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Author Topic: Older DR 600/650 thread (Pre mid 90's)  (Read 33990 times)

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Offline Veemax

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Re: Older DR 600/650 thread (Pre mid 90's)
« Reply #900 on: August 24, 2012, 08:09:30 am »
What's the piston/bore clearance measure SD?
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Offline lecap

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Re: Older DR 600/650 thread (Pre mid 90's)
« Reply #901 on: August 24, 2012, 09:57:40 am »
Standard finished cleaarance of a +/- 100mm sleeved bore to piston would be between 0.045mm and 0.070mm.
Wear limit is often given as 0.10mm and something like 0.02mm out of round.

Perfornace piston manufacturers sometimes call for slightly larger clearance than standard factory spec. Not all wonderful. Reason is the lighter forged piston heats up and expands quicker on start up leading to seizure if it's not cleared enough. The larger piston to bore clearance unfortunately also leads to higher wear of piston & rings :-\
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Offline SuperDavexlv750r

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Re: Older DR 600/650 thread (Pre mid 90's)
« Reply #902 on: August 25, 2012, 08:20:40 pm »
What's the piston/bore clearance measure SD?

Not sure of exact measurements / clearance. But all good - I have sourced a set of rings and need to check it out with motor engineer.

So if it meets specs as per Suzuki we going to do the piston coating, combustion chamber and probably inside bore of exhaust header.

Also doing slide mod on BST40 carb. I have a GSXR 1000 can that I can fit as well. So looks like its coming together.

Will be making a Pooratech tool tube then should look at making crash bars.
If you don't wings - you will never fly!

Honda XLV 750 R, Suzuki DR 650 R, Honda CBR1100xx (Blackbird), Honda XRV 750 Africa Twin, Suzuki RF 900 R, Yamaha FJ 1100, Honda CBX 1000, Suzuki GT 750, Yamaha DT 125
 

Offline SuperDavexlv750r

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Re: Older DR 600/650 thread (Pre mid 90's)
« Reply #903 on: August 29, 2012, 05:36:38 pm »
What's the piston/bore clearance measure SD?

Not sure of exact measurements / clearance. But all good - I have sourced a set of rings and need to check it out with motor engineer.

So if it meets specs as per Suzuki we going to do the piston coating, combustion chamber and probably inside bore of exhaust header.

Also doing slide mod on BST40 carb. I have a GSXR 1000 can that I can fit as well. So looks like its coming together.

Will be making a Pooratech tool tube then should look at making crash bars.

Okay - so i need to order valve stem seals - though I had some with new gasket set I purchased. 2 days from Suzuki sounds fair to me.
Tomorrow - hopefully I get to Sartor Bros to take parts for coating. It seems motor will be runnig much cooler when done and putting out a nice increase in power.

Seriously thinking to re profile cam as per Pro Cycels spec.

Sounds as if I my have a healthy motor with lots of longevity in it.

No I need to convince wife why I need to keep the DR. Really dont want to sell it.

I may let the XLV750R go...

Ag nee man this is so unfair. :pot:
If you don't wings - you will never fly!

Honda XLV 750 R, Suzuki DR 650 R, Honda CBR1100xx (Blackbird), Honda XRV 750 Africa Twin, Suzuki RF 900 R, Yamaha FJ 1100, Honda CBX 1000, Suzuki GT 750, Yamaha DT 125
 

Offline SuperDavexlv750r

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Re: Older DR 600/650 thread (Pre mid 90's)
« Reply #904 on: August 31, 2012, 09:39:01 am »
Waiting on call from suzuki to collect valve stem seals.

Piston, barrell, head, valves and zorst dropped of for coating at Sartor Brothers for Powerkote of components.

cleaning bike up and its looking nicer each day.

Once assembled - we service shock and we then ready to dyno and looking forward to showing some xr650l's waht Suzuki is made of.
If you don't wings - you will never fly!

