It seems in cruise that if I close my cowl flaps all the way my CHT and oil temp start creeping up towards red line. I don't have a real engine monitor, just a single probe CHT and oil temp (and EGT in Celcius, WTF?) So I leave the cowl flaps in trail all the time. The baffling looks good, I'm just not sure if I can trust the gauges. I've got electronic FF and I usually run at either 2500RPM and WOT or 2500RPM and 24" depending on how high I am. I was told to aim for 10gph on FF so I do. I've played around with it and it doesn't seem that changing the FF changes the engine temps any noticeable amount.
Any advice?
Thanks,
Dave (1981 M20J)