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  • adjustable proportioning valve

    Anyone have any experience using an adjustable prop valve? I have a 79 cj7, front disc, rear drum, 33" tires. Stock valve is shot, deciding which way to go.

  • #2
    memory...

    CJ79,

    I can't direct you to the exact site but I remember reading a very well written and researched link where the guy did NOT recommend the adjustable prop valve.

    Do some Google on it before you decide on your course of action or search the forum threads.

    Oh, and welcome to the board, man.

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    • #3
      www.inlinetube.com The only issue, one wire brake fail light compared to the factory two....or the other way, can't remember. I didn't get the adjustable, haven't heard one way or the other.

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      • #4
        Originally posted by gnarly
        www.inlinetube.com The only issue, one wire brake fail light compared to the factory two....or the other way, can't remember. I didn't get the adjustable, haven't heard one way or the other.
        I didn't notice it having 1 wire or two but looked like two.

        Good price too.

        errrr.. silly Frame websites.
        http://www.inlinetube.com/Prop%20Valves/VML101.htm

        I would not recommend replacing the combination valve with an adjustable proportioning valve. The combination valve has a safety valve wich cuts off the broken side, Has a metering system for the front disks and a dual rate proportioning valve on the rear brakes.

        Do you realy want to just go back to a single proportioning valve? It would be kinda scary if you lost one side or the other and takes a whole bunchs of pumps to bring the other brakes up. Would you want that to happen on a steep hill or traveling at 65 MPH?

        If you want safe go with DUAL seperate Master cylinders. You won't even need a proportioning valve then.

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        • #5
          Thanks for the input. It looks like the original valave is the best way to go, thanks for the link John

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          • #6
            On the subject of proportionate valves, I was posting on another thread and then saw yours. Maybe you have an idea that may help my brake problem.

            On my 78 & 82 buildout. I took the 78 front end disk brakes, and rear 11 inch rear brakes (all new parts), and kept the proportionate valve that came with it, and switched out the manual MC with the Power Booster/MC from the 82.

            I can bleed the back fine, but again the front just gives me a trickle. What does anyone know about the 'special tool' that is mentioned on the two types of proportionate valves. in the '82 manual i have it mentioned that on the metering valve on one, you pull out while bleeding, and the other you push in while bleeding.

            I'm not sure which I have, or what type of tool is needed.

            Anyone messed with this 'metering valve' that can share their experiences/guidance?

            Thanks.

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