1. Ron816

    Ron816 Well-Known Member

    Messages:
    230
    Likes Received:
    147
    Joined:
    Nov 15, 2019
    Location:
    Quincy, MA
    Local Time:
    6:36 PM
    Installed a new factory mopar clutch from Brewers Performance, I have extreme shudder upon take off to a point that the rear wheels hop violently, removed inspection cover and noticed that the pressure plate was hitting the starter boss, I contacted Brewers and they said they have run into this once in awhile, the boss on some early bellhousings are larger they told me to either relieve the boss or the pressure plate, my question is would the plate hitting the boss cause the shudder?,
     
  2. 67Dart273

    67Dart273 FABO Gold Member FABO Gold Member

    Messages:
    44,981
    Likes Received:
    12564
    Joined:
    Oct 14, 2010
    Location:
    Idaho
    Local Time:
    3:36 PM
    I would say "no" unless you have some problem related. Hell once I saw a guy got a Great Big piece of grit between the flywheel and crank and cocked the flywheel

    Chatter......poor choice of clutch material, that is using some non-sprung agressive race disk in a street app, damaged spring assembly in the hub, oil on the disk, loose motor mounts, or something in the clutch linkage. Could even be some unforseen play in the rear suspension. I would guess it could be a defect / mechanical problem in the pressure plate assembly, but I would call that one "rare."
     
    • Thanks! Thanks! x 1
    • Agree Agree x 1
    • Professor Fate

      Professor Fate Push the button, Max...

      Messages:
      1,021
      Likes Received:
      1283
      Joined:
      Jan 13, 2020
      Location:
      Wisconsin
      Local Time:
      5:36 PM
      What is the condition of your flywheel? New/used/resurfaced? A new disk on a used, worn, glazed, unresurfaced flywheel is also a recipe for the exact problem you're experiencing.
       
      • Agree Agree x 3
      • inertia

        inertia Well-Known Member

        Messages:
        3,323
        Likes Received:
        585
        Joined:
        Feb 4, 2011
        Location:
        Victoria B.C. Canada
        Local Time:
        3:36 PM
        Did you have the flywheel resurfaced ?
        If not,. That'd be my first move.
         
        • Agree Agree x 2
        • RammerJammer75

          RammerJammer75 Well-Known Member

          Messages:
          460
          Likes Received:
          585
          Joined:
          Aug 28, 2020
          Location:
          Kingsport, TN
          Local Time:
          6:36 PM
          I would think if the pressure plate is hitting the starter boss, you would hear that constantly. I don't see how it could cause your shuddering issue, but I could be off the mark there.
           
        • Ron816

          Ron816 Well-Known Member

          Messages:
          230
          Likes Received:
          147
          Joined:
          Nov 15, 2019
          Location:
          Quincy, MA
          Local Time:
          6:36 PM
          New disk, new pressure plate, new flywheel, new throw out bearing
           
        • rklein383

          rklein383 Well-Known Member

          Messages:
          1,556
          Likes Received:
          471
          Joined:
          Dec 2, 2005
          Local Time:
          5:36 PM
          Last time I had clutch chatter, it was a bent disc that was the cause.
           
        • dano

          dano Evil Handy Man

          Messages:
          3,312
          Likes Received:
          1194
          Joined:
          Aug 22, 2005
          Location:
          Gresham, Oregon
          Local Time:
          3:36 PM
          Bottom line if it's making contact you need to clearance it. I wouldn't trim the pressure plate.
           
          • Agree Agree x 2
          • Like Like x 1
          • 67Dart273

            67Dart273 FABO Gold Member FABO Gold Member

            Messages:
            44,981
            Likes Received:
            12564
            Joined:
            Oct 14, 2010
            Location:
            Idaho
            Local Time:
            3:36 PM
            ^THIS^ Flywheel / clutch turns at 7K, starter housing turns at 0 RPM. Trim the starter/ bell / whatever. Leave the rotating mass alone!!!
             
            • Agree Agree x 1
            • Ron816

              Ron816 Well-Known Member

              Messages:
              230
              Likes Received:
              147
              Joined:
              Nov 15, 2019
              Location:
              Quincy, MA
              Local Time:
              6:36 PM
              I j
              just pulled the clutch back out question is on the disk which side does the the hub goe flywheel or pressure plate?
               
            • toolmanmike

              toolmanmike FABO MODERATOR Staff Member FABO Gold Member

              Messages:
              52,767
              Likes Received:
              38275
              Joined:
              Jan 18, 2006
              Location:
              Iowa
              Local Time:
              5:36 PM
              Pressure plate. Flat side to the flywheel.
               
              • Agree Agree x 2
              • inertia

                inertia Well-Known Member

                Messages:
                3,323
                Likes Received:
                585
                Joined:
                Feb 4, 2011
                Location:
                Victoria B.C. Canada
                Local Time:
                3:36 PM
                The disc won't go in backwards, the flywheel bolt heads will interfere .

                Borg and Beck or Diaphragm design pressure plate ?
                If B&Beck, install and measure height to the three fingers/levers , they should be very, very close .
                 
