"Denny" wrote:

Dan, either we are miscommunicating or there is confusion...
At full throttle you cut in an extra X% of fuel flow, beyond 'max
rich'... It is for cooling the exhaust valves at take-off power...
Pull the throttle back, even a small amount, from full forward and you
lose that extra X% of cooling... It is the same for carburetor and
injected engines...
The RPM at which you can run full throttle continuously is in the
POH... Reduce power in climb by reducing the prop to that RPM and leave
the throttle full forward and your engine will be a happy camper with
cool valves...

That's what I'm saying. It really has nothing to do with the RPM setting.
In fact, the higher the RPM, the higher the horsepower and the higher the
CHT.

--
Dan
C-172RG at BFM