Tapered Special Edition High Performance needle.

Yes, very different, and a huge difference in performance!

(http://images.tapatalk-cdn.com/15/10/04/881e1604d874d3eaf5171b6a43be507f.jpg)


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Title: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: chopperpilot on October 04, 2015, 03:33:44 pm
Lecap, please don't comment. We are aware of what you advocate.(http://images.tapatalk-cdn.com/15/10/04/5e65561d37203a1dc46e2b966205c8c2.jpg)

Spark plug.

(http://images.tapatalk-cdn.com/15/10/04/d98a48aee8d912a86db74abbc4dfa3ea.jpg)

It looks lean, but has a light grey colour.


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Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: chopperpilot on October 04, 2015, 03:36:30 pm
My bikes are thoroughly cleaned after each adventure.

(http://images.tapatalk-cdn.com/15/10/04/3f76572671fa0c7b7a45ad9210bd7f56.jpg)


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Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: Kykdaar on October 04, 2015, 04:51:28 pm
 :thumleft: Bly om te sien ek is nie die enigste wat glo in n silverskoon DS bike nie ;D
Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: Candyman on October 04, 2015, 08:48:37 pm
,yay,I



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Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: chopperpilot on October 05, 2015, 07:20:08 pm
Kykdaar

Siende dat Matie Spearo seker met verlof is, want hy lewer geen kommentaar hier nie, post ek maar nog 'n silwerskoon DS vir jou!

(http://images.tapatalk-cdn.com/15/10/05/f1af1d6db5e58d30e837155935be2599.jpg)


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Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: Kykdaar on October 05, 2015, 08:12:17 pm
 ;D Ja die mannetjie was nie by die werk vandag nie. Gippo weer lekker >:D

Wat gebruik jy om hom so mooi skoon te kry? Ek sit ure lank met n tandeborsel en paraffin en speel.
Title: Re: DR650 BST40 mikuni CARB pimping and needle tapering *DYNO Results added*
Post by: chopperpilot on October 05, 2015, 09:00:35 pm
Die fiets is geplak met VPS.

Word afgespuit met water met Gardena spuitstuk.

Spuit 50/50 Prepsol/water mengsel met spuitkannetjie.

My tuin ingenieur sit langs die fiets met 'n verfkwas, spons, lap en emmer met gewone karseep. (Wash & Wax)

Moet ook byvoeg dat die fiets nuut gekoop is, en nog nooit omgeval het nie. Amper 7000 kms, 2012 model.

Was goed van die modder na die langnaweek se Mariepskop grondpad rit. My vrou was saam, en my vriend op sy 1200 LC GSA.

As ek 'n nuwe (2de handse) fiets koop, bring ek 'n houer met ou petrol en paraffien nader. My tuin ingenieur ken al die ritueel.


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