Thread: ZJ 231 Swap

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  1. #26 Re: ZJ 231 Swap 
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    Quote Originally Posted by MaineZJ

    How'd you fix this?

    Grabbed a yoke that would fit the double cardan joint. Try a tranny shop or a junkyard and just pull one from a rig that has a 231 and double cardan front shaft.
     

  2. #27  
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    got a 89YJ 231
    XJ front output yoke
    bought a new shift tab
    made a new long linkage for the shifter

    and it all works.


    one question - do 231s typically grind a bit coming out of Lo? not completely sure I put the thing back to together correct (specifically the syncronizer collar (shift ring))
     

  3. #28  
    Senior Member Swamp boy's Avatar
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    Robselina.. I just moved my axle back about 2.5" or so..(something like that..) when I installed the 231 it gave me all the room I needed to clear the drive shaft.. and it was alot cheaper than shortening the shaft..

    Maine.. I dont have any grinding with mine.. It shifts very smoothly ..
    Essen Sie den Schinken Sie dummer Llama...


    93 ZJ cut to hell and crap welded on...


     

  4. #29  
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    ok this may be a dumb question but noone mentioned it.... if i plan on putting an sye in the 231 before i install it, do i need a new rear drive shaft?
    94 ZJ 4.0L
    3.5" RE lift
    1" spacers
    231 swap
    33-10.5 TSL radials
    tomken rear bumper with tire carrier
    claytons original pinch seam mounted rock rails
    ARB bull bar
     

  5. #30  
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    ok this may be a dumb question but noone mentioned it.... if i plan on putting an sye in the 231 before i install it, do i need a new rear drive shaft?
    Do you know what a SYE is? Or do you just want one because you hear people talking about them? A Slip-Yoke Elminator elminates the slip yoke of the stock transfercase. Making the T Case shorter and with a bolt up yoke like the front drive shaft. This requires the slip yoke to be put in the drive shaft (like the front shaft). So yes you will need a new driveshaft with any SYE on an vehicle.
     

  6. #31  
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    Welded the VC??? How did that work?? Seem to me like a good idea? I'd like to hear more!


    Dave
    96 ZJ,Pro Comp springs,2" spacers,31's, ES3000's, electric fan, electric idle control, K&N, RaVin muffler,TransGo, Yakima Roof Rack.
     

  7. #32 Re: ZJ 231 Swap 
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    Somewhere I saw a write up similar to this but with the 242 case. Has anybody seen that done? I think that is a better option for me as I live in New England and would still like to have the full-time option in the winter but don't need it in the summer.....

    -Rock
     

  8. #33 Re: ZJ 231 Swap 
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    Quote Originally Posted by RockTech4X4
    Somewhere I saw a write up similar to this but with the 242 case. Has anybody seen that done? I think that is a better option for me as I live in New England and would still like to have the full-time option in the winter but don't need it in the summer.....

    -Rock
    Swapping in a 242 isn't much different at all than the 231.
     

  9. #34 Re: ZJ 231 Swap 
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    Quote Originally Posted by BigDaveZJ
    Swapping in a 242 isn't much different at all than the 231.
    Just keep in mind how much weaker it is, or am I remembering that torque chart wrong? I think the 242 was pretty much the weakest New Venture had made, but having all the options is nice.
     

  10. #35 Re: ZJ 231 Swap 
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    Quote Originally Posted by OverkillZJ
    Just keep in mind how much weaker it is, or am I remembering that torque chart wrong? I think the 242 was pretty much the weakest New Venture had made, but having all the options is nice.
    Yeah but I use my ZJ more on the road then off. I have a 70 mile commute everyday and I really like the idea of keeping the fulltime option.
     

  11. #36 Re: ZJ 231 Swap 
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    Quote Originally Posted by OverkillZJ
    Just keep in mind how much weaker it is, or am I remembering that torque chart wrong? I think the 242 was pretty much the weakest New Venture had made, but having all the options is nice.
    The 242 is stronger.

    NV naming:
    first number = # of speeds

    second number = strength (1-9 with 9 being strongest)

    third number = type of coupling...(part time, full time, etc.)

    so a 231 is weaker than a 242 which is weaker than a 271
    83 Scrambler, d60, 14bolt, ZJ 318. Yeah Yeah, it's a pile of parts, but someday...

    68 Commando on 32's for wheeling
     

  12. #37 Re: ZJ 231 Swap 
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    I know the naming convetion, but actual results appear to be different according to their own specs:

    NV 242: 1486
    NV 231: 1885

    That's ft lbs

    chart is at http://www.newventuregear.com/tcases.html

    EDIT: but notice the 242HD is a lil' stronger than the 231HD
    Last edited by OverkillZJ; 10-02-2005 at 02:42 PM.
     

