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quaddad

yz426 base gasket leaking oil

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have a yz426 motor bored 2mm over, 13.5 to 1 je piston, ported head, hot cams auto decompression cam. this motor is in a quad frame. the base gasket looks like it has squeexed out and is now leaking oil . what could have caused this. the motor has good compression and runs great.

Mark

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