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My YSR 200 4 Stroke build!

49K views 383 replies 58 participants last post by  gstegman  
#1 ·
Well i bought a 89YSR50 four weeks ago for $400 delivered with title. I was looking for that exactly (rolling frame) Didn't run. broken fuel petcock. No plastics. Dented gas tank (custom sweet paint). Someone tried to paint the frame and wheels black. 60cc kit. pretty stock. So far i took the motor out with in the first 10 min. 30min later the bike was stripped. I did alot of research before i bought the bike, so i knew what i was going to run into, broken ignition switch, shock/swing arm bushing worn out, rusted tank, $hity 6VOLT!!!! (AHHHH!!!), ECT.....

So now I'm about to install my 86 XR200 motor (I just did a fresh rebuild AND 12VOLT! YEAH!). Fit it and then get the frame powder coated. Hopefully done in the next week.



Fixed the huge dent in the tank and tomorrow ill (KREEM) it. Ordered a bunch of parts. (fix it crap, bearings/bushings/right spring/seals).



Heres a few pics. Just getting started. more to come soon. Ill keep you posted.

By the way all of the pics are taken with my phone, Sorry...

When i got it.

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30min later!

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#3 ·
Im replacing my left spring/ seals/ o-rings/ dust cap/ clips/ and spacer. just want both sides to be brand new. got the tcr right spring and all seals ect... Also got a ZX10 brembo master cyl. and clutch pertch. I ordered Vortex shorty levers and they are on the way! Sealed head set bearings and tcr shock / swing arm bushings. Xr200 shop book. lastly a run / brake led light.

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#4 ·
IV been looking for rear sets for a LONG time (many hours late at night!) cant find anything. Except mini moto... Was at work today and was thinking..... hummm.... Vortex rearest. So i called my buddy at vortex. They could make a set for me but it would cost a ton and take forever. I said oh well. Then i found a spare set! I have to do some welding on the frame anyways. so im going to move the bottem tab up about an inch or two to make them fit! Ps the rear brake works too. What do ya think?

Test Fit

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Final product

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#17 ·
Get rid of that stock carb on the xr200. It will make it a total dog. Pop on a Mikuni TM28 Flatslide. Also, while you are at it, get the head ported and get some custom ground cams from webcamshaft.com. A stock xr200 doesn't make a lot of power, but it definitely has a lot of potential.



Also, not sure how I feel about the back portion of the cradle that mounts up to the frame with those two flimsly 6mm bolts. You now have a substantially heavier motor in there with a lot more torque. You need to lop that stuff of, weld up some mating plates, and bolt them in there with some grade 8 hardware. I'd hate to see you running down the road with the motor dragging on the ground



Nice innovative build.
 
#18 ·
The motor is just mock up. thats not what im actually running. I have ALL new bolts spacers nuts.... ect. The motor is torn down right now to get a fresh rebuild. I do have plans in the NEAR future to do a big boar kit. There is also a major support on top of the motor that you cant see in pics. Im very confident with the mounts. The carb is gone, just used it of fitment. This bike will be dont to the T just not all at once.
 
#21 ·
No really worried about the heat. (1) i have thermo shield for the bottom of the tank. I wish i was the first to do the swap, but a few other people have done it with no problems. (2) the "R1" plastics suck. Iv seen them in person from a few difrent people who make them. not impressed. In my eyes it a honda. Will be putting NSR/NSf front forks, swingarm and wheels real soon. When im done the only thing on the bike that will be yamaha is the frame and tank.
 
#26 ·
heres the site where i found out about and the (how too) on eletrosis. http://www.650rider.com/Content/pid=6.html



I was considering a few diffrent swaps. Blaster, yz85/80, 250f ect...

Was looking for 1. 12volt 2. Desent power 3. something diffrent (not claiming to be the first) 4. a motor with an aftermarket. Iv got $150 into the motor/swap/rebuild. So far i think im doing well. Went from 5hp(if i was lucky) to 20(ish).



Im working on NSR 3 spokes/swingarm/brakes. Just need my buddy to get his NSF 6 spokes for is zb50.

Stay tuned!