Re: bummer on "performance" V1 head.

Bitter /
bitter
Jun 03, 2008 09:19AM
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the 70cc head has a little larger volume than the stock head, so you need to take a little off the top of the cylinder accordingly. where it shines is that it has a squish band, when you machine the cylinder so the piston comes up to the band as it should, you'll see the performance come back much better.

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