Superbeemike
Well-Known Member
I recently 4 speed swapped my Super Bee and while doing the conversion, I went with an American Powertrain Hydraulic throwout bearing kit. I went step by step, and dialed everything in according to the instruction. My throw out bearing was set with 0.163" and within the specified range. Pedal and pedal travel all within spec. I have a new Mcleod clutch and flywheel (10.5"), and used a 69' A833 18 spline trans. Bellhousing is an aluminum Lakewood. Note I did not check the runout of the bellhousing when I installed it. It is on stock dowel pins.
Everything installed and running, I drove the car about a mile before the throw out bearing starts making a scraping noise and won't disengage from the pressure plate. I put it up on jack stands. I looked underneath and the throw out is indeed not returning after the pedal is released. I cracked the bleeder and there is no hydraulic pressure present. I cracked open the supply line from the master and again, no unusual pressure present. After the car cools off over night, the throwout bearing is back to normal, at least until I drive it again and it warms up (maybe a couple miles of driving).
I called American Powertrain and they said I need to check the runout on my bellhousing and get that dialed in first. I'm not sure how that can effect the throw out but I will check it regardless. They also said to reverse flush it in case there is debris in the system. I will also be doing that as well.
Problem I have is I'm not sure those suggestions are going to have an effect. Hoping someone here has a suggestion or possibly experience regarding this. I'm kinda stumped.
Thanks,
Mike
Everything installed and running, I drove the car about a mile before the throw out bearing starts making a scraping noise and won't disengage from the pressure plate. I put it up on jack stands. I looked underneath and the throw out is indeed not returning after the pedal is released. I cracked the bleeder and there is no hydraulic pressure present. I cracked open the supply line from the master and again, no unusual pressure present. After the car cools off over night, the throwout bearing is back to normal, at least until I drive it again and it warms up (maybe a couple miles of driving).
I called American Powertrain and they said I need to check the runout on my bellhousing and get that dialed in first. I'm not sure how that can effect the throw out but I will check it regardless. They also said to reverse flush it in case there is debris in the system. I will also be doing that as well.
Problem I have is I'm not sure those suggestions are going to have an effect. Hoping someone here has a suggestion or possibly experience regarding this. I'm kinda stumped.
Thanks,
Mike