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Old 08-16-2010, 04:22 PM
Nougat Nougat is offline
Motorized Bicycle Elite Member
Join Date: Nov 2009
Location: Montgomery, IL
Posts: 1,332
Default Re: waiting on my engine

More info about the 66/80 split measurement --

US measurement is bore x stroke, the end. East Asia measurement is bore x stroke plus the volume of space inside the head when the piston is at TDC.
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