Honda XLV 750 R, Suzuki DR 650 R, Honda CBR1100xx (Blackbird), Honda XRV 750 Africa Twin, Suzuki RF 900 R, Yamaha FJ 1100, Honda CBX 1000, Suzuki GT 750, Yamaha DT 125
 

Offline Veemax

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Re: Older DR 600/650 thread (Pre mid 90's)
« Reply #905 on: August 31, 2012, 09:57:01 am »
THAT is gonna get INTERESTING !!!

What's your wifes phone number ?  :pot:
(Tiger1050/DR650SE/DR650ES/VS800/VZ800/LS650/XLX350R/GN400-tracker/YZX200)

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Offline SuperDavexlv750r

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Re: Older DR 600/650 thread (Pre mid 90's)
« Reply #906 on: August 31, 2012, 12:45:24 pm »
THAT is gonna get INTERESTING !!!

What's your wifes phone number ?  :pot:

It is oh eight three DANGEROUS :xxbah: :xxbah:
If you don't wings - you will never fly!

Honda XLV 750 R, Suzuki DR 650 R, Honda CBR1100xx (Blackbird), Honda XRV 750 Africa Twin, Suzuki RF 900 R, Yamaha FJ 1100, Honda CBX 1000, Suzuki GT 750, Yamaha DT 125
 

Offline SuperDavexlv750r

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Re: Older DR 600/650 thread (Pre mid 90's)
« Reply #907 on: September 07, 2012, 09:44:59 pm »
got parts back from Powerkote. Head assembled on Monday and then we look at putting it all together.

Will try post some pics of the coated parts before assembly.
If you don't wings - you will never fly!

Honda XLV 750 R, Suzuki DR 650 R, Honda CBR1100xx (Blackbird), Honda XRV 750 Africa Twin, Suzuki RF 900 R, Yamaha FJ 1100, Honda CBX 1000, Suzuki GT 750, Yamaha DT 125
 

Offline Veemax

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Re: Older DR 600/650 thread (Pre mid 90's)
« Reply #908 on: September 08, 2012, 09:09:00 am »
 :happy1:
(Tiger1050/DR650SE/DR650ES/VS800/VZ800/LS650/XLX350R/GN400-tracker/YZX200)

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Offline SuperDavexlv750r

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Re: Older DR 600/650 thread (Pre mid 90's)
« Reply #909 on: September 08, 2012, 09:46:06 am »
HKGK!

Also have a 2012 titanium GSXR 1000 SACS exhaust can. don't know if it will help to make more power ( free flowing) but will fit and try. If not right will open and make free flow and repack a bit so noise nice - not too loud as my previous RoadMaster stainless steel pipe was. No one wanted to ride behind me with that pipe. But boy did it sound sweet when you started her.

The excitement is building up now... ::) ::) :thumleft:
If you don't wings - you will never fly!

Honda XLV 750 R, Suzuki DR 650 R, Honda CBR1100xx (Blackbird), Honda XRV 750 Africa Twin, Suzuki RF 900 R, Yamaha FJ 1100, Honda CBX 1000, Suzuki GT 750, Yamaha DT 125
 

Offline Veemax

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Re: Older DR 600/650 thread (Pre mid 90's)
« Reply #910 on: September 08, 2012, 03:50:38 pm »
I can tell you that my bone stock ( except for Scorch zorst ) 94 DR stays with my ex heavily modified KLR ( 33 nhp to 45 bhp , then I added a Schnitz 685 piston , so say 46 bhp ) , I sold the KLR to a mate and we ended up on an open road WFO blast , and the stock DR even then with a tired bore stayed with that 46 bhp KLR so exactly , that I think you will see 46 bhp on the Dyno ....+/-  24

How's your starting point fueling configured ?

