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Frame Mounted T Case Insulator

Discussion in 'Early CJ5 and CJ6 Tech' started by todd hofsaess, Jan 8, 2022.

  1. Jan 8, 2022
    todd hofsaess

    todd hofsaess Member

    iowa
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    Where can I source the rubber frame mounted insulator for a d18? Thanks
     

    Attached Files:

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  2. Jan 8, 2022
    Twin2

    Twin2 not him 2022 Sponsor 2021 Sponsor 2020 Sponsor

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    4 cylinder motor mount
     
  3. Jan 8, 2022
    todd hofsaess

    todd hofsaess Member

    iowa
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    Perfect $2 on Rock auto. Thanks
     
  4. Jan 8, 2022
    Oldpappy

    Oldpappy A.C. Fults - Curmudgeon at large 2021 Sponsor

    East Tennessee
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    As Twin2 mentioned that is a motor mount, not a transfer case mount. There should be a rubber mount about 4" long under the transmission, and a round rubber insulator under the TCase.

    I bought a whole set including the motor mounts and transmission/Tcase mounts from QTM for a very reasonable price.
     
  5. Jan 8, 2022
    Fireball

    Fireball Well-Known Member 2022 Sponsor 2021 Sponsor 2020 Sponsor

    Pullman, WA
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    The V6's don't use the round mount. They have the shown F134 motor mount repurposed to mount to the frame on passenger side.

    EDIT: As noted below early V6's with the T86 still use the round mount. T14 V6s use a 4cyl engine mount on the frame.

    Here's a sort of picture from my '69. There is an L-bracket that bolts where the round mount in on the 4 cylinders and connects to an F134 motor mount bolted into the frame C-channel:
    [​IMG]
     
    Last edited: Jan 20, 2022
  6. Jan 8, 2022
    garage gnome

    garage gnome ECJ5 welder 2021 Sponsor 2020 Sponsor

    Western MA
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    The early v6 jeeps with T86 transmissions used the standard round transfer case mount. The later ones with a T14 used the 4 cyl. engine mount.
     
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  7. Jan 8, 2022
    Oldpappy

    Oldpappy A.C. Fults - Curmudgeon at large 2021 Sponsor

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    Learn something new everyday. The only V6 Jeeps I have owned have both been conversions from 4 Cylinder Jeeps and still had the round insulator.
     
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  8. Jan 8, 2022
    Fireball

    Fireball Well-Known Member 2022 Sponsor 2021 Sponsor 2020 Sponsor

    Pullman, WA
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    Good additional info.
     
  9. Jan 19, 2022
    dsthomas350

    dsthomas350 Member

    Winfield, IL
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    How timely that this was posted, I just put a brand new transmission crossmember with the round bushing on yesterday, nothing seemed right. Now I get it. The original mount to the frame was missing. Now I have a new crossmember freshly painted and new round bushing to sell! Thanks for this.
     
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  10. Jan 20, 2022
    Rick Whitson

    Rick Whitson Detroit Area 2022 Sponsor 2021 Sponsor 2020 Sponsor

    I live South of...
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    Now you got me thinking, I have got CRS, but I thought my 66 V6 donor Jeep had the round biscuit type with a "L' bracket moved back on the frame? like Fireball shows. My Wife says when you get old your brain gets too full and you forget a lot. Can't remember:poo:.
     
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  11. Jan 20, 2022
    Bob

    Bob Member 2021 Sponsor

    Northern California
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    Yeah, my ‘66 had the round mount too. It’s an original V6 Jeep and had the T86 originally. I never have seen the 4-cylinder engine mount style one.
     
  12. Jan 20, 2022
    Lockman

    Lockman OK.....Now I Get It . 2022 Sponsor 2021 Sponsor 2020 Sponsor

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    Love to read your knowledge , Gents. What does a D20 use ? ( I Know, I'll check my TSM )
     
  13. Jan 20, 2022
    givemethewillys

    givemethewillys Been here since sparky ran it. 2022 Sponsor 2021 Sponsor 2020 Sponsor

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    So the question is... which one is better? I modified my crossmember during my t18 swap to use the round mount, but I've yet to run it. I own both types though.

    I feel like I read somewhere on here about the ear snapping off on the d18.
     
  14. Jan 21, 2022
    dsthomas350

    dsthomas350 Member

    Winfield, IL
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    Upon further review, there is evidence of an old motor mount inside the frame rail about three inches forward of the transfer case mount!
     
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  15. Jan 21, 2022
    dsthomas350

    dsthomas350 Member

    Winfield, IL
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    Good question, the bracket to the motor mount seems a bit flimsy.
     
  16. Jan 21, 2022
    ITLKSEZ

    ITLKSEZ Hope for the best, prepare for the worst

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    In my opinion, I’d sooner run the frame-mounted motor mount over the crossmember-mounted bushing. I believe they saw what was happening and changed the design in the later years due to the V6’s soft motor mounts allowing everything to flex but the t-case, which would snap the flange on the D18. The added flexibility of the steel tab will prevent the destructive pressure points.
     
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  17. Jan 21, 2022
    Rich M.

    Rich M. Shoe salesman 2022 Sponsor

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    In a previous rendition I beat the crap out of my flatfender with a hot v6 and donut mounted D18 with no problem. T90 always gave up first... I thought they moved to the frame mount due to the drivetrain offset.
     
  18. Jan 21, 2022
    Steve's 70-5

    Steve's 70-5 Active Member 2020 Sponsor

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    Remember at this time Kaiser was using parts they had laying around, trying to make things work. I believe, from past threads here, the adding these mounts to the Trans. and T-Case was to stop that shimming while backing up. The stay cable was added too at some time.
     
  19. Jan 21, 2022
    timgr

    timgr We stand on the shoulders of giants. 2022 Sponsor 2021 Sponsor 2020 Sponsor

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    Probably won't be shown in your TSM. The 3-speeds use a mount like this -

    CJ3-speedmount.png

    The 4-speeds have an outboard mount that is different; probably covered in old posts. Nothing like the V6 mount.

    The 20 is different, having less torque on the outboard driveshaft(s) compared to the 18.
     
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