In article ,
Richard wrote:

Not bein' a pilot (I just jump out of them), doesn't lean cause an EGT
rise? Isn't there some risk of overheating a valve or somesuch if you
take it too lean?

You are describing 'not lean enough' aka rich of peak temps, or at
peak temps. Lean the mixture some more and things get cooler.

John
--
John Clear - http://www.clear-prop.org/