Transfer Case Swap Info NP249->NP231 & NP242 - Page 133 - JeepForum.com

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post #1981 of 3109 Old 01-29-2014, 04:13 PM
Myusername1674
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Quote:
Originally Posted by MurdaJs View Post
The 46rh you '95ers have is physically longer than the 44re and 42re, plus the dana35 vs 44a arent exactly the same so its hard to apply what us 96-98ers have done to your setup. So id measure your current shaft and maybe youll get lucky and find a suitable donor a the jy for the length you need. A jy driveshaft shouldnt be more than 25 bucks, but its hard to find one that isnt fubar from the forklifts. Shortening your current ds should be about $100 at a driveline shop

Something to remember is the fact that the t cases are pretty much the same size, the differences in overall t case length is determined by the rear output. Internal slip yoke is about 1.5" shorter than external slip yoke.
If you do shorten it, make sure you check local shops first, you can find a better price thiw way. Mine was only $50 to shorten and balance, they did good clean work too


95 FiveTwo ZJ, DD, Lifted, Locked on 35s, Build (in progress)

My 5.9 swap (in progress)

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post #1982 of 3109 Old 01-29-2014, 04:24 PM
ZJNewbi3
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Quote:
Originally Posted by MurdaJs View Post
Something to remember is the fact that the t cases are pretty much the same size, the differences in overall t case length is determined by the rear output. Internal slip yoke is about 1.5" shorter than external slip yoke.
So, if I have an external slip yoke, and get a 242 with the same (if possible) I wouldn't really have to shorten anything? But the write up does say that an internal is better cause its bathed in ATF+4.

I'll prob write down the measurements of my drive shafts and take em to the yard and check if they match with the donor. Does Haynes manual explain how to properly measure the shafts?

Just trying to keep her goin'!!
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post #1983 of 3109 Old 02-05-2014, 12:35 PM
bjorn17
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Need a bit of clarification. In the first post it was mentioned that you can use a new gear cut 242 and mate it with an old gear cut 249, but can you do vica versa?

I am thinking of getting a 242 from an XJ 1993 and putting it under my ZJ 1996 with 249. Can I make the swap (using both cases for parts ofcourse, no direct fit, different length shafts)
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post #1984 of 3109 Old 02-05-2014, 12:38 PM
SWVATrails
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I've found a donor 242 to swap for my 249 in a 1995 Zj 4.0, would this be a exact swap or is the shaft and spline count different since it's a different tcase? I would assume it's the same considering it came out of a 95 Zj which is the same as mine
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post #1985 of 3109 Old 02-06-2014, 09:53 AM
Myusername1674
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Quote:
Originally Posted by bjorn17 View Post
Need a bit of clarification. In the first post it was mentioned that you can use a new gear cut 242 and mate it with an old gear cut 249, but can you do vica versa?

I am thinking of getting a 242 from an XJ 1993 and putting it under my ZJ 1996 with 249. Can I make the swap (using both cases for parts ofcourse, no direct fit, different length shafts)
I think you can do the case half swap, where you use the back of the 249 that you currently have, and swap the rest from your new to you 242. That may be right, but I've never done this so you'll want to look into this more before doing it.

Quote:
Originally Posted by SWVATrails View Post
I've found a donor 242 to swap for my 249 in a 1995 Zj 4.0, would this be a exact swap or is the shaft and spline count different since it's a different tcase? I would assume it's the same considering it came out of a 95 Zj which is the same as mine
It should be the same, though it is hard to say without pulling both cases and comparing the size of the input shafts. If they're different sizes you could swap inputs (a pretty easy job with basic mechanic skills), but this also depends when the two jeeps were actually manufactured. MY 95 was manufactured oct. 1994, so it got the later gear cut. If either one was from the earlier part of the 1994 year it could very well have the early gear cut. Spline count and all should be the same though. I think, I'm no expert so maybe an expert on this will help you out better.

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My 5.9 swap (in progress)

Want your zj to be doorless in 60 seconds?
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post #1986 of 3109 Old 02-09-2014, 08:08 PM
redfox103
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97 zj

is there a tcase that will need no swapping of shafts done for a 97 zj?
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post #1987 of 3109 Old 02-09-2014, 08:20 PM
ejschultz
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Quote:
Originally Posted by redfox103 View Post
is there a tcase that will need no swapping of shafts done for a 97 zj?
It's a crap shoot. Regardless of donor vehicle and your vehicle, you may or may not need to shorten the shaft. Some people on here get away without modifying it at all. Others, myself included, needed to shorten their stock shaft. I guess my shaft was just too long.

97 ZJ - 5.2L, 242, 4" IRO lift w/short arms & adj. TBs, JKS Discos/BPEs, DT3000s, Aussie'd 44A, sliders, bumpers, bunch o' skids, 31" Duratracs on 15x8s
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post #1988 of 3109 Old 02-10-2014, 01:59 AM
MurdaJs
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Quote:
Originally Posted by redfox103 View Post
is there a tcase that will need no swapping of shafts done for a 97 zj?
Input shafts from any zj or xj 96+ 242 or 231 should be the same.

