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Old 08-10-2016, 06:44 AM
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Tyler6357 Tyler6357 is offline
Motorized Bicycle Elite Member
Join Date: Mar 2012
Location: Santa Barbara, CA
Posts: 611
Default Re: Hello from California

Yes, I think the 40mm stroke is more desireable, also, he talks about the top of the piston coming up to the very top of the cylinder which decreases the squish gap (ignition zone). A smaller squish gap creates a more powerful explosion and more power. This, I think, makes the PK80s better, however, this is just my opinion, others might respectfully disagree with me.

Last edited by Tyler6357; 08-10-2016 at 06:52 AM.
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