(Tiger1050/DR650SE/DR650ES/VS800/VZ800/LS650/XLX350R/GN400-tracker/YZX200)

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Offline SuperDavexlv750r

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Re: Older DR 600/650 thread (Pre mid 90's)
« Reply #911 on: September 08, 2012, 07:28:19 pm »
Running standard jetting, when head was off valves were burning a beautifut marie biscuit colour.


Would like to get dyno jet needle - hoping to dyno with Freeze when ready.


Remember before opening and rehoning bore - Iwas able to beat a modded BMW 650. Don;t know how good that is but bike could see 170km/h top speed and had awesome mid range too. Very quick revving too. And a shit load of compression.
If you don't wings - you will never fly!

Honda XLV 750 R, Suzuki DR 650 R, Honda CBR1100xx (Blackbird), Honda XRV 750 Africa Twin, Suzuki RF 900 R, Yamaha FJ 1100, Honda CBX 1000, Suzuki GT 750, Yamaha DT 125
 

Offline Veemax

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Re: Older DR 600/650 thread (Pre mid 90's)
« Reply #912 on: September 08, 2012, 09:22:29 pm »
" Marie Biscuit Colour " describes well the inside of my Scorch pipe with my squeaky new upper engine and squeaky new totally rebuilt carb running STOCK . So yes , from my side no dire warnings of running lean. These DR's predate the Eurocrats and the main jets are the way a well designed carb engine SHOULD leave the factory. Unlike our brethren on their GS12's , whose uber modern ECU's meter out out PRECISELY the wrong mixture.

I've done many Stage 2 and Stage 3 mods in my time , some with fat horsepower returns , but we have bikes which on paper make 1 bhp less than a KTM640 , I doubt if there is much to gain over a stock setup, without losing out in usability elsewhere. This little voice has me keep my 94DR standard.

Already these older DR's snort and spit in traffic , only just bearable to keep a thumper spinning at 3000 rpm to avoid snatching when stuck behind the inevitable Tazz.

I use my old DR for open road applications , and my '06 DR for city chugging , when I have the choice !

Incidentally , my 06 DR has an additional airbox hole and 150 main , and that microswitch on the throttle at full open is binned , it goes wayyyy better than a stock >96 , but the 94 will STILL leave it for dead !

Interesting how the wilder cam of the 94 uses a slighter smaller jet ! I'm guessing the valve overlap and open valve duration means it has more time to ingest a lungfull of hydrocarbon , so a 137.5 is perfect , where a 140 ( stock) is needed on the shorter induction window, of the newer DR.

Mmm, imagine having your own dyno , when you needed one !

Get rolling soon eh ?

hey I met another dude with an oldtimer DR last week , Norwegian/German guy who flies microlights.

We must all try to get together one day , it would be a helluva hoot.  I need to drag you guys all the way from across the Vaal to my wild place in the Klein Karoo.

Or we should pitch up at a BMW or KTM get-together in formation , and stir  :pot: :pot: :pot:



(Tiger1050/DR650SE/DR650ES/VS800/VZ800/LS650/XLX350R/GN400-tracker/YZX200)

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Offline SuperDavexlv750r

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Re: Older DR 600/650 thread (Pre mid 90's)
« Reply #913 on: September 10, 2012, 07:35:17 am »
The problem pitching at the BMW or KTM gathering is that when we embaraas them with our old DR's they gonna chase us away.
If you don't wings - you will never fly!

Honda XLV 750 R, Suzuki DR 650 R, Honda CBR1100xx (Blackbird), Honda XRV 750 Africa Twin, Suzuki RF 900 R, Yamaha FJ 1100, Honda CBX 1000, Suzuki GT 750, Yamaha DT 125
 

Offline Veemax

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Re: Older DR 600/650 thread (Pre mid 90's)
« Reply #914 on: September 11, 2012, 06:26:51 pm »
I been playin' : )

I tried lower bars on my ole DR , and hacksawed off the rear subframe and binned the number plate thing , moved the tail light assembly up the fender an inch , and mounted the Super Kak SABS plate direct to the fender , about a kg steel into the bin , and I epoxied closed the resultant naked tube ends under the seat .

