clutch ?? issue need help
clutch ?? issue need help Help me figure out whats happening on road-race track (enduro type environment):
I have a high HP (>500 engine HP) LSx in a 93 RX7-FD, with fidanza iron flywheel and stock Z06 clutch disc/plate, running to T56 6-speed tranny that's been beefed up. Tilton style separate master cylinder to the factory stock slave throwout bearing.
When I run hot, really aggressive shifting using 4-5th gears, clutch seems to engage when my foot is nowhere near the pedal. When I'm really into the horsepower on the straights, engine revs but disconnects from the tranny (My foot is OFF the clutch). I smell clutch material, and clutch pedal gets very hard, but does not go to the floor, I cannot shift any gears. When this happens, I put the car in neutral and coast/limp until ?cools off?, then I'm back to normal for another lap, then it happens again.
I sense that its "temperature" related, because the more aggressively I drive on the track, the more this happens. No problems driving on the street, clutch does not slip normally at all.
This happens when I am NOT pushing on the clutch pedal. I do not ride the clutch.
Initially, I thought it was the fluid boiling, but clutch pedal never goes to the floor. I tried Bleeding the clutch several times with new fluid and rerouted the line so its nowhere near the headers, and still its happening.
Need ideas.
I have a high HP (>500 engine HP) LSx in a 93 RX7-FD, with fidanza iron flywheel and stock Z06 clutch disc/plate, running to T56 6-speed tranny that's been beefed up. Tilton style separate master cylinder to the factory stock slave throwout bearing.
When I run hot, really aggressive shifting using 4-5th gears, clutch seems to engage when my foot is nowhere near the pedal. When I'm really into the horsepower on the straights, engine revs but disconnects from the tranny (My foot is OFF the clutch). I smell clutch material, and clutch pedal gets very hard, but does not go to the floor, I cannot shift any gears. When this happens, I put the car in neutral and coast/limp until ?cools off?, then I'm back to normal for another lap, then it happens again.
I sense that its "temperature" related, because the more aggressively I drive on the track, the more this happens. No problems driving on the street, clutch does not slip normally at all.
This happens when I am NOT pushing on the clutch pedal. I do not ride the clutch.
Initially, I thought it was the fluid boiling, but clutch pedal never goes to the floor. I tried Bleeding the clutch several times with new fluid and rerouted the line so its nowhere near the headers, and still its happening.
Need ideas.
