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Old 01-09-2011, 03:01 PM
wayne z's Avatar
wayne z wayne z is offline
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Join Date: Dec 2010
Location: louisiana
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Default Re: what did you do to your motor bike today?

Originally Posted by breno View Post
I'd be interested to know what the head and zorst temps are in the those temperatures..
EGT actualy goes up significantly in colder weather. The cold dense air causes a leaner mixture because the molecules are much closer and more air is actualy entering the cylinder on each stroke.

In the ultralight community, they run their engines rather lean, monitored with guages, to avoid rings coking up and sticking.
Some of them have to richen their mixuire in cold weather to keep the temps below max allowed.

If your mixture is on the verge of too lean in warm weather, you could easily sieze the engine in cold weather.
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