Today I did my first flight after a major IRAN. All 4 cylinders were replaced. It all seemed to run normally and smoothly. One thing that surprised me, though. I was expecting to have MUCH hotter CHTs. I kept the power up to about 90% for most of the flight, MAP about 26, and my CHTs never got above about 375. My front CHTs were actually down around 320 for a while - after about an hour running at about 85% power my CHTs were 358,336,379,378. EGTs were typically in the 1150-1350 range, depending on how much i leaned (I didn't lean at all for the first hour). Oil temp consistently about 185.
Are these low CHTs during break-in a cause for concern?
Are these low CHTs during break-in a cause for concern?