I was looking at this proportioning valve from Wilwood 260-11179 and I am trying to understand what is the different between the stock proportioning valve and the Wilwood adjustable?

I need to replace my proportioning valve since it damaged.

I notices that the stock proportioning valve is a bit more money than the Wilwood adjustable proportioning valve. Why is that? Are the stock better than Wilwood? Are both proportioning valves the same pressure range?

My Camaro is a 1988 and I have the rear disc brakes (iron calipers) 9 bolts that I swapped out the old drum axle 10 bolts. The front has the C6 Z06 brakes.

Let me know thanks.

This is the image of the Wilwood Proportioning valve 260-11179:

 

I just put the willwood prop valve you are talking about on my car. I converted to disk on the rear and am fixing to convert the front to LS1's. I have no braking issues. Just take time to adjust the valve properly before driving far or definately before driving aggressively.

As a side note, the wilwood prop valve is setup for the small size brake line and 45* flares. So you will need to buy adapters of reflare your factory brake lines. You will also need to make new lines from the master to the prop valve cause the factory line routing does not line up with inputs and outputs on the prop valve.

If that all seems like too much, you can just get a 1LE replacement prop valve which should bolt right up with no issues or adapters needed and will also work just fine.

I think that an adjustable prop valve will work with your system better because you can tailor it to your particular brake components. I know this is a hotly contested issue so this is my opinion, not any sort of fact.

 

Thanks for the information about the lines setup. Also is the Wilwood better than stock prop. valve? But why would the stock be more money than Wilwood? Are both the same pressure range psi?

Do you have any picture of your Wilwood setup?

Let me know thanks.

 

Price isn't always better. Stock pieces from GM aren't exactly the cheapest parts around, but Wilwood does make good brake parts and I know Ed Miller sells this with his rear LS1 conversion disk brakes so it's definitely going to be good enough for the stock iron rear calipers.

 

Yeah, here is my wilwood vavle installed.

 

Where did you get the M14x1.5 adapter for the rear brake line..?? Or how did you do ther rear brake line.??

Wilwood is 3/8-24 and the hard line to the rear is M14x1.5. I found a carb adapter but not sure if it will hold the psi and heat for racing.

 

Just throwing this out there in case you didn't know: you can take the line from the master cylinder for the front brakes and put a T splitter in line and then run each line straight to the front calipers. Then just put an inline adjustable valve for the rears. No need for a proportioning valve unless you must have that brake sensor.

 

FB are not the problem... I have the lines and fittings for that.

The problem is the rear hard line is a M14x1.5 and the output of the Adj wilwood is 3/8-24. The only fitting i can find is a carb fuel line adapter but i'm not sure about it holding pressure and heat. I didn't want to re-flare a fitting but it appears i have no choice.

The other issue is the factory hard line is 6mm tube size and 3/8-24 fitting uses a 3/16" tube size.

But thank you for the info....

From what i've found there is not a 3/8-24 fitting for 6mm tube so i'm going to have to find a fitting for the 6mm tube, re-flare then adapter(Downsize) to 3/8-24 fitting.