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Honda MX & Off-Road Dirt Bikes
1984 CR500 combustion characteristics?
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[QUOTE="David Trustrum, post: 155261, member: 21529"] Well Eric or Rich may add some subtlety but the design flaw was to make an inefficient cylinder size. 125cc seems to be pretty close to optimum for real world engines. Gas flow control & combustion are pretty haphazard in such a large cylinder. There are some things you can do to help things along such as a twin sparkplug conversion or machining the squish band to lower the MSV in the part of the engine that will tend to detonate & try to condense combustion into a favourable area. Anti detonation inserts. Best go see someone who has built a whole bunch of desert racing motors. [/QUOTE]
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Honda MX & Off-Road Dirt Bikes
1984 CR500 combustion characteristics?
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