Lvlflyer,
Try some compressed air to blast out any crud stuck in the cooler fins. That has always helped drop the temps for me. You should also enrich the mixture when you need a higher power setting for longer periods of time (extended hovering, climbing, or slow orbit). In cooler temps, you will be primarily limited by EGT. At higher temps / DA, CHT and oil will be your limiting factors. On 100° days in Colorado pushing 10,000' DA, I'll be as rich as 1400-1450 TIT. That's below the optimum power range for the engine, and you're further limited by reduced aerodynamic performance from higher DA, but necessary to be kind to the engine. Performance drops off sharply with rising density altitude...
-JMc
Last edited by CO280fx; 4th June 2014 at 20:03.
Reason: cell phone typos