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Kawasaki MX & Off-Road Dirt Bikes
2T Engine experts -> your opinions on top end rebuilds
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[QUOTE="DieselTech, post: 1223305, member: 74999"] True, but mainly due to high rpm and valve/seat/spring materials. I would be interested in knowing what the rule of thumb is for 4T valve wear without teardown - by that, I mean judging valve seat wear based on shim size, so that if you are checking valve clearances you can have an idea of when the valves are in need of replacement just by the size of the shim installed. My 15 year old and I just did the first valve adjustment on his '05 KXF250 - it has almost 30 hours on it, and only 1 exhaust valve was out of spec, the rest were still in spec, though right at the lower limit. We adjusted all of them to be at the upper limit (.009" exh/.006" int). Anyone care to provide some guidance on that issue? Keep in mind that he's a beginner, so he's not hitting the rev limiter all the time, hence the minimal adjustment at almost 30 hours. An expert rider would probably experience more valve wear than what we have seen on this bike. [/QUOTE]
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Dirt Bike Discussions By Brand
Kawasaki MX & Off-Road Dirt Bikes
2T Engine experts -> your opinions on top end rebuilds
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