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Author Topic: Older DR 600/650 thread (Pre mid 90's)  (Read 34783 times)

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Offline Veemax

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Re: Older DR 600/650 thread (Pre mid 90's)
« Reply #520 on: February 04, 2012, 04:16:52 pm »
I cant for the life of me understand the Why and How behind that last oddball plate pair ... I guess some guy spent months if not years doing R&D around this thing. Meantime your rather offbeat model sure holds some surprises eh ?

Glad the Suz man cleared it up.  As my old colleague used to say Money Solves Most Problems !

Do not panic when you first ride off with your new clutch btw , expect it to be moerse eratic and behave horribly until it settles in.

Like you I renewed that whole stack. It's really, REALLY reassuring when you know you have the correct parts installed correctly, and a delight when the thing no longer slips ! YEAH. Back the way it was when it left the plant in Japan, before some confused guy with no manual porked it all up.

You know the RTFM rule huh ?

Read The Farken Manual !!!!  :imaposer:
(Tiger1050/DR650SE/DR650ES/VS800/VZ800/LS650/XLX350R/GN400-tracker/YZX200)

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Offline Wildcoast

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Re: Older DR 600/650 thread (Pre mid 90's)
« Reply #521 on: February 04, 2012, 04:19:06 pm »
The Suzuki guy just ordered me the wrong parts  :deal:
I will call him monday, cancell the extra washers, order part 5, try find some similar wire, slap her back together and pray it bloody works  :imaposer:
 

Offline Wildcoast

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Re: Older DR 600/650 thread (Pre mid 90's)
« Reply #522 on: February 04, 2012, 04:22:15 pm »
BTW the only manuals I have (I have two) both show the clutch as in Deepbase's download he put up.

I have no idea what rock my bike crawled out from under , but it's a mission to find diagrams for it, wiring , clutch etc.

Maybe it is the R&D model that escaped into the big wild world
 

Offline Veemax

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Re: Older DR 600/650 thread (Pre mid 90's)
« Reply #523 on: February 04, 2012, 04:25:11 pm »
I checked and rechecked with my Suz guy THREE times to make sure I was getting the right front disk, he was ALSO about to order the wrong part. It's tricky this model variant thing from this generation ...

And still , when the part lands I ain't paying until I slap my old disk on the counter for a dead match ....

We all know the automotive guys need , er, a little help sometimes .... ( we won't mention KTM )
(Tiger1050/DR650SE/DR650ES/VS800/VZ800/LS650/XLX350R/GN400-tracker/YZX200)

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Offline Wildcoast

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Re: Older DR 600/650 thread (Pre mid 90's)
« Reply #524 on: February 04, 2012, 04:26:27 pm »
I'm taking your advise on Monday for sure VIN number for the dealer.
 

Offline volroom

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Re: Older DR 600/650 thread (Pre mid 90's)
« Reply #525 on: February 06, 2012, 09:09:53 am »
Veemax, I remember you saying that you've got a stage two conversion on your old DR, right? So, you cut the airbox? If so, can you gooi some pics - I'm doing it as well and need to know how to cut.

MxRob funny enough says that the bigger the whole the LESS dirty your airfilter becomes - would have thought the opposite to be true.

I've got the exhaust sorted, so dyno tuning and dynokit will be done soon. Will drill the slide of the carb and clip the spring - it the latter is a good idea? Seems controversial
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Offline Wildcoast

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Re: Older DR 600/650 thread (Pre mid 90's)
« Reply #526 on: February 06, 2012, 09:16:18 am »
Slide drilled and spring cut are for throttle responce only, won't up the performance, have heard of weaker spring causing throttle to wind on a bit in rough conditions, dunno if you want that, accelerating by itself  when you hit a bump?

I have two springs, let me experiment first before you go and chop yours.

I am keeping my bike as stock as possible, not trying to turn it into a rocket ship , reliability more important than performance to me.

 

Offline volroom

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Re: Older DR 600/650 thread (Pre mid 90's)
« Reply #527 on: February 06, 2012, 09:32:10 am »
Ok, let me know what you think of cut spring. Reliability also key for me, doing stage two mod I think won't really make it less reliable. Only concern would be that you should clean your airfilter more frequently. MXrob by the way said that you have to cut proper hole - otherwise it makes a noise and somehow the airfilter becomes MORE dirty

Look at http://kientech.com/DJDR650AbMod.htm
To get idea of the hole.

