Prop Valve frustration - help needed - Team Camaro Tech
Brakes, Suspension & Steering Conversion questions, Steering & Handling

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post #1 of 18 (permalink) Old Dec 4th, 17, 06:36 AM Thread Starter
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John
 
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Prop Valve frustration - help needed

Granted, I have zero experience doing all the work I am doing to my Camaro, but I enjoy it (for the most part), and it's the only way I can afford to fix her. I have been trying to upgrade to Disc brakes. I bought a brand new Disc/Disc MC and a Disc/Disc Prop valve. Trying to fit everything up and figure out how to connect everything, is like having a puzzle with missing pieces and trying to figure out what pieces you need to finish.

Bench bleeding the MC, and installing it, was no problem. The prop valve on the other hand has been giving me fits. I finally got the right adapters I need (thanks to Inline Tubing), to connect the brake lines to the prop valve, and from the prop valve to the MC. However, the prop valve is not connected to a bracket. I could not figure out what bracket to use and how to configure it, to work. So right now it's only being held in place by the various brake lines. I need help figuring out how to connect the prop valve with a bracket, or is it fine to not use a bracket?

Thanks in advance for any and all help.

BH
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post #2 of 18 (permalink) Old Dec 4th, 17, 04:05 PM
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Garth
 
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Re: Prop Valve frustration - help needed

Either way is fine. If Inline Tube doesn't have a bracket you'll need to fabricate one. Use the studs for the MC to fasten it.

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post #3 of 18 (permalink) Old Dec 4th, 17, 06:42 PM
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Re: Prop Valve frustration - help needed

Pirate Jack has what you need.

Proportioning Valves - Brackets - Pirate Jack

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post #4 of 18 (permalink) Old Dec 5th, 17, 02:39 AM Thread Starter
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John
 
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Re: Prop Valve frustration - help needed

Thanks, guys.
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post #5 of 18 (permalink) Old Dec 5th, 17, 04:46 AM
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Re: Prop Valve frustration - help needed

Thanks Rick - yet another parts source I did not know about. Prices look pretty good too for a full 4wheel disc conversion.
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post #6 of 18 (permalink) Old Dec 5th, 17, 12:10 PM
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Re: Prop Valve frustration - help needed

Disc/disc should only need a distribution valve, nothing more.

If you still have your cast iron distribution valve (and bracket), I suggest cleaning it and putting it back into service.
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post #7 of 18 (permalink) Old Dec 6th, 17, 02:31 AM Thread Starter
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Re: Prop Valve frustration - help needed

Quote:
Originally Posted by mahunt View Post
Disc/disc should only need a distribution valve, nothing more.

If you still have your cast iron distribution valve (and bracket), I suggest cleaning it and putting it back into service.

Even if it was from a Drum/Drum setup?
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post #8 of 18 (permalink) Old Dec 7th, 17, 09:17 PM
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Re: Prop Valve frustration - help needed

Yup.
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post #9 of 18 (permalink) Old Dec 8th, 17, 07:25 AM
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Al
 
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Re: Prop Valve frustration - help needed

John, Check with your systems manufacturer to see if a
separate prop. valve is needed. The pressure MUST be
proportioned between the front and rear in some manner
for safe operation. It's not something you want to do
incorrectly. You can read all kinds of pros and cons on
using a prop. valve but the manufacturer knows how
their system was designed. An improperly balanced
system can have disastrous results.

Al

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post #10 of 18 (permalink) Old Dec 8th, 17, 07:53 AM Thread Starter
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John
 
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Re: Prop Valve frustration - help needed

I didnt order a system, just parts. COnverting from drum/drum to disc/disc.
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post #11 of 18 (permalink) Old Dec 8th, 17, 04:07 PM
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Re: Prop Valve frustration - help needed

You need a proportioning valve for Disc/Disc. What you have looks like a "Combination" valve, which has a proportioning valve, a metering valve, and a brake warning light switch all in one. It gets the job done, but lacks adjustablilty so you need to use factory front and rear brakes that go with that valve setting.

On high performance systems that we autocross and use aftermarket disc/disc combinations, we use just an adjustable proportioning valve in the rear line, and no brake warning light or metering valve. If I wanted a brake warning light, I'd use a drum/drum warning light switch plumbed to the master cyl, and install the prop valve after the switch in the rear line. I've put one before the switch and it worked, but there's a chance it would trigger the warning light that way.
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Last edited by davidpozzi; Dec 8th, 17 at 04:54 PM.
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post #12 of 18 (permalink) Old Dec 9th, 17, 06:10 AM
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Al
 
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Re: Prop Valve frustration - help needed

John, Go to thestopshop.com. They have good video's
explaining the valves and lines used.

Al

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post #13 of 18 (permalink) Old Dec 11th, 17, 03:06 AM Thread Starter
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Re: Prop Valve frustration - help needed

Thanks again, everyone. I really appreciate all the information.
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post #14 of 18 (permalink) Old Dec 11th, 17, 03:23 AM
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Re: Prop Valve frustration - help needed

So on a Disc/Disc, do you still need the valve that's along the frame rail under the drivers seat?

Brett.....

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post #15 of 18 (permalink) Old Dec 11th, 17, 04:53 AM
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Re: Prop Valve frustration - help needed

Quote:
Originally Posted by Brettallen59 View Post
So on a Disc/Disc, do you still need the valve that's along the frame rail under the drivers seat?

Brett.....
That factory valve does not apply to aftermarket disc/disc or the JL8 option. Camaro Chassis - Suspension, Axle, Brakes, & Wheels

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