1994 900SS CR, 2002 998 Trackbike
I have 11:1 pistons and FCR41 with a TPS (ignitech TCIP4) and have been running like this all summer.
I last looked in there maybe 1000 miles ago, when I dialed in the cam timing to 109° centerlines. I thought my ignition map was on the conservative side with no pinging felt or heard, and the pistons were clean last time.
Guess the more advanced cams have pushed cylinder pressure up enough to cause this? Since the properly dialled cams made the motor way smoother at low RPM, I may have also abused the 2500-3500RPM range a bit too much since then?
Anyway, not sure what to do next. Is this damage concerning enough to warrant opening the engine? Guess the bike should really go on a dyno, but the nearest is 6 hours and a ferry ride away from me. I'm obviously gonna pull a few degrees of timing out of that map.