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T90 To T18 Swap

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

  1. Oct 17, 2022
    colojeepguy

    colojeepguy Colorado Springs

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    "cast iron" engine enamel.
     
    timsresort and dnb71R2 like this.
  2. Oct 17, 2022
    timsresort

    timsresort Active Member 2023 Sponsor 2022 Sponsor

    South Lake Tahoe CA
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    OK thanks. I'm about to pull the case out of my 3B to do some maintenance. I'll give it a try.
     
  3. Oct 17, 2022
    colojeepguy

    colojeepguy Colorado Springs

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    I don't normally paint stuff like that, but my son really wanted to. The cast iron paint was our compromise.
     
  4. Oct 23, 2022
    colojeepguy

    colojeepguy Colorado Springs

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    Ok, so it's been probably 20 years since I had to do this....what's the best way to determine lengths for my drive shafts?
     
  5. Oct 23, 2022
    Fireball

    Fireball Well-Known Member 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Pullman, WA
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  6. Oct 23, 2022
    colojeepguy

    colojeepguy Colorado Springs

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    For my next problem, the driveshaft is going to hit the y pipe :rolleyes:
    20221023_174922.jpg

    I'm really regretting ever starting this project
    :banghead:
     
  7. Oct 23, 2022
    Warloch

    Warloch Did you say Flattie??? Staff Member

    Falcon, CO
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    dnb71R2 and Fireball like this.
  8. Oct 23, 2022
    Rich M.

    Rich M. Shoe salesman 2024 Sponsor 2023 Sponsor 2022 Sponsor

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    Once you are done, the darkness of low gearing will consume you.
     
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  9. Oct 24, 2022
    dnb71R2

    dnb71R2 SuperDave 2023 Sponsor

    Grand Mesa, CO
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    Your passenger side exhaust looks to pass below the bell housing. A Waldron exhaust system will pass under the transmission, but still be just above the skid plate. That's what I have, with stock forward dump driver's manifold.
    1966-71 Jeep CJ-5 V6 225ci Single Exhaust – Waldron's Exhaust (waldronexhaust.com)
    Are those stainless bolts holding the transmission on? I'm not that familiar with the 2-hash head marking.
    And, for what it's worth, I had a pro driveshaft shop fab both my shafts and they said no need for long stroke since I only had a mild lift and no shackle reversal. They did, however, insist on heavier wall tubing than stock.
     
    Last edited: Oct 24, 2022
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  10. Oct 25, 2022
    colojeepguy

    colojeepguy Colorado Springs

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    Both driveshafts are at the driveshaft shop right now.
    That's what I was thinking about, but it'll require reworking the rest of the exhaust too.
    More $$$$$...
     
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  11. Oct 26, 2022
    termin8ed

    termin8ed I didn't do it Staff Member

    Mason, MI
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    Do you have the stock steering or Saginaw setup? Waiting for them to do a Saginaw y-pipe. That or buy a stainless one and cut and weld it
     
  12. Oct 26, 2022
    colojeepguy

    colojeepguy Colorado Springs

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    Mine is Saginaw.
     
  13. Oct 26, 2022
    colojeepguy

    colojeepguy Colorado Springs

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    One more piece of the puzzle today (well, actually 2 more!)
    Rear shaft shortened a couple of inches.
    My new front shaft is actually an extra rear shaft I had laying around, that I had re-tubed to work on the front.
    20221026_170252.jpg
     
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  14. Oct 26, 2022
    termin8ed

    termin8ed I didn't do it Staff Member

    Mason, MI
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    I have Saginaw too. I was curious what dnb has.

    I'm hoping to do the t18 swap too soon. Need a new exhaust because of multiple clearance issues the guy installing it created. Can't put a drawbar on, can't put my od on...
     
  15. Oct 26, 2022
    dnb71R2

    dnb71R2 SuperDave 2023 Sponsor

    Grand Mesa, CO
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    I have power Saginaw. The box is moved inboard about 4 inches so as to alleviate some of the common interference issues (mostly a PO effort). Yes, the engine support bracket had to be notched to clear the steering shaft.
     
    Last edited: Oct 28, 2022
  16. Nov 1, 2022
    colojeepguy

    colojeepguy Colorado Springs

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    Well, the trans is leaking between the case and the adapter. IDK how I ****ed that up but I guess it's coming back apart :banghead:
    Anybody want to buy a CJ5. cheap? :cry:
     
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  17. Nov 1, 2022
    dnb71R2

    dnb71R2 SuperDave 2023 Sponsor

    Grand Mesa, CO
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    At least you don't have to drop that heavy tranny!
    I had a similar frustration with my conversion. I installed a new parking brake drum and shoes. I had a weird vibration that I couldn't isolate immediately. I had the transfer case off and the parking brake off several times trying to figure it out. The new brake drum was out of balance to I just put the old one back on.

    HANG IN THERE DOUG...YOU'RE ALMOST THERE. (y)
     
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  18. Nov 1, 2022
    Jw60

    Jw60 Cool school 2024 Sponsor 2023 Sponsor 2022 Sponsor

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    How cheap is cheap? :drool;
     
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  19. Nov 1, 2022
    Rich M.

    Rich M. Shoe salesman 2024 Sponsor 2023 Sponsor 2022 Sponsor

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    :pickme: check the gaskets out well there are a few anomalies not all the available gaskets fit right.
     
  20. Nov 1, 2022
    colojeepguy

    colojeepguy Colorado Springs

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    That actually makes sense...I've been wondering how I could have f***ed that up.
    It's a gasket between 2 hunks of cast iron and I gave everything a nice coat of Right Stuff when I put it together...
     
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