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Old 10-22-2008, 07:38 PM
Bikeguy Joe Bikeguy Joe is offline
Godfather of Motorized Bicycles
Join Date: Jan 2008
Location: up north now
Posts: 11,531
Default Re: Hello and what is upgraded Japanese bearings can ask that specific question about your engines bearing type to powerking. They would know for sure.
Some engines have bushings in the wristpin, some have needle bearings.
All of the bottom ends (as far as I know) are rollers.
There is a teardown thread with photos around hear somewhere (classic posts)...
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