RCU Forums - How to size a US engine?????

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rcman3

03-21-2003 06:57 PM

How to size a US engine?????

I got this US engine about a year and a half ago and have forgotten the size. Is there an easy way to figure out if it is a 25cc, 35cc or a 41cc? Thanks, Patrick

GPaloz

03-22-2003 10:34 AM

How to size a US engine?????

I would measure the bore thru the exhaust port. 1 9/16th's =41, 1 7/16th's=35, smaller than these=25. Regards G.

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