Thread: Getting more power out of a 307
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07-13-2009 05:36 PM #14
Does anyone know the stock compression ratio of the 307 with the stock heads? Or atleast the specs on the stock pistons? I want to do some math to find the compression ratio with the smaller 58cc or 53cc heads. Thanks.





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I'm happy to see it back up, sure hope it lasts.
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