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Old 01-25-2011, 09:38 AM   #55
akarob
Green Cantern
 
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Joined: Apr 2009
Location: Skuncasville, CT
Oddometer: 7,333
From someone who's done a few XR rebuilds, I recommend the following:

A new timing chain. They're 100 bucks, but it'll keep the top end tight for a long time to come.

New valves and springs, preferably stainless valves. Also have the seats recut. Your valves may clean up ok and be ok for a while, but they wear out. They will start creeping up into the head and you'll need a valve job. It's much better to get them freshened up now and be able to trust that engine for a long time to come.

Countershaft? That front sprocket play does not look good. As said, look at the splines for damage. If you find wear, you need a new shaft. Splitting the cases is required for that. Luckily, it's not that bad at all. I even made videos on it.

Good luck with the rebuild. With new valves, timing chain, piston and rings - that bike will be like brand new.
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