dabeechman
05-06-2012, 07:31 PM
Do you mean 65.5? Because you sure as heck can't bore a stock cylinder out to 85.5mm.
Besides, an 85.5mm bore on a stock stroke would still be 620ccs.
A 65.5mm bore on a 10mm stroke would be 431cc's.
So does this motor have a 10mm crank in it?
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