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Old 12-22-2011, 12:08 PM
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Skarrd Skarrd is offline
Motorized Bicycle Elite Member
Join Date: Oct 2010
Location: Chandler, AZ
Posts: 495
Default Re: what did you do to your motor bike today?

Originally Posted by rustycase View Post
Skarrd, got a question on your piston cutting...

Did you roll your engine over to TDC, scribe the piston through the open port, and trim a notch into it?

How are the results for you?
any difference in low/top end power?
Has it affected balance/vibration any?
pretty much, i couldn't find something to scribe it with this time. so i just eye balled it, then ground away, and kept checking it to see how much more i needed to take off.

it pretty much increased power overall, mostly bottom end and top end, mid was left about the same.

didn't notice any change in vibration at all.

i know i need to check the piston clearence on the top at tdc to see if i need to mill the top of the clyinder body at all for the new head i bought.

bike so far is topping out at 35mph-ish. needs some more tuning and adjusting before it'll get back to the 40mph range.
They see me rollin'
they hatin'

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Traditional bicycle riders think we're cheaters. Non riders think our bikes are toys. Bicycle shops think we're a threat. Tree huggers think we're polluters. The police don't know what to think.
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