              • Ron816

                Ron816 Well-Known Member

                Messages:
                230
                Likes Received:
                147
                Joined:
                Nov 15, 2019
                Location:
                Quincy, MA
                Local Time:
                6:36 PM
                Borg and Beck
                 
              • yellow rose

                yellow rose Master Of Insanity

                Messages:
                24,451
                Likes Received:
                20454
                Joined:
                Jun 19, 2015
                Location:
                Walking a crooked mile
                Local Time:
                3:36 PM
                LOL, the disc WILL go in backwards. Seen it many times.
                 
                • Agree Agree x 2
                • inertia

                  inertia Well-Known Member

                  Messages:
                  3,323
                  Likes Received:
                  585
                  Joined:
                  Feb 4, 2011
                  Location:
                  Victoria B.C. Canada
                  Local Time:
                  3:36 PM
                  Next time you get one - post a pic !
                  I'd really love to see it ! !

                  I knew I had you on "ignore" for good reason !
                   
                  • Agree Agree x 1
                  • Disagree Disagree x 1
                  • memike

                    memike Super Moderator Staff Member FABO Gold Member

                    Messages:
                    49,069
                    Likes Received:
                    11818
                    Joined:
                    Jan 8, 2006
                    Location:
                    on the hill
                    Local Time:
                    5:36 PM
                    I hammered a bell housing hard, cracked will let a clutch bounce
                     
                    • Like Like x 1
                    • AJ/FormS

                      AJ/FormS 68 B'cuda fb, Form S clone ... 367/A833/3.55s

                      Messages:
                      19,185
                      Likes Received:
                      7085
                      Joined:
                      Jan 19, 2014
                      Location:
                      South-Central Manitoba,Canada, 900ftelevation
                      Local Time:
                      5:36 PM
                      Mopars don't get wheel hop, or so they say.
                      Is your wheel-hop maybe telegraphing into your left foot?
                      Have you checked the spring-packs for a broken element?
                       
                    • rklein383

                      rklein383 Well-Known Member

                      Messages:
                      1,556
                      Likes Received:
                      471
                      Joined:
                      Dec 2, 2005
                      Local Time:
                      5:36 PM
                      Yep, been there, done that.
                       
                    • yellow rose

                      yellow rose Master Of Insanity

                      Messages:
                      24,451
                      Likes Received:
                      20454
                      Joined:
                      Jun 19, 2015
                      Location:
                      Walking a crooked mile
                      Local Time:
                      3:36 PM

                      Inertia says I’m stoopid because he says a disc can NOT be installed backwards.

                      Whatever.
                       
                    • yellow rose

                      yellow rose Master Of Insanity

                      Messages:
                      24,451
                      Likes Received:
                      20454
                      Joined:
                      Jun 19, 2015
                      Location:
                      Walking a crooked mile
                      Local Time:
                      3:36 PM

                      Yup, put me on ignore. I don’t have time for morons who say bullshit and get called on it and then still act the ass.
                       
                      • Like Like x 1
                      • CRUZE 418

                        CRUZE 418 FABO Gold Member FABO Gold Member

                        Messages:
                        274
                        Likes Received:
                        89
                        Joined:
                        Mar 11, 2019
                        Location:
                        Illinois
                        Local Time:
                        5:36 PM
                        Just asking, when you were installing the trans. did you stop to rest while the trans was partially in? You can damage the disc with the input shaft if you let the trans hang when partially in.
                         
                        • Agree Agree x 2
                        • 67Dart273

                          67Dart273 FABO Gold Member FABO Gold Member

                          Messages:
                          44,981
                          Likes Received:
                          12564
                          Joined:
                          Oct 14, 2010
                          Location:
                          Idaho
                          Local Time:
                          3:36 PM
                          I nearly mentioned this, but indirectly I guess I did.......
                           
                        • CRUZE 418

                          CRUZE 418 FABO Gold Member FABO Gold Member

                          Messages:
                          274
                          Likes Received:
                          89
                          Joined:
                          Mar 11, 2019
                          Location:
                          Illinois
                          Local Time:
                          5:36 PM
                          I mentioned this once before, do yourself a favor. Buy 2 long trans bolts say, 4 " or 5" , cut the heads off and screw them into the top two trans holes for guides when pushing the trans in. They just straighten things out. Easy install, and if you get tired, they will hold it while you recover.
                          Also, you did have a clutch alignment tool to center the disc?
                           
                          • Like Like x 1
                          • RustyRatRod

                            RustyRatRod Bla de blizhibliz de blatde blizi bla bla FABO Gold Member

                            Messages:
                            64,404
                            Likes Received:
                            37357
                            Joined:
                            Jun 7, 2010
                            Location:
                            Georgia
                            Local Time:
                            6:36 PM
                            He's right on this. When I replaced the clutch in my 64 Valiant after I first got it, I put the disc in backwards, because I was in the dark and wasn't paying attention. It will install backwards. I did it.
                             
                          • RustyRatRod

                            RustyRatRod Bla de blizhibliz de blatde blizi bla bla FABO Gold Member

                            Messages:
                            64,404
                            Likes Received:
                            37357
                            Joined:
                            Jun 7, 2010
                            Location:
                            Georgia
                            Local Time:
                            6:36 PM
                            Another thing that's a common cause of clutch chatter and shudder is grease or oil on the flywheel.
                             
                            • Agree Agree x 3
                            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.