Re: porting stock jug

Brian /
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Widen the exhaust slightly and raise it about 1 mm, not too much. Also cxheck to see if the piston skirt is clearing the intake port all the way, shave piston enough to clear and slightly widen the intake port. When you match the intake make sure to only do it where the intake bolts on the cylinder, not in the cylinder wall where the intake port is.

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