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T90 To T18 Swap

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

  1. Aug 18, 2022
    Warloch

    Warloch Did you say Flattie??? Staff Member

    Falcon, CO
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    If you need help - I'm starting to be able to do things... Don't worry about asking - I can always show you and let you play with my toys in the shop.
     
    Glenn, jeepstar, blalp! and 4 others like this.
  2. Aug 20, 2022
    colojeepguy

    colojeepguy Colorado Springs

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    Parts are still rolling in...AA stuff arrived yesterday, tcase gasket kit and new clutch cable today. But still waiting for the clutch from Rock Auto, can't get far without it!
     
    Last edited: Aug 20, 2022
    blalp!, Fireball and Jw60 like this.
  3. Aug 25, 2022
    colojeepguy

    colojeepguy Colorado Springs

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    Haven't had much CJ time lately, but I took a few minutes this evening to hang the flywheel and clutch on the Dauntless. The new transmission shaft makes a dandy alignment tool!

    20220825_211141.jpg
     
    melvinm, Stakebed, Twin2 and 7 others like this.
  4. Aug 28, 2022
    colojeepguy

    colojeepguy Colorado Springs

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    The bearing puller I have is too short to use with this mile long input shaft. I'm thinking about cutting it, am I destroying anything of value? Is this some coveted part for a Jeep truck enthusiast?
    20220828_153326.jpg
     
  5. Aug 28, 2022
    FinoCJ

    FinoCJ 1970 CJ5 Staff Member

    Bozeman, MT
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    Cut it!
     
    Rich M. and colojeepguy like this.
  6. Aug 28, 2022
    nickmil

    nickmil In mothballs.

    Happy Valley, OR
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    If you have a good front bearing retainer to go with it it has good value. If all you have is the input shaft, not so much.
     
  7. Aug 28, 2022
    Fireball

    Fireball Well-Known Member 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Pullman, WA
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    Can you run some bolts through the splitter to just push against the case?
     
    ITLKSEZ likes this.
  8. Aug 28, 2022
    ITLKSEZ

    ITLKSEZ Hope for the best, prepare for the worst

    Spokane Valley, WA
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    I used to collect them. I was going to market my t18 kit to run behind a 134. I used the long input to machine the new input out of. I have a bin full of them somewhere.
    :confused:
     
    Fireball likes this.
  9. Aug 28, 2022
    Jw60

    Jw60 Space ranger 2024 Sponsor 2023 Sponsor 2022 Sponsor

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    I guess I didn't realize the shaft needed pulled off the bearing to disassemble the T-18.
     
    Last edited: Aug 28, 2022
  10. Aug 28, 2022
    colojeepguy

    colojeepguy Colorado Springs

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    Bearing retainer is broken :(
     
  11. Aug 28, 2022
    colojeepguy

    colojeepguy Colorado Springs

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    So, next problem - I got the trans apart, and the new input shaft is a different size than the old one where the synchro ring rides on it. Do I need a different shaft? Can I get a different ring to make this work? The old synchro ring seems quite thick...

    20220828_212513.jpg

    20220828_213209.jpg
     
  12. Aug 29, 2022
    Rich M.

    Rich M. Shoe salesman 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Maryland
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    IIRC correctly ( and I may not) since the short input is for Ford I seem to remember that you need the Ford version synchro. There's a couple quirks between the Ford and Jeep version.
    Every long input Jeep T18 I've worked on the long retainer was half worn through. Be sure to check your bellhousing for indexing. I had a Lakewood scatter shield that was massively out causing me throwout issues. Currently running an AA bell that has multiple patterns drilled in. It was very close and I had to dremel fit the retainer it was a little tight.
     
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  13. Aug 29, 2022
    Warloch

    Warloch Did you say Flattie??? Staff Member

    Falcon, CO
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    All I can tell you is there is a huge mess of T18s out there, and unless you know what it came from, its tough to match parts. I focused on the front retaining bearing part number to match what I used a that worked for me. Nick would be the best resource on this IMOP as he knows these "things" inside and out.
     
    colojeepguy likes this.
  14. Aug 29, 2022
    Jw60

    Jw60 Space ranger 2024 Sponsor 2023 Sponsor 2022 Sponsor

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    colojeepguy likes this.
  15. Aug 29, 2022
    Fireball

    Fireball Well-Known Member 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Pullman, WA
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    Also note there are two different thickness Ford input bearings and you need the one the matches your input shaft.
     
    3b a runnin and colojeepguy like this.
  16. Aug 29, 2022
    colojeepguy

    colojeepguy Colorado Springs

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  17. Aug 29, 2022
    Buildflycrash

    Buildflycrash More or Less in Line. 2024 Sponsor 2022 Sponsor

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    Mine was also a several weeks project. Did the YJ hanging pedals at the same time. Worth the effort.
     
  18. Aug 29, 2022
    3b a runnin

    3b a runnin Active Member 2023 Sponsor 2022 Sponsor

    virginia
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    I'm reading and watching here. I also have a Ford T18 on the workbench waiting on Novak parts, to swap out the T15.:waiting:
     
  19. Sep 4, 2022
    colojeepguy

    colojeepguy Colorado Springs

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    20220904_091151.jpg Synchro problem solved!
     
    melvinm, Rich M. and Jw60 like this.
  20. Sep 4, 2022
    colojeepguy

    colojeepguy Colorado Springs

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    Adapter plate installed
    20220904_073120.jpg
     
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