Transfer Case Swap Info NP249->NP231 & NP242 - Page 96 - JeepForum.com
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post #1426 of 3106 Old 01-11-2013, 09:49 PM
lil_joe
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I've been reading through this for weeks, thought I had it figured out. Just scored a 242 from a 90 XJ, will it work in my 97 ZJ, without modification, or what must be changed so I can bolt it up.


Mike
____
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--[.]IIIII[.]
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HER's: 92 YJ 4" RC 1.5 RC Booms, 1" BL on 33's
MINE's: 97 ZJ 5.2 Upcountry Limited Project 2" RE BB on 265/75 Mud Dogs, Locked front LSD rear, 242 swapped T-Case, RC Quick Disco's
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post #1427 of 3106 Old 01-12-2013, 08:18 AM
zarnold
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Quote:
Originally Posted by lil_joe View Post
I've been reading through this for weeks, thought I had it figured out. Just scored a 242 from a 90 XJ, will it work in my 97 ZJ, without modification, or what must be changed so I can bolt it up.
It will not work - gear cut change in mid 95.

This is from the first page:


Input Shafts and Gear Cuts


There are 3 different input shafts, .750", .840", and 1.55", as well as both 21 and 23 spline shafts. All ZJ transfer cases have a 23 spline input shaft, and all 92-01 XJ's have a 23 spline input shaft. 91 and older XJ's have the 21 spline input.

Here's a general rule of thumb when determining your input shaft length. This is not always 100% accurate, so make sure you know what you have before buying a transfer case.

93-95 V8 ZJ's: 46RH transmission, 1.55" 23 spline input shaft
93-95 I6 ZJ's with the 42RE: .840" 23 spline input (with collar)
93 I6 ZJ's with the AW4 or AX15: .750" 23 spline input
All 96-98 ZJ's: .840" 23 spline input
All 96-01 XJ's: .840" 23 spline input
92-95 XJ's: .750" 23 spline input
91 and older XJ's: .750" 21 spline input

Last edited by zarnold; 01-19-2013 at 08:29 PM. Reason: Incorrect information on input shaft swap.
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post #1428 of 3106 Old 01-13-2013, 08:46 AM
Hardy350
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Hi All,
can I swap a input shaft out of a NV 247 in a NP 242 build Date 1993 ?
Thanks in advance

Hardy
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post #1429 of 3106 Old 01-13-2013, 09:15 PM
zarnold
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Quote:
Originally Posted by Hardy350 View Post
Hi All,
can I swap a input shaft out of a NV 247 in a NP 242 build Date 1993 ?
Thanks in advance

Hardy
Can you give a few details of what your trying to accomplish. Your profile lists a Dana 300 TC, but I don't thing that's what your questioning about.
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post #1430 of 3106 Old 01-14-2013, 10:19 PM
airwolf9090
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I am still waiting on knowing if a someone could use a XJ driveshaft in a ZJ if you swap in the External slip yoke case....

1996 Jeep ZJ Orvis
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post #1431 of 3106 Old 01-14-2013, 10:36 PM
squazz
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Quote:
Originally Posted by airwolf9090 View Post
I am still waiting on knowing if a someone could use a XJ driveshaft in a ZJ if you swap in the External slip yoke case....
I know a guy that is running my 30" zj rear DS on his lifted 00XJ cuz his stock was shorter" so that could be a option your gonna have to measure a few to find out for certain

on that note im running stock DS on the 98-5.9 and 94-4.0 both have a 242 extSY
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post #1432 of 3106 Old 01-16-2013, 05:37 PM
FPKites
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Definitely measure, and also remember that XJs also got the internal slip (mine for instance). My 242 swap took no driveshaft changes.

Jim Karlin
"How the heck do you get there?"
"Duh! Big RED Jeep!!!"
Best customer service in the states:

96 ZJ Laredo
5" lift, Claytons, KOR radiator support, rear bumper, steering brace, etc, etc, etc.

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post #1433 of 3106 Old 01-19-2013, 01:18 PM
ratmonkey
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Quote:
Originally Posted by lil_joe View Post
I've been reading through this for weeks, thought I had it figured out. Just scored a 242 from a 90 XJ, will it work in my 97 ZJ, without modification, or what must be changed so I can bolt it up.
Quote:
Originally Posted by Hardy350 View Post
Hi All,
can I swap a input shaft out of a NV 247 in a NP 242 build Date 1993 ?
Thanks in advance

Hardy
no. both for the same reason, gear cut change.

