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Old 10-06-2013, 06:46 PM
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maniac57 maniac57 is offline
Old, Fat, and still faster than you
Join Date: Oct 2011
Location: memphis Tn
Posts: 4,486
Default Re: How durable are these engines?? 66cc

I sold a bike recently with well over 10k miles on a stock chinagirl with a tuned pipe and a 36 tooth sprocket.
It still gets ridden every day and is doing fine.
It's all about how you take care of stuff. If it runs more than a week, it can easily last years.
Most problems seem to crop up fairly soon. If you tune it a bit rich and keep the rpm's below 8k, they just keep on running.
If more is better, then too much is just enough.
If you can't afford it, build it yourself.
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