OK, after dry road testing I have some issues. My rear brakes are dragging, and the pedal is at the top of it's travel with hardley any movement at all. It only took about a half hour of driving to get the rears dragging so hard I had to stop and let them cool off, just to make it home. According to the FSM, the proporting valve is part of the RWAL syestm. It is a seperate piece, the brass looking asssembly attached to the RWAL pump and valves. I need to try and figure out a way to put it back into the system without having to go back to my old master cylinder. Problem is, the 4 door MC is physically bigger, and won't fit in the bracket for the RWAL plumbing. It may not be this at all, I just don't know at this point. I'm going to try and bleed out some pressure in the rear wheel cylinders first, just so I can get the wheels free. Back to the drawing board.

  OK, I'm wrong again. After letting it cool a bit and putting it up on the jackstands, it's the FRONT brakes that are dragging and heating up. The rears seem fine. So anyone have any ideas about what could be the problem? I'm getting ready to put all the stock stuff back in, since the proportioning valve is my only guess at this point. Without it I think it's just not going to work.

A little cross-linking for future ref / searches: http://www.zukiworld.com/forum/index.php?topic=25837.0

Following your problem, as I'm going to be doing something similar down the road. Good luck.

Seem to have it working correctly , for now. I must have had the front two lines reversed. I switched them, and went for another test drive, so far so good. No brake issues at this point. The brake pedal now feels more realistic though. Meaning I do have to use some more pedal travel, nothing like with the stock MC, but certainly more than I did before I reversed the lines. Now the pedal travel is about 2 " before hard braking begins. I'll take it for another , longer ride after rush Hr. traffic dies down a bit.

Eric, do you want to combine these two threads just to eliminate confusion?