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Old 05-26-2012, 09:56 PM
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maurtis maurtis is offline
Motorized Bicycle Elite Member
Join Date: Dec 2011
Location: Kyle, TX
Posts: 707
Default Re: BGF engine questions

Originally Posted by multipaul View Post
Push a kind of ruler without sharp edges into the exhaust. Less than 70mm should be a <50cc engine.

I hope that helps.

That is a fantastic tip!
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