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Old 12-11-2009, 07:16 AM
xlite xlite is offline
Motorized Bicycle Elite Member
Join Date: Jun 2009
Location: ny,ny
Posts: 736
Default Re: Do slant heads really make a difference in power?

That paper label is on all the motors I got from Zoom... even the 50cc. Why they would put a 80cc label on 50cc bike is beyond me. The other way around is much better.

last year they were riveting 67cc metal tags to all the bikes. It was a pain to drill them out and fill the holes. I guess the paper ones are an improvement over that.

I'd really like to get a handle on this dome vs flat piston issue. Is it random or is there any way to guarantee one type. Maybe email Zoom.

I also wonder if you can see the 2 or the 5 or make out the shape through the plug hole. Taking engines completely apart loses it's appeal after the first 5 or 10.
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