Hey guys I had a question about my disk brakes. Im going to run a manual master cylinder for disk brakes on the maverick but was wondering it I need a stock proportioning valve? Did manual disk brake mavericks have a proportioning valve on the master cylinder?
Yeah but my maverick WAS a all drum brake car with no proportioning valve. So my question again is do I need one (a proportioning valve) to run the bigger master cylinder for the manual disk brakes.
Some people here have used the stock prop valve with no issues.I went 4 wheel disc and chose to install an adjustable prop valve. I'd guess that if you were just gonna go disc front, you'd be allright with the stock valve. Allthough some have used the stock valve on a 4 wheel setup as well.
Even drum brake cars came with a proportioning valve. I kept my drum brake one and use it with the disc's.
That is the biggest pain in the arse with my new old car is the 4 wheel drum brakes. It takes a bit of getting used to having the push the pedal that hard to stop.
Shouda drove a mechanical brake old car (before hydraulic brakes). Talk about pulling the steering wheel off the column
Thanks guys for all your help. Have you had any problems with the stock drum proportioning valve DAVE?
Drum and disc have 2 different prop valves. Your drum car has one or else every time you tapped the brakes the rear end would lock up. Unless some genius removed it. Need more pressure up front than in the rear. You can also do the swap and use an aftermarket adjustable rear prop valve.
What ever was in the car before the swap, they were a drum/drum cars now they are disk/drum cars, I used the same block or valve with no problem.
First, use the correct master cylinder. Get one for a 74 Maverick with non power assisted disc brakes (cheap at auto parts store). The Drum/drum master cylinder original to your car has 2 residual check valves built in to maintain pressure after the peddle is released. The disc calipers do not have to overcome spring pressure to move, so a residual check is not needed and should not be used in that circuit. A proportioning valve should be used because disc and drums do nor react the same way. By adding an adjustable proportioning valve in the rear circuit, you can actually tailor your braking to better than factory since the factory was generic used in different vehicle, different weights. Also helpful if running different sized tires front to back. jegs, summit, wilwood all make a combination adjustable proportioning valve and distribution block. Maintains use of brake light on dash too. I would install a new master and plumb it to this and be done, right. He is a very informative article that I found. Everyone who has or will do a swap should read it. -> BRAKE PLUMBING Hope this helps.
