Brake Proportioning valve - Ford Muscle Forums : Ford Muscle Cars Tech Forum
 
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post #1 of 3 (permalink) Old 09-01-2019, 09:37 AM Thread Starter
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Brake Proportioning valve

When I installed this proportioning valve years ago I cleverly labelled the top of the knob "R" and "F" with a clockwise arrow pointing to the "R". Now I want to make an adjustment but can't remember if the arrow means faster or slower braking to the rear.
Is there a standard?
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Putts drives a 1965 customized Galaxie. Rebuilt 390, 4100 electric choke on a Performer, MX, AC, PS, PB w Scarebird front discs on Cragar 17" S/S.
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post #2 of 3 (permalink) Old 09-01-2019, 02:27 PM
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Re: Brake Proportioning valve

I have the Wilwood proportioning valve which looks similar to yours. I don't know why you marked yours with an "F"(front?) and "R"(rear?) as it only supplies fluid to the rear.

With mine, opening the valve (counterclockwise) allows more brake fluid to reach the rear brakes, hence more stopping power at the rear and less at the front. Closing (clockwise) reduces the amount of fluid going to the rear brakes and allows more stopping power to the front and less at the rear.
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1967 Galaxie 500 Edelbrock Intake, Holley 600, Electronic Ignition, Wilwood 4-Wheel Disc Brake Conversion
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post #3 of 3 (permalink) Old 09-13-2019, 08:48 AM Thread Starter
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Re: Brake Proportioning valve

Got it, thanks.

Putts drives a 1965 customized Galaxie. Rebuilt 390, 4100 electric choke on a Performer, MX, AC, PS, PB w Scarebird front discs on Cragar 17" S/S.
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