LOST JEEPS :: View topic - how hard to swap a transfer case

I'm tired of having only 4hi so I was looking at swapping the t-case
anybody try this or know how difficult it might be?

thanks

nope I do have 4low still
I just want 4full time - with the weather being as rainy as it has 4full would be nice. I might be able to get a t-case out of a broken down grand cherokee its a selec-trac NV242. It looks like a simple job but you never know.

hmm not encouraging news
is there a t-case I could swap out with the 4full mode that you know of?

I know of a couple of KJ's that just went to a junk yard so if theyre set up I may be able to get all the parts from them

Somebody did the swap of a KJ commandtrac to a kj selecttrac...I forget if it was here or kjcountry...so it has been done.

Blue KJ in PA wrote:

Somebody did the swap of a KJ commandtrac to a kj selecttrac...I forget if it was here or kjcountry...so it has been done.

I remember that,he kept getting a command-trac t-case labeled as a select-trac and I believe he gave up on it.

The Full Time case has had some failures. The Part Time case has had none. So some people have gone the other way around.

I personally LOVE my Full Time 4WD. Whenever it's raining or snowing, I just throw it into 4WD and drive with confidence.

AdamIsAdam wrote:

Actually, my 231 DID fail! I had been planing the swap for a couple years, but the reason that I finally quit procrastinating was because my command-trac crapped out! The NV/NP 242 is a very strong case & was used in the H1 Hummer... the big bad one that weighs ~6000 lbs, can climb 3 foot walls, 60 degree+ inclines etc...

I have no worries!

so would a 242 still fit or would I be changing half the drivetrain if I could find one of those?

To bad the 242J is not used in the H1,H1's get the special built 242AMG and uses 32 spline inputs and outputs compared to the KJ's 23spline input and 27 spline outputs(the 242J is a much weaker version).In '96+ H1's went to the 218AMG t-case which is a monster t-case with 32 spline input/outputs also.

tjkj2002 wrote:

Both the 231 I removed & the 242 I installed had 32 spilne output shafts. The WJ has a 27 spline shaft, but so does the WJ & XJ 231.

My point is, I don't think the 242 case is a weak case. Especially when comparing a KJ 231 & a KJ 242, I don't think one could say the 242 is weak & the 231 is strong... And no one can say the 231 does not fail, there is a busted 231 with only 70,000 miles on the floor of my garage!

Author:	KikensJeep [ Wed Jun 13, 2007 1:03 pm ]
Post subject:	how hard to swap a transfer case
I'm tired of having only 4hi so I was looking at swapping the t-case anybody try this or know how difficult it might be? thanks

Author:	tjkj2002 [ Wed Jun 13, 2007 1:39 pm ]
Post subject:	Re: how hard to swap a transfer case
KikensJeep wrote: I'm tired of having only 4hi so I was looking at swapping the t-case anybody try this or know how difficult it might be? thanks T-case go out? or will it not shift into 4-lo,need more info to helpout.By the way changing a t-case is not hard at all.

Author:	KikensJeep [ Wed Jun 13, 2007 2:10 pm ]
Post subject:
nope I do have 4low still I just want 4full time - with the weather being as rainy as it has 4full would be nice. I might be able to get a t-case out of a broken down grand cherokee its a selec-trac NV242. It looks like a simple job but you never know.

Author:	tjkj2002 [ Wed Jun 13, 2007 2:22 pm ]
Post subject:
KikensJeep wrote: nope I do have 4low still I just want 4full time - with the weather being as rainy as it has 4full would be nice. I might be able to get a t-case out of a broken down grand cherokee its a selec-trac NV242. It looks like a simple job but you never know. Going from a command trac to select-trac is very involved and pricy,new t-case,shifter and linkage,possible driveshafts(due to the 2 t-cases being different lengths),and not sure a Grand t-case will work with a KJ(may have different output spline counts,input splines should be the same,should be not 100% sure).

