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T90 To T18 Swap

Discussion in 'Early CJ5 and CJ6 Tech' started by colojeepguy, Aug 5, 2022.

  1. Feb 16, 2023
    Twin2

    Twin2 not him 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Virginia Beach, VA
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    I guess my floor cover was different T14
    but this is how it came out
    DSCN0750 - Copy.JPG

    DSCN0748 - Copy.JPG
    someday I would like to cut out section for twin shift . and make it removable

    DSCN0749 - Copy.JPG
     
    Fireball, 3b a runnin and melvinm like this.
  2. Feb 16, 2023
    Fireball

    Fireball Well-Known Member 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Pullman, WA
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    I mounted my transmission fairly high up in the Jeep to there was a lot of width sticking up through the floor. I not only sectioned an only sectioned the floor in length but also in width. I made my overdrive shifter mount high and in line with the transmission shifter which caused extra complications.

    Compared to stock:
    [​IMG]

    [​IMG]

    If I did it again, I think I would have skipped the factory style D18 twin stick setup and made a triple shifter with the OD/transfercase levers on one pivot using the original single stick transfer case front cover/shift rails.
     
    Last edited: Feb 16, 2023
    Danefraz, wheelie, melvinm and 2 others like this.
  3. Mar 5, 2023
    colojeepguy

    colojeepguy Colorado Springs

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    Trans tunnel finally finished today.
    20230305_125747.jpg

    20230305_114122.jpg
     
    melvinm, Danefraz, Fresbone and 14 others like this.
  4. Mar 5, 2023
    Fireball

    Fireball Well-Known Member 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Pullman, WA
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    Looks good! :bananatool:
     
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  5. Mar 5, 2023
    colojeepguy

    colojeepguy Colorado Springs

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    I also lined the underside of the Trans tunnel with this stuff.
    Not sure if that was a good idea but we'll see...
    20230305_144207.jpg
     
    3b a runnin, FinoCJ, Rich M. and 2 others like this.
  6. Mar 5, 2023
    vtxtasy

    vtxtasy oldbee 2024 Sponsor 2023 Sponsor

    Tucson, AZ
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    colojeepguy likes this.
  7. Mar 5, 2023
    FinoCJ

    FinoCJ 1970 CJ5 Staff Member

    Bozeman, MT
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    Well done!
     
    colojeepguy likes this.
  8. Mar 5, 2023
    melvinm

    melvinm Member

    Arvada Co. 80003
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    colojeepguy likes this.
  9. Mar 5, 2023
    vtxtasy

    vtxtasy oldbee 2024 Sponsor 2023 Sponsor

    Tucson, AZ
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    I used a big square boot for a Mack truck or something. Found a chrome trim ring from some truck stop retailer. This allowed the large shift tower of the SM420 plenty room to fit and move around. The cheap repop boots split just sitting there.
     
  10. Mar 5, 2023
    Fireball

    Fireball Well-Known Member 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Pullman, WA
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    Later I went with Stronghold vinyl boots https://www.strongholdshiftboots.com/. I had to use the sewing machine to resize a Dodge transfercase boot for the overdrive, but I really like how they turned out. Since it's all black, pictures don't really do them justice but they look really good:
    [​IMG]
     
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  11. Mar 5, 2023
    vtxtasy

    vtxtasy oldbee 2024 Sponsor 2023 Sponsor

    Tucson, AZ
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    002 boot.jpg That came out pretty slick. Do you remember which twin stick boot you used? They have a 72-75 and a 76-79. They both look the same and no dimensions are given.
    Yours looks like it would work well in 20230305_203151 resized.jpg my case.

    Updated with Stronghold boot. This has an SM420 for perspective.
     
    Last edited: Feb 9, 2024
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  12. Mar 5, 2023
    Fireball

    Fireball Well-Known Member 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Pullman, WA
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    Your setup looks clean.

    I bought the twin stick boots for vintage CJ twin sticks. It uses a round bezel. I bought a stock bezel and bent it to fit my custom floorboards:

     
    Last edited: Mar 5, 2023
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  13. Mar 5, 2023
    vtxtasy

    vtxtasy oldbee 2024 Sponsor 2023 Sponsor

    Tucson, AZ
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    Thanks. I wanted to keep the transmission tucked with no spacers on the cross-member. That should work as my set up is similar to yours.
     
    Fireball likes this.
  14. Jul 22, 2023
    colojeepguy

    colojeepguy Colorado Springs

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    Well I got the e brake hooked up this morning, which was the last thing to do for this swap. I can officially say it's done now, 11 months later. What a nightmare this project has been!
     
    3b a runnin, Rich M., Twin2 and 4 others like this.
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