Back passenger brake dragging (Turbocoupe setup on 92GT)

Rich Gill

Founding Member
May 13, 2001
179
0
0
west palm beach
Little background

Setup: 8.8 rear with 31 spline strange axles + 31 spline cobra diff + 9" "style" housing ends, north cobra rear brackets, turbocoupe calipers and rotors

I was driving my car and all of a sudden I lost my brake pedal, I pull over to find that the bolts backed out of my rear caliper which allowed the caliper to come off the bracket and throw the pads off, the piston got pushed all the way out...
I went to the store, got new bolts and found the pads and put it back together.

Ever since then I have had a moaning sound in the rearend.

I blew up the motor so I never got a chance to work on it , I put a new motor in and took it for a short drive, noise is still there..

So I replaced
Caliper + bracket, rotor, rear brake line.
I took the north cobra bracket and machined the mounting surface to be sure the two mounting surfaces were parallel.


I took it for a long drive today, the car makes the noise but the two main things I noticed are.

1) The sound goes away when I press the brake pedal,

2) The sound gets MUCH worse during left turns, when I load the right side of the car, and basically goes away when I take right turns.

3) After my drive my passenger wheel (where the noise is comign from) was considerably hotter then the drivers side wheel.


I thought possibly the passenger wheel bearign was bad, but I took it out and looked at it and it looked perfect and rolled fine.
One thing I did notice was the fluid was BLACK, and it wasnt very old... maybe 1k miles if that. It also appeared to be metal shavings, so I drained the fluid through a coffee filter hoping to find some metal but I didnt see any, so maybe the metal was just in my imagination..

The only thing I can think of right now is the swap axles from one side to the other to see if the sound switches, then I can isolate my problem.

But I jacked the car up and let it run on jackstands and neither of the wheels seemed to runout very bad.

Not sure where to go and its driving me nuts....

Sucks to here it cry when I pull into a parking lot.

Once its hot if I jack up the car I can barely spin the wheel.

Any help is appreciated.

Thanks
Rich
 
Put a dial indicator on the rotor while its bolted up to the axle and Check the run out ? Mine was about .028 out. And made the same noise you describe after I installed my TC brakes. I put a shim under one side to the rotor. I also removed the pad shims. The majority of the Noise went away but comes back on hard left turns.

Also check your e brake cables for being over tight and to make sure it didn’t get damaged. Or try taking the e brake cables off just for a test drive.

Matt