Quote:
Originally Posted by serialk11r
If you want to "be safe" then I don't think 16:1 is what you want. The risk of running lean is that the peak combustion temperature (not EGT) is higher when you're running slightly leaner than stoichiometric, which can damage the piston. Not saying that on a naturally aspirated engine it will necessarily but 17:1 is probably more safe.
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I was under the assumption that stoich is also peak combustion temperature. Leaner mixtures will burn cooler but because it takes longer to burn, more heat is transfered to the piston, valves, head, etc.
I don't see how a more lean mixture would be more safe?