69 Camaro Rear Disc Conversion Headache
I'm new to posting, but have been using this forum as my bible when it comes to questions. Thank you for all of the informative posts that have saved me countless hours!
Anyway, onto my problem-
69 Camaro Conv project that I bought off someone who didn't have time to finish. He bought the CPP 4 wheel disc conversion system. The rear calipers are from an early 90's Caddy Seville.
The front brakes are bled and all set.
The rears were very difficult to bleed - not much fluid or pressure. We finally got them flowing really good and were bled. The problem is after they're bled, the rear brakes remain locked and are held strong enough preventing the car from moving.
I called CPP and they suggested the rod at the booster may be too long and to disconnect the MC and see if that releases pressure. It did not and we're still locked up.
We took one caliper off and cycled it to make sure they weren't seizing.
The only way we've been able to get the caliper to release after bleeding is to undo the bleeder screw and release the pressure.
I think we've narrowed it down to a MC issue or one of proportioning valves. Has anyone else had this happen? Any suggestions? We've got far more time into bleeding brakes than I could ever have imagined.
Thanks in advance!