'97 zj 5.2, some stuff, some other suff, and some things that even work sometimes.

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post #1434 of 3106 Old 01-19-2013, 05:04 PM
lil_joe
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Ran across this write up, can I use my input shaft and swap how it's shown here? 97 249 input shaft swapped into 90 242

http://kevinsoffroad.com/techarticle...-242_swap.html

Mike
____
lJeepl
--[.]IIIII[.]
Obsession is a word the lazy use to describe the dedicated
HER's: 92 YJ 4" RC 1.5 RC Booms, 1" BL on 33's
MINE's: 97 ZJ 5.2 Upcountry Limited Project 2" RE BB on 265/75 Mud Dogs, Locked front LSD rear, 242 swapped T-Case, RC Quick Disco's
www.virtualjeepclub.com/
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post #1435 of 3106 Old 01-19-2013, 05:08 PM
comptiger5000
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Quote:
Originally Posted by lil_joe View Post
Ran across this write up, can I use my input shaft and swap how it's shown here? 97 249 input shaft swapped into 90 242

http://kevinsoffroad.com/techarticle...-242_swap.html
The inputs won't swap, as the gear cut for the input planetary changed in late 95.
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post #1436 of 3106 Old 01-20-2013, 10:18 AM
ghatid
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I just went through the 249 --> 242 swap.

I started with a 249 (1998), that was skipping at low speed turns. When I opened up the 249, everything looked pristine, so I assumed the VC was the bad part. I decided to go with the 242 swap to save money.

I found a 242 (1997, supposedly) on craigslist, and when I picked it up, all the bearings, chain, etc, were more worn than my 249, but everyone says they last forever, so I just switched out some of the bearings and swapped the inputs. Also, the output shaft was a little long so...I just cut it short and it barely fits the rear drive shaft:-D...was that okay to do?

2 problems:

1. The shift tab I got (the part of the linkage directly attached to the tcase with one rectangular hole and one normal hole) is too long; it seems that the guy had given me a 249 shift tab with my 242. Does anyone know the distance between the holes so I can just drill it out? Right now the car only goes 4ft, N, 4Lo.

2. When I put the car in 4lo, it makes quite a bit of noise and jumps/skips when I turn, just like when I had the 249 in it. When I'm in 4FT, it makes less noise and doesn't skip. Is there a part in the tcase I have that's broken? I know you guys say it takes a bit of time to wear into the 4wd if it hasn't been used, but the 4ft is fine...

Any help is greatly appreciated! I wonder if I'm going to have to get another tcase:-/.

Thanks!
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post #1437 of 3106 Old 01-20-2013, 10:29 AM
FPKites
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You shouldn't be driving it on the street in 4-low. The skipping and hopping you're experiencing is because the front and rear are locked together.

Please define the noise you are experiencing in 4FT.

Jim Karlin
"How the heck do you get there?"
"Duh! Big RED Jeep!!!"
Best customer service in the states:

96 ZJ Laredo
5" lift, Claytons, KOR radiator support, rear bumper, steering brace, etc, etc, etc.

04 WJ Overland
Clean.... :D
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post #1438 of 3106 Old 01-20-2013, 10:40 AM
ghatid
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Quote:
Originally Posted by FPKites View Post
You shouldn't be driving it on the street in 4-low. The skipping and hopping you're experiencing is because the front and rear are locked together.

Please define the noise you are experiencing in 4FT.
Well shoot, now I feel stupid, I'm new to 4wd, but I knew that much...(but happy because...you know, there might not be anything wrong with my tcase). The noise was mostly in 4lo.
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post #1439 of 3106 Old 01-20-2013, 11:02 AM
ghatid
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Quote:
Originally Posted by FPKites View Post
You shouldn't be driving it on the street in 4-low. The skipping and hopping you're experiencing is because the front and rear are locked together.

Please define the noise you are experiencing in 4FT.
As far as noise in 4ft, I just drove it around, and it just sounds noisy...a speed dependent sound that's somewhere between a whir and a whomp.
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post #1440 of 3106 Old 01-20-2013, 02:40 PM
Coog
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Does the noise disappear when 2wd is selected? If so it could be your front axle/diff.
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