Author:	KikensJeep [ Wed Jun 13, 2007 2:35 pm ]
Post subject:
hmm not encouraging news is there a t-case I could swap out with the 4full mode that you know of? I know of a couple of KJ's that just went to a junk yard so if theyre set up I may be able to get all the parts from them

LOST JEEPS http://www.lostjeeps.com/forum/phpBB3/

how hard to swap a transfer case http://www.lostjeeps.com/forum/phpBB3/viewtopic.php?f=3&t=21601	Page 1 of 2

Author:	tjkj2002 [ Wed Jun 13, 2007 3:05 pm ]
Post subject:
KikensJeep wrote: hmm not encouraging news is there a t-case I could swap out with the 4full mode that you know of? I know of a couple of KJ's that just went to a junk yard so if theyre set up I may be able to get all the parts from them A KJ with a select-trac is the best bet.Just remember you need the shifter housing(and of course the shifter),linkage,t-case, and driveshafts(just to be safe).Just remember also your dash lights for 4-hi,4-full,and 4-lo will not operate correctly because the computer still thinks you have a command-trac t-case.

Author:	Blue KJ in PA [ Wed Jun 13, 2007 3:05 pm ]
Post subject:
Somebody did the swap of a KJ commandtrac to a kj selecttrac...I forget if it was here or kjcountry...so it has been done.

Author:	tjkj2002 [ Wed Jun 13, 2007 3:07 pm ]
Post subject:
Blue KJ in PA wrote: Somebody did the swap of a KJ commandtrac to a kj selecttrac...I forget if it was here or kjcountry...so it has been done. I remember that,he kept getting a command-trac t-case labeled as a select-trac and I believe he gave up on it.

Author:	Guest [ Wed Jun 13, 2007 4:12 pm ]
Post subject:
tjkj2002 wrote: Blue KJ in PA wrote: Somebody did the swap of a KJ commandtrac to a kj selecttrac...I forget if it was here or kjcountry...so it has been done. I remember that,he kept getting a command-trac t-case labeled as a select-trac and I believe he gave up on it. No, I didn't give up! It was successful & works great. A Grand Cherokee t-case might work, if you get a 27-spline slip yoke with it. The KJ has a 32-spline output shaft & slip yoke. I did a write up at KJ Country in the How-To section: http://www.jeepkj.com/forum/showthread.php?t=32339[/url]

Author:	AdamIsAdam [ Thu Jun 14, 2007 11:04 pm ]
Post subject:
The Full Time case has had some failures. The Part Time case has had none. So some people have gone the other way around. I personally LOVE my Full Time 4WD. Whenever it's raining or snowing, I just throw it into 4WD and drive with confidence.

Author:	humptyjumped [ Thu Jun 14, 2007 11:11 pm ]
Post subject:
I love commandtrak.... no complaints. just need a rear locker and my rig is done.

Author:	Guest [ Thu Jun 14, 2007 11:31 pm ]
Post subject:
AdamIsAdam wrote: The Full Time case has had some failures. The Part Time case has had none. So some people have gone the other way around. I personally LOVE my Full Time 4WD. Whenever it's raining or snowing, I just throw it into 4WD and drive with confidence. Actually, my 231 DID fail! I had been planing the swap for a couple years, but the reason that I finally quit procrastinating was because my command-trac crapped out! The NV/NP 242 is a very strong case & was used in the H1 Hummer... the big bad one that weighs ~6000 lbs, can climb 3 foot walls, 60 degree+ inclines etc... I have no worries!

Author:	tjkj2002 [ Fri Jun 15, 2007 9:21 am ]
Post subject:
KJpilot wrote: AdamIsAdam wrote: The Full Time case has had some failures. The Part Time case has had none. So some people have gone the other way around. I personally LOVE my Full Time 4WD. Whenever it's raining or snowing, I just throw it into 4WD and drive with confidence. Actually, my 231 DID fail! I had been planing the swap for a couple years, but the reason that I finally quit procrastinating was because my command-trac crapped out! The NV/NP 242 is a very strong case & was used in the H1 Hummer... the big bad one that weighs ~6000 lbs, can climb 3 foot walls, 60 degree+ inclines etc... I have no worries! To bad the 242J is not used in the H1,H1's get the special built 242AMG and uses 32 spline inputs and outputs compared to the KJ's 23spline input and 27 spline outputs(the 242J is a much weaker version).In '96+ H1's went to the 218AMG t-case which is a monster t-case with 32 spline input/outputs also.