Driveshafts are another story. 249,242, and 231 are all really close. The rear output slipyoke is where the difference is. Exposed slip yoke is about 1.5 inches longer overall than a tcase with an internal slip yoke.

A 242 or 231 from a 96+ zj or xj is probably external slip yoke, so in theory your driveshaft MAY be too long. Some people say they didnt need to shorten it, some have had to.
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post #1989 of 3109 Old 02-12-2014, 12:55 PM
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Hi guys,

I recently bought Grand Cherokee ZJ, 5.2 V8, 1996, with 242 transfer case installed. When I checked the oil level in the transfer case it was almost dry. Next I filled needed oil level and after short drive most of oil went out.
Starting to look the reason, I discovered that the rear shaft seal is not connected with the shaft tight.

Red circle shows that thicker part after the bearing is too deep and seal can not reach it. Seal stays in thinner area of the shaft, and oil goes out.


More pictures from my 242



Here I found 242 picture from internet


Here I see that shaft thick part (marked red) is much longer and going out from enclosure.

I think there are different parts collected together and shaft is from other transfer case, or some self made mixture is done.
Transfer case itself working and all positions as well, under the load strange noise comeing from somewere, but I`m not sure from where.

I try to find solution how to keep oil inside, because original seal is not working.

Maybe you guys here can tell what has been done with my transfer case and what could be the best solution to fix it.

Thanks!
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post #1990 of 3109 Old 02-15-2014, 08:14 PM
Karthikdsri86
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Hi all, i am getting ready to do a 249 to 231 swap in my 98 5.9L. I found a 231 from a 96 XJ that I believe was manufactured on 12/95 as per tag. Q1. Most of my searches tell me that the input shaft for this 231 is 0.75 inches but I think I am reading 0.84 in. Do you agree looking at the pic? Q2. The 249 i currently have will most probably have a 0.84 in input, right? Which could potentially mean a direct swap? Please humor my questions due to my in experience with such jobs. Thanks.
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post #1991 of 3109 Old 02-15-2014, 09:08 PM
MurdaJs
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Looks like .840 to me, should go right in
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post #1992 of 3109 Old 02-16-2014, 09:47 AM
Myusername1674
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Quote:
Originally Posted by Karthikdsri86 View Post
Hi all, i am getting ready to do a 249 to 231 swap in my 98 5.9L. I found a 231 from a 96 XJ that I believe was manufactured on 12/95 as per tag. Q1. Most of my searches tell me that the input shaft for this 231 is 0.75 inches but I think I am reading 0.84 in. Do you agree looking at the pic? Q2. The 249 i currently have will most probably have a 0.84 in input, right? Which could potentially mean a direct swap? Please humor my questions due to my in experience with such jobs. Thanks.
I'm thinking your 249 is going to have a longer shaft. My 95 did, with the 46rh transmission, which I THINK is similar to the 46re in your jeep.

My 249 when I pulled it out


sent from, uh

95 FiveTwo ZJ, DD, Lifted, Locked on 35s, Build (in progress)

My 5.9 swap (in progress)

Want your zj to be doorless in 60 seconds?
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post #1993 of 3109 Old 02-17-2014, 04:33 AM
MurdaJs
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Quote:
Originally Posted by Myusername1674 View Post
I'm thinking your 249 is going to have a longer shaft. My 95 did, with the 46rh transmission, which I THINK is similar to the 46re in your jeep.

My 249 when I pulled it out


sent from, uh
His 46re should have the .840. If it wasnt he could swap inout shafts since its late 95 build date.
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post #1994 of 3109 Old 02-28-2014, 12:47 PM
iann32
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I've been searching and I think I found a usable tc for sale for my swap. This is what I found. http://hartford.craigslist.org/pts/4345177207.html
I know I'm gona have to swap inputs but my question is, it should still bolt on to my tranny, correct? Also, would i still be able to use my rear drive shaft with it? I have a 95 zj with the v8 but tje tc is early 94 so I should have the early gear cut like the tc in the link.

Thanks,
Ian
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post #1995 of 3109 Old 02-28-2014, 11:08 PM
Myusername1674
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Quote:
Originally Posted by iann32 View Post
I've been searching and I think I found a usable tc for sale for my swap. This is what I found. http://hartford.craigslist.org/pts/4345177207.html
I know I'm gona have to swap inputs but my question is, it should still bolt on to my tranny, correct? Also, would i still be able to use my rear drive shaft with it? I have a 95 zj with the v8 but tje tc is early 94 so I should have the early gear cut like the tc in the link.

Thanks,
Ian
When was your 95 actually produced? Check the date stamped on the tcase. Mine was made late 94 and had the late gear cut...

sent from, uh

95 FiveTwo ZJ, DD, Lifted, Locked on 35s, Build (in progress)

My 5.9 swap (in progress)

Want your zj to be doorless in 60 seconds?
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