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Nice project! The crankcase damage in this engine occured because the owner didnt pay that much attention to the condition of the chain and sprockets, I recommend you changing the drivetrain from 428 to 520 for better strenght(just look for DT200R chain and sprockets, everything will fit bolt-on) and also use the chain lower guide(new avaible to buy cheap at yamaha dealer) in good condition, if you do that there will be no more problems with chain causing damage to the crankcases.
I raced the guy on that DT200R in 2016, it was only amateur cross-country type of championship but the WR200 turned out to be superior to DT :face_with_stuck-out_tongue: , 2 years later he sold me the bike.
Heres a pic of that DT, looked better than when i got her.
wrote on 23 Oct 2019, 19:30 last edited by@Challenger thanks for sharing buddy cracking picture, I would image yes maybe the case was damaged because of the chain and sprocket buyer didn’t specify why, could be a number of ways,
I’m unsure what chain size and sprocket size to use yet need to some research after I’ve rebuilt the engine and fitted it to the frame, Id prefer to get it to this stage before I start planning how to engineer the bike
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@Challenger the dt is already having a lot of it’s power sapped a bigger chain is way overkill
wrote on 23 Oct 2019, 19:31 last edited by@declan positive and negatives in either way I suppose buddy
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wrote on 23 Oct 2019, 19:34 last edited by
I’ve ordered and new workshop so planning that at the moment which is why there has not been much attention to the dt, also rebuilding my 1980 rm 80 engine, which I need to metal spray the crank as the bearing is to slack on one side of the crank wouldn’t want it spinning one bearing that’s for sure,
Just for fun anyone want share a picture of there workshops/ garage ?
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wrote on 23 Oct 2019, 19:52 last edited by
I also planning on doing restoration services for bikes, any model any part any type of restoration from nuts and bolts to full bike rebuilt anything you like what I’ve done on my build I can do, so if that’s somthing that Interests you guys let me know
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wrote on 27 Oct 2019, 15:01 last edited by mhbikesnbits
engine back from the Powder coaters, happy with the results looking forward to rebuilding it up, just got to mill the writing on the custom ypvs cover as masking it wouldn’t look right
I also need to spray the plastic covers because these can’t be powder coated
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wrote on 27 Oct 2019, 17:53 last edited by
Wow, that really looks pucker.
I was always too scared to get my engines powdercoated.
The results look grand though.
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Wow, that really looks pucker.
I was always too scared to get my engines powdercoated.
The results look grand though.
wrote on 27 Oct 2019, 18:16 last edited by@Calum cheers it’s a first time for me to be honest, I’m quite impressed with the results just see how it holds up to the road once the bike complete I guess
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wrote on 10 Nov 2019, 20:22 last edited by
I cant belive how fantastic all this is looking i really hope mine looks as good at this once its done.
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I cant belive how fantastic all this is looking i really hope mine looks as good at this once its done.
wrote on 11 Nov 2019, 19:26 last edited by@Walney-Reptiles thanks for your kind words quite abit to do yet till it’s done, but I really like your project too think your doing a amazing job
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@Walney-Reptiles thanks for your kind words quite abit to do yet till it’s done, but I really like your project too think your doing a amazing job
wrote on 11 Nov 2019, 22:19 last edited by@mhbikesnbits Your welcome mate, and thanks very much
what time next year do you think you will have finished, i reckon by april next year mine should be completed -
wrote on 1 Jan 2020, 18:58 last edited by
Happy new everyone and all the best to all!
not had chance do any work on my dt recently unfortunately but hopefully this is the year to get things done on a plus just found this what I think would look ace on the project
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wrote on 7 Apr 2022, 19:49 last edited by
Well been a while since I’ve posted on this article, i just want to say the project is alive and well I’m making some progression finally. I blame a pregnancy and a pandemic for the delay
Forget how I post picture on here will update some soon
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Well been a while since I’ve posted on this article, i just want to say the project is alive and well I’m making some progression finally. I blame a pregnancy and a pandemic for the delay
Forget how I post picture on here will update some soon
wrote on 8 Apr 2022, 11:57 last edited by@mhbikesnbits
Sweet, I’ve not seen your project before. Some really nice attention to details
Please, keep on keeping on
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Well been a while since I’ve posted on this article, i just want to say the project is alive and well I’m making some progression finally. I blame a pregnancy and a pandemic for the delay
Forget how I post picture on here will update some soon
wrote on 8 Apr 2022, 13:46 last edited by@mhbikesnbits Yes wow blast from the past. Hard to think your last post was pre-pandemic. It's hard to even remember what life was like back then
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@mhbikesnbits
Sweet, I’ve not seen your project before. Some really nice attention to details
Please, keep on keeping on ...wrote on 8 Apr 2022, 21:19 last edited by@SpookDog tar buddy Hopefully a lot more of it come
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@mhbikesnbits Yes wow blast from the past. Hard to think your last post was pre-pandemic. It's hard to even remember what life was like back then
wrote on 8 Apr 2022, 21:22 last edited by@Calum I know I’ve really been slacking I got everything back out the other day to carry on with it had to refresh my mind of what’s, what
it’s not so bad when you first do it but 2 years later and you’ve not really looked at it you forget things -
wrote on 8 Apr 2022, 23:15 last edited by mhbikesnbits 4 Sept 2022, 14:58
Update 2022
I’ve dug everything back out and got my head back around the project. The excitement to build the bike is Back but have a while to go yet. I started out by tapping out the holes on the parts that had been powder coated.
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wrote on 9 Apr 2022, 14:15 last edited by mhbikesnbits 4 Sept 2022, 15:16This post is deleted!
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wrote on 9 Apr 2022, 14:17 last edited by mhbikesnbits 4 Sept 2022, 15:24
Needed to get the engine rebuild under way so I can install the engine onto the frame of the bike to get some weight behind the project.
One of the only issues with the engine components other than the the usual wear on the bearings and seals was the play on the clutch basket.
So I did some research and found out you could redo the rubber bushes in the basket with RD250 bushes and rivets.
they sold them on yambits so I got the good old grinder on the old rivets flatten them with a sanding wheel and knocked them through
installed the new bushes and put it back together the play in the basket was like it would be straight out the factory.
Apologies but I must have forgot to take a picture of the finished basket.
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wrote on 9 Apr 2022, 14:32 last edited by mhbikesnbits 4 Sept 2022, 15:48
Had a little play with frame and put on a couple of bits, pressed in the races for the tapered roller bearings for the steering stem.
Love how the black contrasts with the red.
Also placed some bolts for the engine in position ready for the engine.
