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Clunk in IRS - video

Discussion in 'Driveline' started by 04torchred, Mar 23, 2019.

  1. 04torchred

    04torchred Well-Known Member Established Member

    Messages:
    2,862
    Joined:
    Dec 9, 2004
    Location:
    Calgary AB Canada
    I mentioned in another thread how I developed a clunk while getting started from a dead stop or just clutch out and in on a flat surface, moving up my driveway, etc.

    I tried to replicate it with the wheels off yesterday to grab a video. With no load its silent. So I put the park brake on and lightly held the brake pedal as well.

    You can see the movement in my upper control arms. Diff bushings(aluminum from Bruce) are solid. My subframe does't appear to be moving it has the 14mm bolts.

    Control arm bushings are all stock, same with cross axis.

    Do you guys think my source of clunk is the control arms moving? I know with the brakes on its going to bind up some, but I imagine its doing a bit of that while trying to take off as well.

    Exhaust is loud but you can hear it clunk a few times. I have video from a few other angles as well.

     
  2. slo984now

    slo984now AKA 01yellerCobra Established Member

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    Joined:
    Oct 5, 2005
    Location:
    San Diego
    Just that movement alone would make me say you need control arm bushings. They could be the source of your clunk.
     
  3. Marvin97

    Marvin97 Member Established Member

    Messages:
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    Joined:
    Sep 20, 2009
    Location:
    Glasgow, Ky
    I had the same issue with mine. I put her up on jack stands, crawled under it with a pry bar and started prying on joints until i found it. Mine was the front diff mount is shot, its getting the complete full tilt boogie treatment as we speak
     
  4. 04torchred

    04torchred Well-Known Member Established Member

    Messages:
    2,862
    Joined:
    Dec 9, 2004
    Location:
    Calgary AB Canada
    You will like Bruce's diff bushings I like mine they hold the diff solid.

    I am still on the fence as to my noise source.

    Wondering if it could be my diff side gears? Stock half shaft CV joints wearing?
     

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