Approximately 1500 degrees is the "ballpark" value assuming the probes are
placed in the standard location - about 4 inches from the exhaust flange.
Further away could yield cooler temperatures. Electronic ignitions
and "fine wire" plugs each can also reduce EGT temps and, as I have both, I
generally see peak EGTs of about 1400-1410. At best power below 80% I
generally operate near 1290-1310.
Scott Krueger
AKA Grayhawk
Lancair N92EX IO320 SB 89/96
Aurora, IL (KARR)
Fair
and Balanced Opinions at No Charge!
There is an oxymoron in that,
somewhere...