Combination Valve Install question

Brakes for your Classic Mopar

  1. C2ndLTpigeon

    C2ndLTpigeon Mopar or no Car! FABO Gold Member

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    Going to install a new combination valve on my 73 Valiant today, is there any bleeding procedure needed before install? Or will this take care of itself when bleeding the brakes?

    Thanks
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  2. Krooser

    Krooser Reform School Graduate

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    Good luck getting it to work... all those new valves are junk... sorry to say.
     
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    • C2ndLTpigeon

      C2ndLTpigeon Mopar or no Car! FABO Gold Member

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      Not really helpful... where else is someone to go when they have to replace one? Working with what is available.
       
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      • jdsduster

        jdsduster Well-Known Member

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        i think someone rebuilds them,cant think of the name though
         
      • Professor Fate

        Professor Fate Push the button, Max...

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        It will take care of itself when you bleed your system.
        That said, be prepared for leakage, a common problem with the repro valves.
        Search the brake forum for the subjects of "leaking proportioning valve" or "leaking combination valve", etc. and "annealing copper washers".
        Also, open it up and clean it out as best you can, common to have manufacturing debris inside of them that makes them hang up when in use.
        Best of luck!
         
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        • Syleng1

          Syleng1 Karma is real and Life is short... FABO Gold Member

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          FYI- new ones as mentioned sometimes have issues. Debris’s, leakage, cross threaded fittings.
          If your bolts up - Great. Then try to bleed the brakes and keep an eye on it when you do each wheel. If it leaks, then it’s a bad one. If not it will self bleed as you push fluid thru the system. Good luck!
           
        • Oldmanmopar

          Oldmanmopar Going left turning right FABO Gold Member

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          It will bleed itself. Those valves are good. It is the same valve I use with large bolt pattern single piston Kelsey Hayes calipers. That is the newer weather head style 73 and newer. The early for 66-72 was the kelsey hayes style it is the one on the right. I have not had problems with the aftermarket weatherhead style

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          • 1969383S

            1969383S FABO Gold Member FABO Gold Member

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            Sometimes you just have to loosen and tighten all the fittings a few times to get a good seal!

            Especially if changing lines at the same time!
             
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            • dartfreak75

              dartfreak75 Restore it, Dont part it! FABO Gold Member

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              Make sure to double flare your lines if your flaring them yourself. I think all the prebent stuff comes double flared
               
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              • C2ndLTpigeon

                C2ndLTpigeon Mopar or no Car! FABO Gold Member

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                Took the new valve apart and cleaned it, I also took the old one apart to see if it was gunned up. Here are some pics of the new and old. The old one looks gutted. Does not have all the stuff the new one does, the old one also has initials and a reman date so it was rebuilt. Correctlly I don't know.

                New
                20210922_194036.jpg 20210922_194408.jpg
                Old
                20210922_194059.jpg 20210922_194251.jpg
                 
              • 70dart340

                70dart340 FABO Gold Member FABO Gold Member

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                I just bought a set from Rick Ehrenburg's Ebay store. They work perfectly, and are affordable. If you don't know Mr. Eherenburg, google him. A great Mopar resource. I'm not plugging him, I don't work for him, but his parts have helped solve a bunch of problems I've had on my '70 Swinger 340 brakes. If I've broken any rules, Mods, I apologize.
                 
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                • RustyRatRod

                  RustyRatRod I was born on a Monday. Not last Monday. FABO Gold Member

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                  The old one appears to be a distribution block only.
                   
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                  • Oldmanmopar

                    Oldmanmopar Going left turning right FABO Gold Member

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                    • Oldmanmopar

                      Oldmanmopar Going left turning right FABO Gold Member

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                      • C2ndLTpigeon

                        C2ndLTpigeon Mopar or no Car! FABO Gold Member

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                        Which may be the problem? Factory manual shows it would be a combination valve for disc brakes.
                         
                      • RustyRatRod

                        RustyRatRod I was born on a Monday. Not last Monday. FABO Gold Member

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                        Well it certainly appears to not be a proportioning valve, doesn't it? Is the car a factory disc brake car?
                         
                      • C2ndLTpigeon

                        C2ndLTpigeon Mopar or no Car! FABO Gold Member

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                        Factory disc, the valve was horribly rusty, installed the new combination valve, had to tighten the fittings good but so far no leaks, and fluid is staying where it should in the master!
                        I looked at the date on that original valve and it was put on there a month before I bought the car, prev owner wasn't very knowledgeable on stuff like that so they probably through the incorrect part on there.
                         
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