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proportioning valve

  1. Classic Tech
    I just finished a front disc brake swap - including master cylinder and proportioning valve - and now the rear drums gradually lock up on me as I drive. Any ideas what could be causing this? The lines are solid and aren't collapsing, the front brakes aren't locking, pressure just builds...
  2. 5.0L Tech
    Can you swap the proportioning valve guts from a 1998 stang into the valve from a 1993?I dont want to run an adjustable valve on the back line.I want it to look stock.
  3. Classic Tech
    So I brought my car to get the drum brakes done (Brake Fluid Flush, Resurfaced, the whole 9 yards). Drove around after and the brakes worked, but it required me to, literally, stand on the pedal to get the the car to stop. So I brought it back in and they made some adjustments and checked for...
  4. 5.0L Tech
    i have an 89 GT and the proportioning valve is leaking brake fluid out of the front, i've found that it near impossible to find a factory replacement, what the heck do i need to do? i'm at my wit's end with this... it is a factory set-up, factory drums in the back, factory master cylinder...
  5. Classic Tech
    I have a 1967 mustang and I have been working on the brake system. There are manual drum brakes all around. There is a problem with the brass valve located by the master cylinder. I heard that the rod inside the valve is supposed to float and move easily, but mine is stuck. Is there some way to...
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