Joined: Jul 2007
Location: Dallas/Fort Worth
2007 Mustang - Roush P51 clutch High Mileage
About 8 months ago my stock clutch began to slip. I changed out the factory piece for a Roush P51 clutch. New Ford Pressure Plate, resurfaced flywheel. After about 6 months I began to notice the clutch would not disengage completely and getting the car into gear at a dead stop. As the summer came along it only got worse. When the car and clutch is cold the problem is non existent. After about 4-5 minutes of driving the problem comes back. I've read on other forums other P51 clutch users are having the exact same issue as well.
One of the theories is the stock pressure plate fingers are bending and unable to disengage the P51 disk once it heats up. Users have tried switching slave cylinders, changing the clutch line to braided. Most of the users who pull the P51 seem to all complain that the flywheel is gouged and that the throwout bearing is destroyed.
I'm pulling the clutch out next week and switching to McLeod RST. Wish me luck!