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  • clutch / PP / throwout noise

    A friend of mine (really) sent me this short video of an issue he's having with his 1931 Model A sedan. V8 type pressure plate. I don't know what kind of clutch disc he has. Mitch has the video and says he'll post it here for me. What's going on with this car?

  • #2


    3 ~ Tudor's
    Henry Ford said
    "It's all nuts and bolts"


    Mitch's Auto Service ctr

    Comment


    • DaWizard
      DaWizard commented
      Editing a comment
      Well, if you slow it down, you can tell that it is not a throw-out bearing noise because the bearing is running a long time before the noise is heard. What I would do is warm up the car a bit, just so it is not stone cold, pull the starter and hand crank start it and listen again with the starter out. What it sounds like to me is the ring gear or the flywheel is rubbing on the starter bolt. But that can be determined by setting up a mag base and dial indicator against the flywheel/ring gear and checking for run out.

      Slow it down to .5 and listen, you can barely hear the rubbing before the pedal is depressed, at least the engine noise is parallel to the sound when depressed.
      Last edited by DaWizard; 08-09-2017, 10:22 PM.

    • Mitch
      Mitch commented
      Editing a comment
      I agree with Wiz's assessment about the ring gear walking off and or starter bolts. Another thing he might check is the crankshaft end play, pushing the clutch in can move the flywheel / ring gear closer to the starter bolts. This noise should be relatively easy to find with a little investigation and removal of parts. Take a good look at the V-8 pressure plate fingers, i have had the pivot pins walk out as on certain brands they were held in by tiny snap rings a poor design.

  • #3
    Bruce is this a brand new install? was anything changed or worked on? a little back history may help
    3 ~ Tudor's
    Henry Ford said
    "It's all nuts and bolts"


    Mitch's Auto Service ctr

    Comment


    • #4
      Originally posted by Mitch View Post
      Bruce is this a brand new install? was anything changed or worked on? a little back history may help
      This engine with clutch, flywheel, PP and clutch disk has been in the car for about 8 years. Never a problem like this. Nothing has been changed since the install of a rebuilt engine etc. 8 years ago. I will see the owner today but not the car.

      Comment


      • #5
        Bruce any update on the noise?
        3 ~ Tudor's
        Henry Ford said
        "It's all nuts and bolts"


        Mitch's Auto Service ctr

        Comment


        • #6
          No update yet. Took the starter off and the noise persists. It's not a starter bolt hitting the flywheel/ring gear.

          Comment


          • #7
            So the problem has been solved. The ring gear had worked it's way forward on the flywheel. A few solid taps with a good sized hammer fixed the issue and got the ring gear back where it belongs. The car had a 6 volt starter and a 12 volt system. Starter was changed to a 12 volt unit some time ago.

            Comment


            • Mitch
              Mitch commented
              Editing a comment
              Thanks Bruce

          • #8
            Hey glad it is fixed, and thanks for the update!

            Comment


            • #9
              Had a similar noise with V8 clutch/pp on new build; it turned out to be one of the 3 fingers was out of adjustment as well as the 1" freeplay wasn't to spec causing the throwout bearing to chirp. Thanks Bruce for posting this, something to watch out for.

              Comment

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