Originally posted by InitialD
Ok, ever since I took the grub screws out of the flyweights and ran it just with them mounted in between the pins, I run about 1.5 mm pre-tension and 0.5 mm clutch gap instead of 2 mm clutch gap with the grub screws. Never had a problem with bearing at either setting.
Perhaps with 2 mm pre-tension, your clutch is slipping a lot? Which would explain the temp increase...
InitialD: What grub screws? What did I miss? I'm still running with the same type of fly-weights we cut down when all this was new. Have never had a problem with 6 different engines.