Piston

canalcat

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Joined
Jan 12, 2015
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How do I find out the size of my piston measuring the top of it ? I believe it's 66 cc's . No markings on the engine any Senior help!!
 
You got it, best to measure it twice, once in line with the wrist pins and then across the wrist pins and take the average. But it will be someplace close to 47mm.
 
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