Re: Bought bottom end from Boy Go Fast, should I be worried?
More stroke more torque and slightly more displacement.
So no 38mm stroke is not better.
By Hybrid I think MAP is referring to rod length.
I'd have got the MBR 40mm stroke motor myself.
But depends what you expect,
I want at least twice the standard HP, and 9000 RPM revs.
can be done with a 38mm stroke, but better off starting with the better bottom end.
If you just want a standard 2 1/2? HP motor, it'll be fine.
Last edited by Theon; 04-24-2014 at 02:27 AM.