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Insulator Shim

Discussion in 'Early CJ5 and CJ6 Tech' started by Fresbone, Sep 30, 2022.

  1. Sep 30, 2022
    Fresbone

    Fresbone Member 2022 Sponsor

    Fresno, California
    Joined:
    Jul 29, 2022
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    70
    I am sorting out the random bolts and screws in my jeep. The manual indicates that the body is insulated from the frame with insulating shims. The only insulating shim I can find is a steel plate for near the engine. I was expecting to find a rubber bushing or something like I have in my F250. I searched the forum and couldn’t find anything specific.
    Thoughts?
     
  2. Sep 30, 2022
    dnb5853

    dnb5853 Member 2021 Sponsor

    Grand Mesa, CO
    Joined:
    Aug 13, 2006
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    940
    My '71 was close to original when I bought it. I had a few reinforced fabric shims when I replaced my body mounts with rubber bushings. I'm guessing these fabric shims are the insulation (isolation) shims you have referenced. Most were worn out or just on the edge of disintegration.
    The new rubber or polyurethane bushings are superior to anything Jeep originally used.
    I just installed the new bushings with new hardware and it's been fine.
     
    Last edited: Sep 30, 2022
    Fresbone likes this.
  3. Sep 30, 2022
    Howard Eisenhauer

    Howard Eisenhauer Super Moderator Staff Member

    Tantallon, Nova...
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    Nov 22, 2003
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    7,651
    Insulating as in vibration/ movement reduction, not as in electrical insulation.
     
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  4. Sep 30, 2022
    boopiejones

    boopiejones I can’t drive 55

    California east bay
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    Mar 16, 2020
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    481
    Not sure how original mine was, but it had very thin square shims (about 1/8” thick) that looked like thin tire sidewall material. I replaced them with 1/2” thick urethane puck spacers and the ride quality improved significantly. Also made the Jeep a lot quieter too - significantly less rattling.
     
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  5. Sep 30, 2022
    47v6

    47v6 junk wrecker! 2022 Sponsor 2021 Sponsor 2020 Sponsor

    USA
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    Oct 25, 2006
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    I have seen shims that look like old fire hose material.
     
  6. Sep 30, 2022
    Cj5dale

    Cj5dale Member 2022 Sponsor

    Knoxville, Tn
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    Aug 19, 2021
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    Here’s some pics of one from my ‘70 cj5. They appear to be some sort of rubber material

    upload_2022-9-30_16-43-50.jpeg
    upload_2022-9-30_16-44-15.jpeg
    upload_2022-9-30_16-44-39.jpeg
    upload_2022-9-30_16-44-58.jpeg
     
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  7. Sep 30, 2022
    PeteL

    PeteL If it wasn't for physics, and law enforcement... 2022 Sponsor 2021 Sponsor 2020 Sponsor

    Hills of NH
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    Aug 3, 2003
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    And strangely enough, tire material works just fine, in my experience.

    Coincidence?? I think not.
     
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  8. Sep 30, 2022
    FinoCJ

    FinoCJ 1970 CJ5 Staff Member 2021 Sponsor 2020 Sponsor

    Bozeman, MT
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  9. Oct 1, 2022
    Keys5a

    Keys5a Sponsor

    Florida Keys
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    My original pads on both ‘65 Tux and ‘66 CJ5 are the same size and material as in post#6, except were closer to 1/4”-5/16” thick.
    -Donny
     
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