Originally Posted by
desertbird
Yeah, next race I'm not going to twist the screws if smoke is good and performance rocks, but temps seem low. My lowest temp was 186, and am concerned that the cooler temp is not good for conrod life. But I also hear this is a cool running motor, so I should probably not try to fix what ain't broke, but I am learning.
Desertbird - Run the motor anywhere between 175-195. As someone already pointed out they have a massive cooling head. Anything too much hotter than that and its too much IMO...
I also run the GRP at the Pit and I always try and run it around 180.
You may want to try the GRP 5 again or try a ODonnell 97T.