In my mm RB6 I ran 34/69 with 50* timing. After the 10 minute main (finished 2nd by the way) my motor temped around 120ish. Didn't even break a sweat. For 8 minutes though I followed my buddy's b5m with Protek's new slingshot motor. My car was clearly faster but he was driving perfectly to close off any lines. When he finally made a mistake, I was gone.... After the race, his motor was well over 200 degrees and definitely faded at the end. Going to bump up the timing on the D4 and go after the leader! (Who also runs the D4.)
Very happy with the motor and glad I upgraded from the Killshot.