I heard 75% or below And not more than 50 degrees lean. Gil Geisz    
---- Chris Zavatson <chris_zavatson@yahoo.com> wrote:
> Question for the engine experts on the list.
 What is the power level below which running even at peak EGT cannot do any harm to the engine? Say less than 65% or 21" MP or something else.  There must be some dividing line between idle and full power.

Chris Zavatson
N91CZ
360std
www.N91CZ.com