Proportioning valve question

[mike63078]

I did a 4 wheel disc brake swap using the right stuff kit. I did reuse most of my brake lines and stock distribution block. It seems to break ok but will I gain anything going to the new proportioning valve?

[Ron Sutton]

Mike,

Most proportioning valves, like the 2 different types from Wilwood, simply reduce brake force to the line you have them on. They are "usually" installed on the on the rear brake lines of race cars, so racers can take away rear brake force ... only if needed ... to balance the front to rear braking.

What would be your goal of adding a proportioning valve? Is your braking not balanced? Do you feel you have too much braking force on one end of the car?

P.S. What did you mean by "the new proportioning valve"?

[mike63078]

The kit came with one but it didn't appear to be need. The one I'm using is off a 4 wheel drum car braking seems balanced.

[Ron Sutton]

I don't want to assume you need it or don't need it, with what limited info we're looking at. Did you talk with the provider or manufacturer of the brakes ? If not, I'd suggest you talk to their techs or engineers.

Why I suggest this is... you may not notice anything wrong, until you brake at threshold, and then balance is critical. If the brake manufacturer engineered the system you have for your application, I suspect they provided the proportioning valve either for certain situations or all applications. Again, i would talk to them.

You never did say what type of proportioning valve it is. What does it have for adjustment ? Round knob? Handle? Lever? No adjustment?

[mike63078]

this is a none adjustable valve.

The big question is am I loosing out using the stock 4 wheel drum metering block vs using the new combination valve. Is the drum metering block creating incorrect pressure in the system

[Ron Sutton]

I'm not experienced with the non-adjustable proportioning valve. I'd suggest you talk to their techs or engineers.

Best wishes.