Alright, so I got my M50 in the car.
During the process I changed over to an iX brake booster with an e34 M5 MC. I bled the brakes and all was good until I started driving it around the block. The brakes worked a couple of times, maybe 10 stops or so, and the pedal became harder and harder to push. I also noticed while at low speeds shifting, the car wanted to stop. I take the car out of gear and then the car comes to a complete stop pretty damn fast with out me pushing the pedal.
I figured out that the rear brakes were staying locked up. So I went to the MC and loosend a brake line to relieve pressure, and then they unlocked. I found that the MC lines were backwards, switched them around. This worked for about 10 or so stops again, locked back up, again
.
For the life of me, I can't figure out what is causing this. I did't put the proportioning valve back in (the one that sits below stock 87' 325iS MC), but this SHOULDN'T be causing the rear brakes to stay locked up, instead the front tires should be easier lock up, right? Also, the BMW TIS website diagrams don't even have the proportioning valve in any of their diagrams.
Help me out please!
During the process I changed over to an iX brake booster with an e34 M5 MC. I bled the brakes and all was good until I started driving it around the block. The brakes worked a couple of times, maybe 10 stops or so, and the pedal became harder and harder to push. I also noticed while at low speeds shifting, the car wanted to stop. I take the car out of gear and then the car comes to a complete stop pretty damn fast with out me pushing the pedal.
I figured out that the rear brakes were staying locked up. So I went to the MC and loosend a brake line to relieve pressure, and then they unlocked. I found that the MC lines were backwards, switched them around. This worked for about 10 or so stops again, locked back up, again

For the life of me, I can't figure out what is causing this. I did't put the proportioning valve back in (the one that sits below stock 87' 325iS MC), but this SHOULDN'T be causing the rear brakes to stay locked up, instead the front tires should be easier lock up, right? Also, the BMW TIS website diagrams don't even have the proportioning valve in any of their diagrams.
Help me out please!
Comment