But I'd better spray the bars , I'll get arrested for being a sexual deviant , PIENK anodising and Khaki ???  :imaposer: :imaposer: :imaposer: :imaposer:

The lower bars I had 'in stock', had to drill the ends ID out to 13mm to take the barkbuster rawl-plug type thingies, but hey , feels goooood on the bike , not so much begging dog position as elbows-out-aggro position : )

So here's my ole timer now :



and here's the anomaly *grin*





(Tiger1050/DR650SE/DR650ES/VS800/VZ800/LS650/XLX350R/GN400-tracker/YZX200)

Who are we, but to provide entertainment for our neighbours? - Jane Austen
 

Offline Veemax

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Re: Older DR 600/650 thread (Pre mid 90's)
« Reply #915 on: September 11, 2012, 06:37:24 pm »
Hey , for fun , here's my Moeg Perd from Apr 2011 with worn out engine , worn out carb , wobbly swingarm , disastrous air filter , buggered cam chain , rusty spoke ends , collapsed fork springs . worn out disk rotor , tired battery, slipping clutch with parts missing, and hidden corrosion .... ja , it's been many, many hours of TLC

Rebuilding old rice burners is time and money , my total "IN" is now R42 000 ! But MAN , does it go well now !!!

(Tiger1050/DR650SE/DR650ES/VS800/VZ800/LS650/XLX350R/GN400-tracker/YZX200)

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Offline Veemax

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Re: Older DR 600/650 thread (Pre mid 90's)
« Reply #916 on: September 11, 2012, 06:48:06 pm »
Lekker Off Topic , but I'm on photobucket , so noga brag pic sorry  ::)

My "other" DR , which , on this forum topic , gives me the right to say how wonderful the OLD DR is too !  OK OK , I'll go away now  :angel12:


(Tiger1050/DR650SE/DR650ES/VS800/VZ800/LS650/XLX350R/GN400-tracker/YZX200)

Who are we, but to provide entertainment for our neighbours? - Jane Austen
 

Offline DR BIG 750

Re: Older DR 600/650 thread (Pre mid 90's)
« Reply #917 on: September 11, 2012, 07:23:10 pm »
nice ,old DR 's rule also got a few of them in various states of repair
twin shox, twin drum air cooled
 

Offline Veemax

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Re: Older DR 600/650 thread (Pre mid 90's)
« Reply #918 on: September 11, 2012, 08:47:20 pm »
Now if I had room in my garage ....... I'd collect too !

I remember collecting spares bikes back in my XT500 phase ....

I always say if you hafta have ONE bike , the DR650 would be it. Which incarnation would depend where you live. The old DR needs open roads.
(Tiger1050/DR650SE/DR650ES/VS800/VZ800/LS650/XLX350R/GN400-tracker/YZX200)

Who are we, but to provide entertainment for our neighbours? - Jane Austen
 

Offline Veemax

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Re: Older DR 600/650 thread (Pre mid 90's)
« Reply #919 on: September 13, 2012, 12:20:04 pm »
Hey guys , the oldtimer DR running a BST 40 has a known improvement for some models that use a pilot air jet of 1.3 , by changing to a newer/more recent 1.4 , this apparently goes a long way to improving off-idle carburetion , especially the known "off-idle rich bog"  that, I imagine,  gets WORSE as the carb ages.

I found cmsnl.com offered the 1.4 as a part today , so I have ordered one , along with a larger shipment.

Yesterday my ole DR did duty farm shopping and exploring , in the hands of my mate Ian. His wife took this action pic , whoooo wheeeee , a pre-96 DR doing what it was meant to do !



(Tiger1050/DR650SE/DR650ES/VS800/VZ800/LS650/XLX350R/GN400-tracker/YZX200)

Who are we, but to provide entertainment for our neighbours? - Jane Austen