What Does a Proportioning Valve Do | Wilwood Brakes

[@deankay4434]

Speedway you are the best! I think that pickups are worse as drums can lock and cause. You are changing one area from the proportioning valves hold-off pressure and the pressure point which effects the apply pressures. Keep the videos coming. DK, Omaha.

[@squeak56]

Finally a simple explanation 😅

[@Dwigt_Rortugal]

So, if I understand correctly, normally turning any valve clockwise closes it, but with Wilwood valves, it's the opposite? The Wilwood rep said that all the way clockwise is wide open to the rear brakes. I'll watch it again.

[@krusher74]

down it off, up is on, why are you making it so hard?

[@offgridmangogrower]

A general question about a master cylinder bore size range……without complicated formulas…..runnning a 6 pot and 4 pot calipers on a 3/4 t 56 travel-all…..?

[@wheelmanvicful]

Good info

[@javierargumedo3]

any idea how to wire proportioning valve switch? there is 2 wires.

[@63Buick]

so for drum drum 2 10lb checks for front and rear?

[@GummyMann]

his instructions on how to set the valve are backwards according to the willwood instructions

[@elbergasjason494]

i was gonna say the same thing

[@thetxwildchild]

Nobody ever talks about what if you need more break to the rear... Will this give you more break versus a fixed proportioning valve?

[@krusher74]

No you never need more brake in the rear. Th wight shifts forward as you brake, if the back end brakes harder is will lock of and make you crash. Thats why nobody talks about it. the most you will go is 50/50

[@Macnificent78_]

What would be a good adjustment im running full wilwood brake system full qa1 level 2 Ford 9inch with 3.0 gears on a 26 inch wheel im trying to do a simple burn out an the car want to keep going Whats your idea setting for the Proportion val also I have a 383 stroker paired with a th350 any tip or trick would be greatly appreciated

[@p.b.sHUNTING]

There is no number setting…. It’s an adjustment dial

[@krusher74]

go test it hard brake with it all the way screwed down 50/50 brake and see if the backs lock, if they do turn it out one turn, keep testing till the back don't lock. Most people never drive hard.brake hard enough to need it set up right, or the willwoods they bought in the first place. and I don't know what you think the 9 inch, 3,0 gears and 26" tall tyres has to do with how your brakes sound be proportioned!

[@linovassallo]

Hi. I have a set of Wilwood Disc Brakes. And a Proportioning valve installed. I am confused of how far do I have to screw in the valve. Shall I Unscrew it all out or Half-Way please? Thanks in Advance.

[@krusher74]

if you have it all the way in/down you will be at 50/50 if you test brake hard and the backs lock up you then turn it out/up one turn and test and repeat till the back stops locking.

[@Archangel3083]

What if you have a pedal box with bias bar and dual masters? Would this still be an added benefit for further adjustment?

[@RRninja-jq6lp]

Balance bar is fairly limited range. In pedal box system , you use master cylinder size as coarse adjustment, proportioning valve for set-up , than balance bar for fine tuning to driver preference

[@craig7350]

You can oil your rear drums up too, that will prevent them from locking up.

[@nealesmith1873]

Great tip! Ever since my axle seals started leaking my brakes have worked much better.

[@lollipop84858]

I like a couple quick sprays with wd40

[@Jozay562]

Awesome. Good to know.

[@krusher74]

A proportioning valve is an extra item to buy once you have payed for expensive disc brakes for the rear that the factory did not fit of for a reason, now they are too strong back there and lock yiou the rear so you need to pay even more for this part to turn them down.

[@linovassallo]

Just wanted to add that this is on a Ford Mustang 1970 Mach 1

[@krusher74]

If its was called a rear brake limiting valve (which it is) people would not be so confused.