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99-12 engnie and frame fit

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Hey, just wanted to pass some info that may be old but I have not seen...

I bought an 05 yz250 basket case. and a 2000 engine. I knew that I would have to swap out the swing arm eng case bushings, which most know. BUT in those threads I did not see anyone mention having to machine the 05 bushings to fit in the 2000 cases... should be no big deal, but everybody made it sound plug and play...

I'll post some pics as I get some stuff done....

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The pivot dia changed in 02, there has been speculation that 02+ bushings will fit 99-01 cases. Most just bore the bushings.

If the 02+ bushings dont fit I would bore the cases to match.

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If the 02+ bushings dont fit I would bore the cases to match

That's probably the best solution since it would effectively turn the cases into '02+ cases.

If you have access to a heavy duty drill press or a milling machine a reamer would do a quality job.

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