Yamaha DT 125R 1994 project
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Yeah... But it was like month after burnout. The engine has always made weird side noise. But it would really been sad if it happened during next summer. The bearing would failed. Also the needle bearing is totally worn and piston rings. Remember to clean your air filter!
But now plans for the project:
-Fix rust and paint some parts.
-Clean aluminium parts.
-Fix engine
-Replace worn parts.
-Sticker kit or wrap for plastic parts.
-Possible some tuning parts.
I´m open for suggestions!
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wrote on 10 Nov 2020, 10:34 last edited by
I know that the crankshaft bearing failed. But there could be something else like a bearing.
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I know that the crankshaft bearing failed. But there could be something else like a bearing.
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@jonne123 Yes, but WHY did the crank bearing fail?
There is no point in rebuilding it if you don't understand why it failed.
wrote on 10 Nov 2020, 12:24 last edited by SpookDog 11 Oct 2020, 12:30 -
wrote on 11 Nov 2020, 16:29 last edited by
Yeah the previous owner said it had engine rebuild but im guessing he meant top end because the engine bolts were so stuck and the engine was so dirty. Going to buy wössner piston and connecting rod. Good main bearings and seal.
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Yeah the previous owner said it had engine rebuild but im guessing he meant top end because the engine bolts were so stuck and the engine was so dirty. Going to buy wössner piston and connecting rod. Good main bearings and seal.
wrote on 11 Nov 2020, 18:12 last edited by@jonne123
Wossner and forged pistons are good, but you need to get the clearance right to allow for expansion. I understand buying the best you can, but is it really necessary? If you’re rolling in ca$h ignore me!
Just don’t fall into the trap of thinking expensive is best... -
wrote on 11 Nov 2020, 18:58 last edited by
The cylinder is going to shop. And price isnt that bad and prox quality has sometimes up and downs. And i suppose they are better because they are made with strong material and theyre forged. The ktm guys here use wössner pistons. And i know that i need to let the engine warm really well and also idle after ride.
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wrote on 25 Nov 2020, 18:19 last edited by
So the crankshaft bearing missed half of the needles. Also the main bearings had slack. So the engine wasnt rebuild recently as the owner said.
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wrote on 25 Nov 2020, 20:18 last edited by
The big end bearing you mean?
People probably overlook that as it's not something you can easily do at home as the crank needs balancing afterwards!
Pity. The Yamaha Con Rod kids don't come with the shaft either, so if you've nackered up the eye then you'd be looking at getting another crank.
Was it salvageable do you know?
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wrote on 27 Nov 2020, 17:04 last edited by
I will buy connecting rod kit had bring them to local machine shop. They will put it together and balance.
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I will buy connecting rod kit had bring them to local machine shop. They will put it together and balance.
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wrote on 28 Nov 2020, 11:00 last edited by
I figured if im going to rebuild the engine that i just put quality parts.
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