Original A904 Trans Factory Filter?

Transmission and Drivetrain Tech

  1. 340inabbody

    340inabbody Well-Known Member

    Messages:
    115
    Likes Received:
    20
    Joined:
    Jan 31, 2018
    Location:
    Arizona
    Local Time:
    11:24 AM
    I just changed my 904's filter. It was a metal fine screen. Trying to determine if this was the original filter. Seems like all the aftermarket filters are like a fabric. Does anyone know if the screen type filter was the original filter?
     
  2. Hellrats

    Hellrats Still wrenching after all these years FABO Gold Member

    Messages:
    878
    Likes Received:
    595
    Joined:
    Jan 24, 2012
    Location:
    N.E. Ohio
    Local Time:
    2:24 PM
    I'm gonna put my money on aftermarket. Plus it may have a shift kit added that the filter came with.
     
    • Agree Agree x 3
    • 340inabbody

      340inabbody Well-Known Member

      Messages:
      115
      Likes Received:
      20
      Joined:
      Jan 31, 2018
      Location:
      Arizona
      Local Time:
      11:24 AM
      Yes I was told it was rebuilt with a shift kit but it’s leaking and was wondering what kind of rebuild I actually am dealing with. What was used by the factory with respect to filters?
       
    • Hellrats

      Hellrats Still wrenching after all these years FABO Gold Member

      Messages:
      878
      Likes Received:
      595
      Joined:
      Jan 24, 2012
      Location:
      N.E. Ohio
      Local Time:
      2:24 PM
      All I have ever seen from the factory were the cheese cloth type. If it's a screen type filter it's most likely aftermarket. There is no way of telling what type rebuild you are actually dealing with from a filter as far as I know.
       
      Last edited: Mar 14, 2019
      • Agree Agree x 1
      • 340inabbody

        340inabbody Well-Known Member

        Messages:
        115
        Likes Received:
        20
        Joined:
        Jan 31, 2018
        Location:
        Arizona
        Local Time:
        11:24 AM
        I was just wondering if the trans was even opened. If it was a factory original type of filter (as I never seen a screen type for the 904) then it was not rebuilt.
         
      • pishta

        pishta I know I'm right....

        Messages:
        13,912
        Likes Received:
        3617
        Joined:
        Oct 13, 2004
        Location:
        Tustin, CA
        Local Time:
        11:24 AM
        screen type? Forget that, wonder if its so old that the cheese cloth over the screen just dissolved....I have a very fine gold screen coffee filter and I still get sludge at the bottom of every cup. Nothing when I supplement that with a good old paper filter.
         
      • Doug.S

        Doug.S 1964 Dart More Door

        Messages:
        107
        Likes Received:
        56
        Joined:
        Jan 21, 2018
        Location:
        Saylorsburg, PA
        Local Time:
        2:24 PM
        Just wanted to throw out there that 1964 was the change over year for the trans filter on my Dart. It came from the factory with a metal screen and an in cooler line filter. I have since changed the pan and the filter. If this is an early 904 the pan will be too shallow to use the fabric covered filter and you could starve the pump. Deeper pan would be a plus. Also if it is an early 904 it will need the fabric covered filter with 2 holes. Front and rear pump. Some early drag racers used to find the screens and install them for better fluid flow. They would not filter the trans fluid at all. Not necessary 1/4 mile at a time. Doug
         
        • Agree Agree x 4
        • MoparMike1974

          MoparMike1974 Well-Known Member

          Messages:
          1,032
          Likes Received:
          545
          Joined:
          Jun 16, 2017
          Location:
          Maryland
          Local Time:
          2:24 PM
          Its my understanding that the metal screen filters are intended for race only trans. The felt type filter does a much better job at filtering. The difference in the two would be flow but the felt type will flow plenty for most applications.
          As far as I know all mopars came with the felt type, the exception may be some really early stuff but im not familiar with anything pre- 65. Those screen filters come with some shift kits and you can buy them by themselves. What year car are you dealing with?
           
          • Agree Agree x 3
          • TrailBeast

            TrailBeast Slightly Twisted Member

            Messages:
            19,355
            Likes Received:
            5758
            Joined:
            Mar 11, 2011
            Location:
            Arizona
            Local Time:
            11:24 AM
            If I remember correctly some of the early transmissions used a screen filter, and I know for fact that some performance oriented transmissions got screens as part of a kit in the aftermarket.

            I see people posted while I was typing.:D
             
            • Like Like x 1
            • Agree Agree x 1
            • fishmens67

              fishmens67 Well-Known Member

              Messages:
              5,305
              Likes Received:
              2078
              Joined:
              Nov 10, 2012
              Location:
              idaho
              Local Time:
              1:24 PM
              63 max wedge 727 had a screen filter.
               
            • 340inabbody

              340inabbody Well-Known Member

              Messages:
              115
              Likes Received:
              20
              Joined:
              Jan 31, 2018
              Location:
              Arizona
              Local Time:
              11:24 AM
              1970 Satellite
               
            • 340inabbody

              340inabbody Well-Known Member

              Messages:
              115
              Likes Received:
              20
              Joined:
              Jan 31, 2018
              Location:
              Arizona
              Local Time:
              11:24 AM
              I put a deeper pan in. Its a Summit real nice by the way. It came with the filter extension. I used the mopar gasket which was also nice. I replaced both seals in n the speedo housing. No leak at the dipstick or the shift linkage seal. But I am still seeping fluid that ends up at the two eyelets which I believe are the mounting tabs for a floor shift. I can’t find the source of the leak yet and its hard when your on your back. Whish I had a lift.
               
