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High Performance Bicycle Engine Tips We all want our bicycle engines to push our bikes faster. Get exclusive engine modification tips and suggestions from us.

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  #1  
Old 10-12-2009, 10:44 PM
hamrhed42 hamrhed42 is offline
Motorized Bicycle Newbie
 
Join Date: Oct 2009
Location: hawaii
Posts: 1
Default porting help

looking for the/a post on the porting i can gasket match no broblem but what about the piston clearances and the ports in the jug i seen rase one and lower the other but i cant find the post after searching
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Old 10-13-2009, 01:59 AM
stv1jzgte stv1jzgte is offline
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Join Date: Feb 2009
Location: australia
Posts: 490
Default Re: porting help

From my personal experience i wont be changing the port timing again only opening up the port lengthways only. I raised the Exhaust and lowered the intake ports about 2 mm each.

Down low it was a dog even with a 44tooth but once it started reving and reving it went faster than std but not worth the loss of low down torque. It you find a way to make more down low power let me know.
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