  13. #38 Re: ZJ 231 Swap 
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    Hey all, I'm finally gettin ready to swap in a 231. I've been rereading all the swap write ups and posts I can find (I planned on doing this a year ago but ran out of money). For some reason, at the time, I knew I didn't have to worry about rear driveshaft length. Now I don't know what my reasoning was.
    I'm lifted about 4.5" and the axle is moved back about 1.5", but I'm thinkin the driveshaft might still be alittle long. I can't move the axle any more without running into the gas tank skid. If I have to spend any more money on this thing I'm gonna vomit (pay to shorten driveshaft). The 231 I've got on the way is a newer one with the short tail cone. So my question is...Can I hack an inch or so off the rear output shaft if I need to with out running into any problems?
     

  14. #39 Re: ZJ 231 Swap 
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    I found a 231 from a 4.0ltr auto ZJ in a local salvage yard...Question is should I seek out a TJ or XJ case or would this one work? I think the truck was a 94....

    -Rock
     

  15. #40 Re: ZJ 231 Swap 
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    Quote Originally Posted by RockTech4X4
    I found a 231 from a 4.0ltr auto ZJ in a local salvage yard...Question is should I seek out a TJ or XJ case or would this one work? I think the truck was a 94....

    -Rock
    No that one is no good, why not pick it up and send it to me so your not tempted to use it
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  16. #41 Re: ZJ 231 Swap 
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    Quote Originally Posted by zjoe
    If I have to spend any more money on this thing I'm gonna vomit (pay to shorten driveshaft).
    a.) you might want to find a new hobby. Like needlework.

    Quote Originally Posted by zjoe
    Can I hack an inch or so off the rear output shaft if I need to with out running into any problems?
    b.) Even if you could do it without f-ing up the splines it still isn't a great idea. Afroengineering is a bad idea when it comes to drivetrain components.
    Ban Cowboy63b Fan Club Member #1
     

  17. #42 Re: ZJ 231 Swap 
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    Quote Originally Posted by Puma297
    a.) you might want to find a new hobby. Like needlework.



    b.) Even if you could do it without f-ing up the splines it still isn't a great idea. Afroengineering is a bad idea when it comes to drivetrain components.
    I agree, x2
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  18. #43 Re: ZJ 231 Swap 
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    needle work I can probably afford. I might become a hobby lobby thief.
    That was like two months ago...I ended up buying a driveshaft instead of cutting the output shaft.
    I still haven't put anything together though
     

  19. #44 Re: ZJ 231 Swap 
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    Yea I did the same swap a while back and not had any problems at all. I also did the SYE at the same time... I did not want to go the hack and tap route.
    Also had new drive shafts made by R.E.Reel at the same time as well. I used an tcase from a TJ...did not have to swap out the input shafts. here is a link if you want a few more pictures. Hope this helps. later...clint

    http://www.mallcrawlin.com/forum/showthread.php?t=3868
    LOST ZJ
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  20. #45 Re: ZJ 231 Swap 
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    Hey all havent posted much here but I am about to perform this surgery myself except im going to be transplanting a 242. Anyways someone was asking about a 242 write up so I thought I would provide it. It even comes with a burn out pic at the end. Enjoy.

    http://jeephorizons.com/tech/tcase.html
     

  21. #46 Re: ZJ 231 Swap 
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    I just picked up my 231 yesterday and the owner had to keep the speedo gear housing for his Atlas, will the one from my 249 just plug right in??
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  22. #47 Re: ZJ 231 Swap 
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    Quote Originally Posted by Cue-Ball
    I just picked up my 231 yesterday and the owner had to keep the speedo gear housing for his Atlas, will the one from my 249 just plug right in??
    SHOULDN'T be a problem.
     

  23. #48 Re: ZJ 231 Swap 
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    Thanks Dave.
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  24. #49 Re: ZJ 231 Swap 
    quick question i dont have the 249 out and worked on one yet, but i was wondering do u remove the input gear from removeing those bolts in the front of the case where it attaches to the tranny and sliding the input gear assembly forward? or do pop the entire thing apart and get it from that way?
     

  25. #50 Re: ZJ 231 Swap 
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    Quote Originally Posted by steves88vb
    quick question i dont have the 249 out and worked on one yet, but i was wondering do u remove the input gear from removeing those bolts in the front of the case where it attaches to the tranny and sliding the input gear assembly forward? or do pop the entire thing apart and get it from that way?
    You have to split the case to get ANY internals out of it.....anything that's not bolted to the outside....is internal.
    5.9 ZJ With stuff attached
    It's true that I'm old enough to have been there done that.....it doesn't make me an expert...it just gives me an educated opinion.
     

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