What does the pinion snubber do ?

Suspension, Steering and Chassis

  1. Brooks James

    Brooks James VET, CPT, Huey Medevac Pilot FABO Gold Member

    Messages:
    1,879
    Likes Received:
    937
    Joined:
    Dec 12, 2020
    Location:
    Fruitland Park Fl
    Local Time:
    7:59 AM
    Its my understanding that when you launch a mopar leaf Springs car the car axle downward force is applied pressing the axle
    Down increasing the traction.
    , which means the snubber is Even further away from the floor pan ?
     
  2. krazykuda

    krazykuda Well-Known Member FABO Gold Member How-To Section Editor

    Messages:
    60,353
    Likes Received:
    26494
    Joined:
    Aug 20, 2007
    Location:
    Orland Park, IL
    Local Time:
    6:59 AM
    The pinion snubber snubs the opinions of others...
     
    • Agree Agree x 3
    • Like Like x 1
    • Brooks James

      Brooks James VET, CPT, Huey Medevac Pilot FABO Gold Member

      Messages:
      1,879
      Likes Received:
      937
      Joined:
      Dec 12, 2020
      Location:
      Fruitland Park Fl
      Local Time:
      7:59 AM
      Great pun !!
       
      • Thanks! Thanks! x 1
      • Agree Agree x 1
      • rumblefish360

        rumblefish360 I have escaped the evil Empire State! FABO Gold Member

        Messages:
        41,707
        Likes Received:
        13953
        Joined:
        Jun 21, 2005
        Location:
        Florida
        Local Time:
        7:59 AM
        No, as the tire rotates so does the axle in a motion bringing the snubber towards the floor pan. The leaf spring bends creating more of an arc pushing the tires down while the snubber stops the rear from rotating.
         
        • Agree Agree x 2
        • A56

          A56 MoPar Affliction

          Messages:
          5,373
          Likes Received:
          14164
          Joined:
          Jun 24, 2014
          Location:
          South of the Mason-Dixon Line
          Local Time:
          6:59 AM
          The pinion snubber and pumpkin does not rotate in the same direction as the tires under acceleration. It's trying to punch a hole in your floorboard under acceleration.
           
        • 33IMP

          33IMP Well-Known Member

          Messages:
          1,836
          Likes Received:
          1915
          Joined:
          Jul 3, 2020
          Location:
          Taxifornia, soon 2b arizona
          Local Time:
          4:59 AM
          In my case, on my car, not a damn thing.
           
          • Like Like x 2
          • 33IMP

            33IMP Well-Known Member

            Messages:
            1,836
            Likes Received:
            1915
            Joined:
            Jul 3, 2020
            Location:
            Taxifornia, soon 2b arizona
            Local Time:
            4:59 AM
            A rear-end does two things when power is applied. Due to engine rotation direction, the rear housing wants to rotate around the pinion gear, lifting the right rear tire, and planting the left rear. That's why an open rear will spin the right rear tire only unless something else changes the circumstances, such as a hard left turn, or a left donut.
            The other thing a rear does, it tries to lift the nose (pinion) to rotate around the ring gear. The pinion snubber is supposed to control that.
            I don't see how it can do anything. Most stock mopars, the snubber it a few inches away from the floor, so it doesn't bottom out the suspension over every little bump. So, it can't do anything.
            So they make adjustable snubbers, to get them up against the floor, for a hard launch. Only, in my experience, most mopars LIFT the body to plant the tires at launch, and the snubber is waving in the air again.
            My adjustable snubber is holding down papers in my garage, and my car is a few pounds lighter.
             
            • Like Like x 2
            • rumblefish360

              rumblefish360 I have escaped the evil Empire State! FABO Gold Member

              Messages:
              41,707
              Likes Received:
              13953
              Joined:
              Jun 21, 2005
              Location:
              Florida
              Local Time:
              7:59 AM
              Place the pinion snubber a 1/2 from the reenforced floor board where contact is made unless it is a manual transmission car in which it should be lightly touching.

              This is the starting tune point for a pinion snubber.
               
              • Like Like x 2
              • stroked340

                stroked340 FABO Gold Member FABO Gold Member

                Messages:
                4,536
                Likes Received:
                1587
                Joined:
                Jun 14, 2014
                Location:
                mass.
                Local Time:
                7:59 AM
                My pinion snubber helped my STREET car run low 1.40 60'..:p:p:p
                 
                • Like Like x 2
                • fishmens67

                  fishmens67 FABO Gold Member FABO Gold Member

                  Messages:
                  11,015
                  Likes Received:
                  10834
                  Joined:
                  Nov 10, 2012
                  Location:
                  idaho
                  Local Time:
                  6:59 AM
                  Clamp the front segment solid and remove the rear segment clamps.
                   
                  • Agree Agree x 4
                  • Like Like x 1
                  • Thanks! Thanks! x 1
                  • Brooks James

                    Brooks James VET, CPT, Huey Medevac Pilot FABO Gold Member

                    Messages:
                    1,879
                    Likes Received:
                    937
                    Joined:
                    Dec 12, 2020
                    Location:
                    Fruitland Park Fl
                    Local Time:
                    7:59 AM
                    If you are talkng about the Springs i already plan on that, thanks
                     
                    • Like Like x 1
                    • fishmens67

                      fishmens67 FABO Gold Member FABO Gold Member

                      Messages:
                      11,015
                      Likes Received:
                      10834
                      Joined:
                      Nov 10, 2012
                      Location:
                      idaho
                      Local Time:
                      6:59 AM
                      Well then why are you asking about the snubber. you won't need it
                       
                    • stroked340

                      stroked340 FABO Gold Member FABO Gold Member

                      Messages:
                      4,536
                      Likes Received:
                      1587
                      Joined:
                      Jun 14, 2014
                      Location:
                      mass.
                      Local Time:
                      7:59 AM
                      My springs are also clamped and use snubber!!
                       