I'll cut the hole soon. BTW - I marked my sparkplugs and tried to get the electrodes pointing toward the inlet ports - without using washers. Was lucky - pretty much. Also, I ground the exhaust flange weld - it was definitely restricting airflow.

Can't wait...

Heard guys talk about the front wheel lifting with the pumper carb - I mean, that is SERIOUS acceleration. I don't have the pumper carb, but getting anywhere close to that kind of acceleration...good stuff

Will try to adjust balancer and maybe also check compression (with gauge) before dyno tuning
2003 R1150GS
 

Offline Veemax

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Re: Older DR 600/650 thread (Pre mid 90's)
« Reply #528 on: February 06, 2012, 10:31:37 am »
Remember my 94 DR is BONE STOCK but for a scorch pipe. But here are pics of my 08 DR ...airbox additional hole, 150 main, screen removal, header weld reduction ( note Superbike Solutions claim some degree of exhaust restriction at this point increases torque ! ) , and a Geoff Talbot pipe which is straight-through.

I ran a K&N for a while then went back to stock to not compromise my bikes longevity.

My DR against a bone stock DR of the same model belonging to my mate , leaves it for dead.

I would not drill the slide nor clip the spring , as the new DR slide has only one hole to save the needle .... as I've said before you don't want a twitchy throttle over rough stuff , I wanted more top end power and I got it, but I wanted the controlled power and economy of a stock 1/4 to 1/2 throttle.

I left the needle STOCK, it's lean yes but I tune for Hot and High and want range and economy when not racing at full throttle.

There is a flat spot during warm up to remind me I have mods , and also to ride like an intelligent person before optimum running temperature !







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

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Offline lecap

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Re: Older DR 600/650 thread (Pre mid 90's)
« Reply #529 on: February 06, 2012, 10:41:34 am »
Re the wire ring in the clutch: It's not continuous but rather some sort of a very flimsy circlip. Chances are good that it will give you hell when you try to fit it again (it gave me hell). Just throw it away as I did, no adverse effects noticable.
In theory I think it prevents the two washers from dislodging and causing some sorts of hassles which I don't think is really possible with the clutch & engine assembled & running. Might be a factory assembly line thing. (?)

Removing the mesh screen is not really advisable since it's the only thing that stops your engine from ingesting stuff (big stuff) if the air filter tears or is poorly fitted. Also prevents backfire from scorching the filter.
"If you think it's expensive to hire a professional to do the job, wait until you hire an amateur." (Red Adair)
 

Offline Veemax

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Re: Older DR 600/650 thread (Pre mid 90's)
« Reply #530 on: February 06, 2012, 11:31:51 am »
I am now aware of the screen as a backfire damper , and also read there is NO data suggesting screen removal adds any performance, if I did it all again the screen will stay.

I did a screen removal on my KLR back in 08 but that LOOKED restrictive ! ???

I am now of the school that a little top end breathing never hurt anyone , as we live in a country that tolerates aftermarket pipes , so why not ride a BIKE and not a goddamn sewing machine , but for the rest , ( oh my God am I getting old ??? ) ....stock works man ! If you wanna go faster get a faster bike !!!

 :laughing4:

I've been at track days where guys make poephols of themselves blaming their ZX10 for being slow because it's not the latest model ... and then you see an old guy blow them away on a ratty 5yr old CBR600.

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

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Offline Wildcoast

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Re: Older DR 600/650 thread (Pre mid 90's)
« Reply #531 on: February 06, 2012, 12:04:50 pm »
With regards to that wire in the clutch, see pic, part number 5 (ring wave washer) was missing, I have ordered it now, maybe the wire was put there as a bush mechanic fix to the missing part, the wire was damaged when I removed it , so if I need to I'll replace it with some "Mr Tooth" steel trace wire I use for gamefish  :biggrin:
 

Offline volroom

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Re: Older DR 600/650 thread (Pre mid 90's)
« Reply #532 on: February 06, 2012, 12:17:44 pm »
Thx for pics Veemax. AFAIK dynotune with dynojet kit, increasing airflow - would not necessarily increase fuel consumption. Will have to see I guess. I want extra oomph on my old thumper, as much as is possible without causing reliability issue and/or high fuel consumption.

