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Old 06-10-2010, 05:09 PM   #74
BRUTAL64BRUTAL64 is offline
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Quote:
Originally Posted by Vettezuki View Post
Piston tops have to be fly cut for the much larger valves in the new heads. Removing material from pistons means re-balancing internals in Vettezuki's book. While the motor is fully apart, replacing slightly worn bearings is in Ron's book.
With old bearings the "crush" may not be as it should.
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