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t18 behind a f134?

Discussion in 'Early CJ5 and CJ6 Tech' started by twdjeepgod, Aug 28, 2005.

  1. twdjeepgod

    twdjeepgod New Member

    so, i have got a t18 out of a cj (short input shaft) i also have an extra bellhousing from a t90. if i machine an adapter can i bolt the t90 bellhousing to the t18 and use it with my f134?

    does this make sense? basically can i bolt up a bellhousing from a t90 to a t18 if i make an adpter? if so would i use the clutch, etc. from the t90? I also know that i need to use my d18 t/c but i am not worried about that part
    anone do this?

    thanks for any info
     
  2. timgr

    timgr We stand on the shoulders of giants. 2022 Sponsor

    The F134-T18 topic has been covered before... use the search.

    Basically you need to measure. Using a plate adapter requires that the stickout of the transmission be longer than the depth of the bellhousing. The pilot tip of the input shaft has to reach the pilot bushing in the end of the crankshaft with the plate adapter in place. You need to use a clutch that matches the splines of the input shaft (ie the T18). You also need to modify the pilot bushing or the pilot so that their diameter matches.
     
  3. twdjeepgod

    twdjeepgod New Member

    honestly, i did search. i am stupid and couldn't find anything. but thank you for info

    i will search again

    sorry


    searched still couldn't find anything
     
  4. timgr

    timgr We stand on the shoulders of giants. 2022 Sponsor

    No need to apologize. I recall reading about it recently. I'll take a look.
     
  5. timgr

    timgr We stand on the shoulders of giants. 2022 Sponsor

  6. Hawk62cj5

    Hawk62cj5 Captain of OldSchool

    I just bought a T-98 with the addapter plate if you need pics IM me
     
  7. kamel

    kamel Senior Curmudgeon

    Nobody makes the parts required to do this because 'everyone knows' that all 4 cylinder engines should be replaced with larger engines that don't have mufflers. Hence the adapters are all for larger engines.

    I have a F-4 t-98 and a I-6 t-18 input shaft that I'd like to take to a shop and tell them to machine the t-18 stickout dimensions to match the t-98. I haven't found a shop that is willing to tackle this yet, but then again, I haven't looked too hard either.

    Now, while the two shafts are almost identical, they are not interchangeable, but if the t-18 had the same stickout dimensions as the t-98 one ought to be able to put the 'new' t-18 shaft back into a t-18 and have a functioning unit since the changes would be to the stickout and not the gears or bearing surfaces themselves.

    You'd have to get a bearing retainer; archer brothers in california used to make them out of some aluminum and a t-90 bearing retainer. They tried to sell me a half completed one a month or two ago. I think that making the bearing retainer would be straightforward once you had the shaft.

    You'd also need to modify all the clutch linkage from the pedal to the fork, drive shafts, the floor transmission cover plate, and the transfer case levers.

    On the other hand, why would one need a 6.32 granny gear in a four cylinder jeep to begin with?
     
  8. timgr

    timgr We stand on the shoulders of giants. 2022 Sponsor

    Ok, I'll take that bait. :)

    I wouldn't word your statement quite that way - I'd replace "larger" with "more modern" and leave out the muffler part. I like quiet mufflers.

    Personally, I think it's a bit quixotic to try and mate the F134 with the T18. The main reason you'd keep the F134 is for the nostalgia, and replacing the T90 with a more modern, non-stock transmission while keeping the F134 seems a little, well, inconsistent. There are plenty of replacements for the F134 that will make your choice of transmission much wider using available adapters. Not neccessarily a bigger engine, but one with better performance, say the AMC/Jeep 150.
     
  9. Boyink

    Boyink Super Moderator Staff Member

    Same reason you'd want one with a bigger engine? ;)

    Actually seems like the granny gear could be more useful with a 4 cylinder engine - making up for lack of HP with better gearing.
     
  10. kamel

    kamel Senior Curmudgeon

    No bait.

    Re-read the last line of my previous post.

    I mostly agree with you.

    About the mufflers, I have yet to experience NOT hearing an engine in a jeep wherein the engine has been swapped for a larger engine.

    But then, I am more sensitive to noise pollution than most people.

    However, not everyone agrees, and that is what would make the t-18 installation interesting...

    I think a t-5 swap would be interesting too, but that was tried and discarded by Advance Adapters years ago.
     
  11. Boyink

    Boyink Super Moderator Staff Member

    Here....listen to SSDutch (4.3 Chevy swapped in).

    .
    .
    .
    .
    .
    .

    Wanna hear it again? ;)

    Single exhaust...traditional muffler...run all the way out the rear. Nice and quiet. There are some of us out there...;)
     
  12. jd7

    jd7 Sponsor

    I 've always liked that idea. Lower first gear than a T90 plus an overdrive for the F or L head, would be plenty adequate for that application.
     
  13. sparky

    sparky Sandgroper Staff Member Founder

    Seems like it'd be a nice swap to me too.
     
  14. twdjeepgod

    twdjeepgod New Member

    uhhhhh. . . yea, so anyway I was going to put a t18 in my jeep behind a f134. . . . :rofl:

    thanks for the info, i think? lol

    and no, i won't instal a t5 in anything! been there, done that!
     
  15. Hawk62cj5

    Hawk62cj5 Captain of OldSchool

    Aluminum gear box in a ECJ-5 , nahhhh R) . Whats the differance between the 18 and the 98 as far as the case goes?
     
  16. What ever became of this?
     
  17. shmober

    shmober Member

    Well I know an early iron duke with an adaptor will work with a T-18 I've done it. As far as a jeep with a larger engine goes, I have a 59 with a 289, fender well headders, and some kind of muffler, with what looks like 1 1/2" tail pipe. It very quite.
     
  18. 86cj7

    86cj7 New Member

    i know that he got everything to work, i think he machined an adapter between the tranny and bellhousing but i could be wrong. i also think he put dana18 gears in the dana 20
     
  19. oldtime

    oldtime oldtime

    If attempting to adapt the T-18 to a Willys 134 the selection of the maindrive gear (input shaft) is one of the main concerns.
    Ford T-18 is 1-1/16 " ten spline while Jeep T-18 is 1-1/8" ten spline.
    International Harvester T-18 is yet another yet more complex possability.
    This infers that the clutch must allow for something other than the Willys CJ standard of ten splines @ 15/16" diameter.
    If you install the optional 9-1/4" Auburn clutch you can potentially adapt the 134 to a T-18 via installing stock Willys (Borg Beck) driven disk.
    I'm specifically referring to the 9-1/4" driven disk that was used with certain (not all) Jeep Station Wagons.
    Those specific SW's are 226 Super Hurricane powered with T90 transmissions.
    They utilize the 9-1/4" Auburn clutch with Borg Beck driven dsk having 1-1/8" diameter ten spline.

    Now that only addresses the maindrive gear diameter.
    One must also address the "OAL" of the maindrive gear and the thickness of the bellhousing adapter.
     
  20. nickmil

    nickmil In mothballs.

    Hermtheoverdriveguy is working on a kit for this but not sure how close he is. Last I spoke to him about it he was close but not there yet. This was a bit ago. We were also working on a kit. It is the main drive that is part of the issue but also the front bearing retainer and front adapter. It's more complicated than it seems at first to make it all fit. We shelved it for a while to work on more saleable products until we have the extra time and money to re-visit it.