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Old 06-21-2008, 03:14 AM
RLorange RLorange is offline
Motorized Bicycle Elite Member
Join Date: Jun 2008
Location: Australia
Posts: 127
Smile Re: New Cylinder is taller; ports bigger

LOL, Pretty bad luck with the bubble-casting I reckon. My supplier does have a 3 month waranty but the leak only started after 8 months of hammering my engine daily.

A bloke in Australia took the cylinder onto a metal lathe and shaved 3mm off the head increasing compression BIG TIME. Unfortunately combined with a expansion chamber muffler he blew one of the head bolts stripping it out off the engine block !!!

He said the compression was boosted so much that it barely ticked over even pedaling fast!

3mm might be too much...
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