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Old 07-14-2008, 07:27 PM
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Dual M/C for '55 Ford & Residual Valves

Just purchased a Power Brake kit from MBM Brake for my '55 Ford Customline with 4-wheel drum brakes.

It has a 7" Dual Diaphragm, 1" Bore Corvette Style M/C (no built-in residual valve), firewall bracket and inside pedal linkage.

My question.....Do I have to install 10# residual valves in the front and back lines? The M/C is mounted high on the firewall far above the wheel cylinders. Remember now...this is an all drum car!!!

If I don't install the residual valves, what kind of pedal feel am I going to get? Or will I feel a difference at all?

Mfg. recommends residual valves!!!!!

Thanks for all your input~

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Old 07-14-2008, 07:54 PM
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Drum brakes need a 10# residual pressure valve. Wheel cylinders seal real well in one direction only. Without a small amount of pressure in the wheel cylinder, air can enter. The pedal may be great right after you bleed the brakes, but you will eventually get more and more air and the pedal will get spongy.
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Old 07-17-2008, 05:25 PM
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Installing Residual Valves

After much discussion on other forums, I've decided to install residual valves in front and rear lines. I'm replacing all the lines anyway and it's not going to be much more work to put in the residuals.

Thanks for your reply
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Old 07-17-2008, 10:00 PM
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Sweet, I have a 1956 ford customline I am working on. Thought maybe we could swap info and how to's. Shoot me a pm or let me know how to get in touch if you want to.

Todd
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Old 07-17-2008, 10:12 PM
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I used them on my 56 F-100 (drum brakes). I was told you needed them regardless, but my power brake booster and dual resivour master cylinder are mounted under the cab.

I also have vacuum wipers. The old Y-block does not have enough vacuum for it all. I installed a vacuum canister under there as well from Summit racing. Fixed it right up.
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Old 07-18-2008, 07:46 AM
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This one's for you TODD!!!

Todd: I've added you to my buddy list and will send you a PM. Thanks~~~~Ron
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