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poffer

wr reliability with yz timing

5 posts in this topic

Just wondering if my wr engine will last shorter if I change the stock exhaust cam to the on from a yz450f and how reliability would be???

Have heard some that had blown engine on high rpm (piston meets valves)...?

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as long as proper shims are used, reliability shouldn't change.

A lighter flywheel might work too instead of YZ cams.

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as long as proper shims are used, reliability shouldn't change.

A lighter flywheel might work too instead of YZ cams.

What do you meen about proper shims??

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Have heard some that had blown engine on high rpm (piston meets valves)...?

Sounds to me like somebody didn't get the correct timing set on the YZ cam.

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reliability will remain exactly the same. and no you don't need a lighter flywheel!

What do you meen about proper shims??

as in you have to adjust the valves when you change the cam.

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