> Keith, sounds like you are running your engine too rich at cruise.

Tracy found he can lean to about 100 degrees lean of peak and the EGT
will drop down to 1450 degrees F or so. You should also benefit greatly
in terms of fuel flow and MPG. Not to mention lower stress on the
exhaust system. 321 SS is in a steep strength slide at 1700 degrees F.
Tracy feels the reason for the rotaries  ability to run lean is a
outgrowth of the rotating combustion that provides a radial stratified
charge.

Paul Lamar

Keith, I agree with Paul.  At economy cruise my EGT is around 1450-1500F.
Only when full throttle do I get up to 1650F.  My thermocouples are 8" from
my exhaust port.

Ed Anderson
RV-6A N494BW 185 Hours

 
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