            • MoparMike1974

              MoparMike1974 Well-Known Member

              Messages:
              1,032
              Likes Received:
              545
              Joined:
              Jun 16, 2017
              Location:
              Maryland
              Local Time:
              2:24 PM
              Your leak is probably coming from the rear band pivot pin located at the tailshaft gasket flange. I seal the end with silicone and they dont leak. The o-ring alone does a poor job.
               
              • Agree Agree x 1
              • 340inabbody

                340inabbody Well-Known Member

                Messages:
                115
                Likes Received:
                20
                Joined:
                Jan 31, 2018
                Location:
                Arizona
                Local Time:
                11:24 AM
                Mike can you explain where this is or show it on a diagram? I can then look there to see if thats it.
                 
              • Cope

                Cope Fusing with fire

                Messages:
                2,714
                Likes Received:
                2312
                Joined:
                Oct 20, 2009
                Location:
                San Jose, Ca.
                Local Time:
                1:24 PM
                Could also be leaking from under the trans mount. That gasket is known to leak.
                 
              • 340inabbody

                340inabbody Well-Known Member

                Messages:
                115
                Likes Received:
                20
                Joined:
                Jan 31, 2018
                Location:
                Arizona
                Local Time:
                11:24 AM
                I fixed that as well...
                 
                • Like Like x 1
                • 340inabbody

                  340inabbody Well-Known Member

                  Messages:
                  115
                  Likes Received:
                  20
                  Joined:
                  Jan 31, 2018
                  Location:
                  Arizona
                  Local Time:
                  11:24 AM
                  The tailshaft end is dry. The leak looks like its where the tailshaft is bolted to the gearbox area but can’t find the spot.
                   
                • pishta

                  pishta I know I'm right....

                  Messages:
                  13,912
                  Likes Received:
                  3617
                  Joined:
                  Oct 13, 2004
                  Location:
                  Tustin, CA
                  Local Time:
                  11:24 AM
                  now that makes more sense now.
                   
                • Doug.S

                  Doug.S 1964 Dart More Door

                  Messages:
                  107
                  Likes Received:
                  56
                  Joined:
                  Jan 21, 2018
                  Location:
                  Saylorsburg, PA
                  Local Time:
                  2:24 PM
                  Some of the bolts that hold the tail shaft to the gear box portion of the trans have the potential to leak. They use a special washer that is coated with a black sealer. I used the special washers and mine still leaked. So after my trans was in my car, I backed off each bolt, one at a time, and cleaned and sealed the flange end where it touches the housing. I used ATF safe RTV to seal every bolt. I finger tightened each bolt and waited the recommended time before going back to full torque. I have no leaks from the bolts now.
                   
                • Darter6

                  Darter6 Well-Known Member

                  Messages:
                  3,751
                  Likes Received:
                  869
                  Joined:
                  Jan 16, 2008
                  Location:
                  Nevada
                  Local Time:
                  11:24 AM
                  My 63 Valiant had a screen in the pan and a filter in the cooler line. The early pans were flat bottom.Later pans have the circle dimple for the in pan filter.
                   
                • Bad Sport

                  Bad Sport HALF A BUBBLE OFF Staff Member FABO Gold Member

                  Messages:
                  35,096
                  Likes Received:
                  14165
                  Joined:
                  Jun 12, 2010
                  Location:
                  The Wolverine
                  Local Time:
                  2:24 PM
                  If it's a small leak they can be hard to find. Clean that area real good and get a can of Desenex foot powder SPRAY. Spray a bit on the trans where you suspect the leak is, let it dry, drive it, check it again.

                  It might show itself better.
                   
                  • Thanks! Thanks! x 1
                  • transman

                    transman Well-Known Member

                    Messages:
                    685
                    Likes Received:
                    179
                    Joined:
                    Jun 17, 2007
                    Location:
                    Western Canada
                    Local Time:
                    11:24 AM
                    OEM filter is the dacron(fabric) filter. It is the large style. Used from 1966-2001 for the 727 and from 1966-2003 on the 904. The smaller brass one used on both the 904 and the 727. Most often the brass screen used in the aftermarket for high performance use as it supposedly has less restriction than the dacron style. When I serviced the transmission on the Duster I bought new in '71, it had the dacron filter in it, and my Challenger also had the dacron style. In all my years in the transmission parts industry the only time we sold the brass filter was if someone asked for it.
                     
                    • Thanks! Thanks! x 1
                    • 340inabbody

                      340inabbody Well-Known Member

                      Messages:
                      115
                      Likes Received:
                      20
                      Joined:
                      Jan 31, 2018
                      Location:
                      Arizona
                      Local Time:
                      11:24 AM
                      Thanks man this is what I was looking for transman!
                       
                    1. This site uses cookies to help personalize content, tailor your experience and to keep you logged in if you register.
                      By continuing to use this site, you are consenting to our use of cookies.