We have come to appreciate that keeping CHTs under about 380dF has very positive effects on longevity. In the climb, if CHTs get above 350-360, it is a good indication that you could use more fuel flow. Take off EGTs at sea level in the 1275-1300dF range will result in much lower CHTs than most of you are reporting. This may require re-jetting the carburetor or turning up the umetered pressure on injected set-ups.
Walter Atkinson
Advanced Pilot Seminars
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