REFLECTOR: Franklin CHTs

[John Dibble]

I'd like some opinions on CHTs.  I want to install blowers in my armpit scoops to
provide cooling during taxi.  I mounted one and went flying to see how much it
affected cooling during cruise when the blower is not running.  The front and middle
cylinders (#s 2, 4) ran 10 C / 20 F above normal and the back cylinder (# 6) ran 20 C
/ 40 F higher.  My cruise temps are normally 110-130 C / 230-266 F.  My manual lists
the CHT operating limit as 199 C / 390 F, so it appears that increasing the CHT should
not be a problem.  Is there an "ideal" CHT, or is lower always better?

John