head heat?

I broached that problem in another thread, on fitting a toriodial cut head the temperature tended to increase.

Once the motor warmed up it acted somewhat rich at 1/2 to 3/4 throttle but cleared up at WOT.

Gonna have to run a few more tests.
 
Is there any way we could test it? Hook up temp gauges somewhere on the head and run for a certain amount of time?

Or a infared temp gun? except that wouldnt give us accurate being as it could hit anywhere on the head