I remember a friend of mine who used to race go carts telling me about the hopped up Briggs&Stratton engines running on alcohol. I think they dynoed at 18 HP. He said he could put his hand on the cylinder head and it would not burn, but the exhaust would burn him badly. Funny how the heat from combustion was concentrated in the exhaust.
One reason why you can get so much more power out of most engines wit ha significant amount of alcohol for fuel.
regards
Mech
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