                      • Like Like x 2
                      • Agree Agree x 1
                      • beanhead

                        beanhead Well-Known Member

                        Messages:
                        345
                        Likes Received:
                        415
                        Joined:
                        May 21, 2017
                        Location:
                        wackyfornia
                        Local Time:
                        4:59 AM
                        My B-bod never hooked better....once I took the snubber off. All the snubber did was cause the suspension to momentarily go 'solid' and then unload and spin the tires into oblivion.
                        The springs need to be free to try and lever the body upward in order to force the axle/tires downward (when things are working right). The snubber seemed to interfere with this action when I watched a slo-mo video of my car.
                         
                        • Agree Agree x 1
                        • Disagree Disagree x 1
                        • Brooks James

                          Brooks James VET, CPT, Huey Medevac Pilot FABO Gold Member

                          Messages:
                          1,879
                          Likes Received:
                          937
                          Joined:
                          Dec 12, 2020
                          Location:
                          Fruitland Park Fl
                          Local Time:
                          7:59 AM
                          Thats what I was Getting at in my original post, i cant see where it does anything for launching performance.
                           
                        • rumblefish360

                          rumblefish360 I have escaped the evil Empire State! FABO Gold Member

                          Messages:
                          41,707
                          Likes Received:
                          13953
                          Joined:
                          Jun 21, 2005
                          Location:
                          Florida
                          Local Time:
                          7:59 AM
                          If the front segments are clamped and the rear segments are free to separate, the need for a pinion snubber is greatly reduced but not zeroed out. A bit depends the space between parts. Ride height adjusted by lowering blocks, etc…
                           
                          • Like Like x 1
                          • Agree Agree x 1
                          • fishmens67

                            fishmens67 FABO Gold Member FABO Gold Member

                            Messages:
                            11,015
                            Likes Received:
                            10834
                            Joined:
                            Nov 10, 2012
                            Location:
                            idaho
                            Local Time:
                            6:59 AM
                            It was the rise helping with your traction, your snubber probably never contacted the floor.
                             
                            • Agree Agree x 2
                            • Like Like x 1
                            • rumblefish360

                              rumblefish360 I have escaped the evil Empire State! FABO Gold Member

                              Messages:
                              41,707
                              Likes Received:
                              13953
                              Joined:
                              Jun 21, 2005
                              Location:
                              Florida
                              Local Time:
                              7:59 AM
                              This device was designed decades ago for some serious racing and slicks on a well (then) developed race car.

                              Applying drag race parts to a car less than drag race status will always be an issue or cause one.
                               
                              • Like Like x 2
                              • Agree Agree x 1
                              • beanhead

                                beanhead Well-Known Member

                                Messages:
                                345
                                Likes Received:
                                415
                                Joined:
                                May 21, 2017
                                Location:
                                wackyfornia
                                Local Time:
                                4:59 AM
                                It did more good when I had about 450hp in the car....it cured a wheel-hop problem that would sometimes happen.
                                Once I started stepping up the power and suspension mods it became a hindrance. I've noticed none of the leaf spring cars at the track (that are worth a shit) are running them either.
                                 
                                • Like Like x 2
                                • mopowers

                                  mopowers Well-Known Member

                                  Messages:
                                  6,020
                                  Likes Received:
                                  3222
                                  Joined:
                                  Feb 15, 2006
                                  Location:
                                  West Sacramento, CA
                                  Local Time:
                                  4:59 AM
                                  All this thread does is prove that every situation is different. Some swear by snubbers, while some say they are door stops. Try one and if it doesn't improve your launch, toss it. It's not like it takes a week to install one or remove.
                                   
                                  • Agree Agree x 5
                                  • fishmens67

                                    fishmens67 FABO Gold Member FABO Gold Member

                                    Messages:
                                    11,015
                                    Likes Received:
                                    10834
                                    Joined:
                                    Nov 10, 2012
                                    Location:
                                    idaho
                                    Local Time:
                                    6:59 AM
                                    spot on :thumbsup: had the same experience with a max 63 Sport Fury.
                                     
                                    • Like Like x 1
                                    • Thanks! Thanks! x 1
                                    • RustyRatRod

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

                                      Messages:
                                      79,466
                                      Likes Received:
                                      57904
                                      Joined:
                                      Jun 7, 2010
                                      Location:
                                      Georgia
                                      Local Time:
                                      7:59 AM
                                      The pinion snubber takes advantage of the rotation of the axle housing. The housing rotates opposite of the wheels, because of the pinion gear. Under acceleration, the pinion gear tries to "climb" the ring gear. Since it cannot, it causes the housing to rotate. That rotation pushes the pinion snubber against the floor pushing the entire rear axle against the ground hard, raising the the rear of the car, while planting the tires. Depending which rear springs you run, the snubber may not even be necessary.
                                       
                                      • Agree Agree x 1
                                      • Syleng1

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

                                        Messages:
                                        2,377
                                        Likes Received:
                                        2050
                                        Joined:
                                        Jul 5, 2005
                                        Location:
                                        North Franklin, CT
                                        Local Time:
                                        7:59 AM
                                        It also made Direct Connection a lot of money in part sales. Back in the 80’s our local Chrysler Plymouth Dodge dealer sold a ton of them.
                                         
                                        • Like Like x 1
                                        • Agree Agree x 1
                                        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.