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Old 12-10-2009, 08:19 AM
Riding Rich Riding Rich is offline
Join Date: Aug 2009
Location: pa
Posts: 349
Default Re: Do slant heads really make a difference in power?

Well that is interesting.

I got 66/80cc Jet Silver Limited Edition Bicycle Engine.
From Pirate Cycles.

Maybe it's something to do with the limited Edition.

The piston has #5 and arrow on it.
I also notice the fins on the head are rounded more.


What is the Displacement listed on the Emmisions sticker ?
The PK80-J is 68.5cc.

If you have a flat top piston i would get rid of the head gaskets.
Use the thinnest aluminum you can find to make a new one.
Attached Images
File Type: jpg dome piston.JPG (272.9 KB, 143 views)
File Type: jpg head.JPG (273.5 KB, 112 views)
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