I have installed a Centerforce Dual Friction Clutch DF611679 along with a Fidanza Aluminum Flywheel 186551 on my 05 GT in preparation for my supercharger upgrade.

The clutch was properly broken in for the first 500 miles and shifts properly in normal driving. The pedal height feels close to stock and the effort is about 15% higher than normal as expected.

THe clutch and flywheel were installed at my Ford dealer by their transmission specialist who has nearly 30 years experience.

The problem I'm encountering is that when I'm speed shifting at or near redline I can't find the next gear. It won't grind but it just hangs up.

A few people have mentioned that they have shimmed the throwout bearing with a 0.150 or 0.200 shim and the problem went away.

I also spoke with centerforce who suggested that if there was any air trapped in the throwout bearing the same result would occur.

Their suggested method of bleeding the clutch is before mating the transmission to the engine someone stick their hand in there and push in on the throwout bearing while someone bleeds it at the bleeder.

I am looking for anyone who either has a spare shim to sell me or has a dimensional drawing so I can have one made and installed before next weekend.

Any help would be appreciated.

Thanks,

Peter

 

So there is a bleeder valve inside the housing? That would be the best way to bleed it I think.