[e90pilot]

Not sure if this is the right section but I was on the track when problems struck. I've tracked my car at both Thunder Hill and Laguna Seca with no engine issues before today. Coming around turn 2 my car would not rev past 5000 rpm and would go fast enough for 4th gear on the back straight. I thought it might be over heating, but the coolant temp read never went past 102C. When it got there it almost imediately went back to 90C. I have no clue what my oil temp was but the cylinder head temp was about 250 right after I came in (I used a heat gun). I also checked the radiator temps and they agree with what the sensor was saying. There is a lot of coolant leaking from the reservoir cap. A ton overflowed when I opened it after it has sat for an hour. The coolent was warm but not hot. In subsequent sessions the problem went away but came back towards the end of the session. The only thing I can think of is the broken PCV line behind the head. May be in the turns, it get dislodged. That would cause a loss in power for sure. Any ideas?

[e90pilot]

Hmmm... The car sat all day today and there was still a little pressure in the expansion tank. Also the coolant level was at minimum. It's sounding like a blown head gasket.