What mods would affect reliability would you say?
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Offline Wildcoast

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Re: Older DR 600/650 thread (Pre mid 90's)
« Reply #533 on: February 06, 2012, 12:28:55 pm »
This is the advanced R&D WC airbox mod with Geoff Talbott intermediate pipe (arriving in about two days) 155 Dyno Jet main jet and needle
 

Offline volroom

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Re: Older DR 600/650 thread (Pre mid 90's)
« Reply #534 on: February 06, 2012, 12:30:40 pm »
Will show pics of mine when it's done. WC, you gonna dyno tune as well? I just realised that trying to get that fuel/air mixture spot on without the necessary equipment is a guessing game. No thx
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Offline Wildcoast

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Re: Older DR 600/650 thread (Pre mid 90's)
« Reply #535 on: February 06, 2012, 12:36:43 pm »
I recon I could guessing game it pretty close and spend money saved on juice and beer funds for a lekker ride.....

Just been RTFM'ing the 91 needs TDC on compression stroke for balance chain adjustment, does not mention this for other models is it safe to say you can set this with the piston anywhere?
« Last Edit: February 06, 2012, 02:04:55 pm by WILDCOAST »
 

Offline Veemax

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Re: Older DR 600/650 thread (Pre mid 90's)
« Reply #536 on: February 06, 2012, 02:42:00 pm »
Guesstimating main jet for free flowing system over the years , sometimes supported by real Lambda data , I have arrived at a personal starting point of 1.07 x stock main ... but can be as high as 1. 22 on a Four ( extraction effect more pronounced ) , but more like an outside max 1.14 for a seriously gas flowed thumper.

I reckon with this cam I'd go 1.07 , maybe try 1.1 to find the upper end ? The old dead-kill highway trick is still a good tool for mainjet selection.

That means with Mikuni jets you'd be 147 to 151 on the main , with Dynojet sizes of course ....um..... you're lost !

On the reef of course, some Kentucky windage would be wise. Big thumpers breath crapply ANYWAY , so being on the reef is less of a disadvantage  to a thumper than to a screaming GSXR at 12000 rpm .... so maybe ponder this too ?

Can't see any benefit of TDC on the balancer chain, except maybe it eliminates any over-flick surprises while you have the doo-hickey loose !?? Maybe someone had a good reason to put that in the manual , so if you've gone to the trouble to RTFM , then may as well ATFM !!!! hahahahahhahaaaa.



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Offline Wildcoast

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Re: Older DR 600/650 thread (Pre mid 90's)
« Reply #537 on: February 06, 2012, 02:46:56 pm »
155 DJ is equal to just in between a 145 and 147.5 mikuni
« Last Edit: February 06, 2012, 02:51:12 pm by WILDCOAST »
 

Offline Veemax

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Re: Older DR 600/650 thread (Pre mid 90's)
« Reply #538 on: February 06, 2012, 03:31:20 pm »
Saved THAT in a flash ! Thanks. So I think your 155DJ is on the money for the reef then, beer and gas money ka-ching. One day when you get the chance you can validate everything on a proper calibrated dyno but that must be very close to optimum.
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Offline SuperDavexlv750r

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Re: Older DR 600/650 thread (Pre mid 90's)
« Reply #539 on: February 07, 2012, 08:20:37 am »
Fantastic, now I just have to do valves etc, before my pipe arrives, good motivation.

Had someone keen to buy my DR , she is not for sale!
Keep a look out for one for the guy, he is on the forum as well.

Yeah having owned a gs650 shaftie and GS850g I basically decided there is no other bike but Suzuki, besides an old airhead BMW but thats another story, they just seem built better and have tougher engines than most other bikes.

What kind of price was he wanting to pay for a DR, pre 1995?

I may be interested to let mine go as well as my XLV750R. Too many bikes My wife tells me.
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