Rebuild of stock proportioning valve

[Steve340]

I recently rebuilt my disc brake proportioning valve with a kit I purchased off Muscle Car Research. I found their website very informative on how to identify what valve I had, and how to strip and re-assemble it.
The kits are very reasonably priced/good quality and well worth purchasing.
The valve is not hard to rebuild so I would say have a go at it rather than buy new.
I eliminated the metering valve while all the parts were off the car - but I left it in place so it appears sort of stock and I did not have to replace brake hard lines. I have bled the brakes and all appears to be working well. A test drive is a way off yet.

 

[70chall440]

I rebuilt the one for my Cuda as well but then ended up not using it, rather I replaced it with one for a disc/disc set up. I agree that rebuilding them is probably better than trying to find a replacement.

 

[Steve340]

I agree - have seen posts from others saying the new valve was leaking. I guess if you do not have one or are changing to discs they are an option.
They are not a wear item but if you had a brake pipe leak you could not fix they may require replacement.

 

[ZippyZoo]

I also rebuilt the distribution/proportioning valve. I could not believe how much crud was inside - especially in the proportioning valve section! I'm still a long way from driving but have to believe getting all of the crud and sludge out - plus new seals- can only make things better!

 

[cuda joe]

I got disk brakes of a 70 barracuda parts car years ago put in a master cyl from a 74 dart with power brakes hooked it up to the original 4 way drum brake lines works good still

 

[cuda joe]

i forgot to add 4 way drum brakes don;t come with a porportioning valve

 

[Steve340]

If the car is not over braked and locking the rears to early that is great.
My car has the factory disc set up but if I was adapting the car from drum to disc there are far easier/better ways to do the proportioning valve than the stock stuff.

 

[cuda joe]

i put in a little smaller rear brake pistons from a 90 jeep cherokee it's manual brakes no booster stops good. back does not lock up more pedal travel than 4 way disk brakes i tryed my low buck approach and surprisingly it works

 

[heminut]

i put in a little smaller rear brake pistons from a 90 jeep cherokee

So smaller brake cylinders on the rear brakes will lessen the braking in the rear, right?

 

[Steve340]

Right - smaller diameter wheel cylinders will do that either on the front or rear brakes.

 

[heminut]

Right - smaller diameter wheel cylinders will do that either on the front or rear brakes.

Thanks! I knew you could adjust the braking by changing cylinder size, I just didn't know which way was which. Good info there!