I've seen exhaust port temperatures in the neighborhood of 2000 degrees F. on dyno runs of race engines at full throttle. The headers were translucent enough we could flames dancing arouind inside the pipes!
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!