When I took my motor apart this year I've noticed the underside of some of the piston crowns are turning a slight tint of brown. Looks like she might be getting a little warm. I don't know weather to blame the Sunoco fuel but I never had anything like this before with C25. I'm using the same timing and jetting that I was before with C25. I'm not sure weather to put more fuel in it or back down the timing a little. Any advise or tips tuning with the SR18 in the area of jetting and timing would be appreciated... Maybe this is normal
Thanks Jake
Thanks Jake