Author:	KikensJeep [ Fri Jun 15, 2007 10:03 am ]
Post subject:
so would a 242 still fit or would I be changing half the drivetrain if I could find one of those?

Author:	Guest [ Mon Jun 18, 2007 9:45 pm ]
Post subject:
I just ran out & checked, & It is a 242J. But I agree with you that there are going to be differences between cases with the same number, I am not arguing against that. Me & my KJ are currently in Cincinnati, so I can't check my WJ 242 part tag to see if it is a 242J, but I think it is, & it has a 27-spline output shaft. Like I said before the argument I am making is that the 242 is not a weak t-case as compared to the 231, and just like any piece of mechanical equipment, the 231 can & does fail.

Page 1 of 2	All times are UTC - 5 hours [ DST ]
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group http://www.phpbb.com/

Author:	tjkj2002 [ Fri Jun 15, 2007 10:29 am ]
Post subject:
KikensJeep wrote: so would a 242 still fit or would I be changing half the drivetrain if I could find one of those? Sorry I got the #'s mixed up,the 242J is available in the KJ,but is a weaker version using 23spline inputs and 27 spline outputs.The 242AMG is a special built version for the H1's using 32slpine in/outputs and was only used till '95 then H1'a went to a much beefier 218AMG t-case.There are different version of the same t-case alot and made for different apps,they may have the same # but are much weaker/stronger depending on the application is was intended for.The 231J(or HD is offered) is a much stronger t-csae then the 242J t-case just you don't get fulltime 4x4 option.

Author:	KikensJeep [ Fri Jun 15, 2007 11:32 am ]
Post subject:
so what would be the best recommendation transfer case wise to add to a a much beefier mod in the future the cough cough mod not sure I'll do that mod it depends on funds but as long as were swapping major parts out I figure a beefier transfer case would be a good addition - and I would like 4full

Author:	humptyjumped [ Fri Jun 15, 2007 6:13 pm ]
Post subject:
Excuse my ignorence, but wouldn't you have to put a diff in the front as well?

Author:	Guest [ Mon Jun 18, 2007 3:49 pm ]
Post subject:
tjkj2002 wrote: To bad the 242J is not used in the H1,H1's get the special built 242AMG and uses 32 spline inputs and outputs compared to the KJ's 23spline input and 27 spline outputs(the 242J is a much weaker version).In '96+ H1's went to the 218AMG t-case which is a monster t-case with 32 spline input/outputs also. Both the 231 I removed & the 242 I installed had 32 spilne output shafts. The WJ has a 27 spline shaft, but so does the WJ & XJ 231. My point is, I don't think the 242 case is a weak case. Especially when comparing a KJ 231 & a KJ 242, I don't think one could say the 242 is weak & the 231 is strong... And no one can say the 231 does not fail, there is a busted 231 with only 70,000 miles on the floor of my garage!

Author:	tjkj2002 [ Mon Jun 18, 2007 8:37 pm ]
Post subject:
KJpilot wrote: tjkj2002 wrote: To bad the 242J is not used in the H1,H1's get the special built 242AMG and uses 32 spline inputs and outputs compared to the KJ's 23spline input and 27 spline outputs(the 242J is a much weaker version).In '96+ H1's went to the 218AMG t-case which is a monster t-case with 32 spline input/outputs also. Both the 231 I removed & the 242 I installed had 32 spilne output shafts. The WJ has a 27 spline shaft, but so does the WJ & XJ 231. My point is, I don't think the 242 case is a weak case. Especially when comparing a KJ 231 & a KJ 242, I don't think one could say the 242 is weak & the 231 is strong... And no one can say the 231 does not fail, there is a busted 231 with only 70,000 miles on the floor of my garage! Then you didn't get a 242J.There are many versions of the same t-cases,some are HD versions.The 231 has a HD version.Look at the 241 t-case,made for 3/4-1 ton GM and Dodge pickups is the same t-case as in the Rubicons,but the 241 in the Rubicons have the 4:1 low and a wider chain making it much stronger than a regular 241.