Transfer Case Swap Info NP249->NP231 & NP242 - Page 104 - JeepForum.com
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Unread 03-03-2013, 10:38 AM   #1546
zarnold
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Quote:
Originally Posted by lil_joe View Post
I think I got "swindled" on a t-case. The one I bought has a build date of 9-8-2000, 231J, but is about 1.5 inches longer than my 249, and does NOT have place to connect the speedometer, and the rear shaft is larger in diameter than mine. The labeling on the tag is correct for what I need, but all that I have read here, there is no mention of rear shafts being larger, could this be out of a Dodge?
If you had a Dodge TC it would be labeled something like 231DHD.... Yours is labeled 231J, so I'm thinking it's from a jeep, but which jeep. Pics?

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Unread 03-03-2013, 11:15 AM   #1547
lil_joe
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It is possible to switch the tags, they are just held on with a Philips screw. If it truly was a Jeep TC, the rear shafts should be the same size, should they not?
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Unread 03-03-2013, 11:59 AM   #1548
zarnold
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Quote:
Originally Posted by lil_joe View Post
It is possible to switch the tags, they are just held on with a Philips screw. If it truly was a Jeep TC, the rear shafts should be the same size, should they not?
Anything is possible, but I'm hoping it's not that. Shaft should be the same, there is(was) a 231 HD used in ZJs, or maybe the PO swapped in a SYE with a HD shaft (I doubt that in this case), either way should not matter the HD SYE kits, just eliminate the neck down.

Pics?
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Unread 03-03-2013, 12:38 PM   #1549
lil_joe
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Here are the cases side by side. The dirty one is the just removed 249, the other is the case in question. No SYE, actually longer tail piece, and larger rear shaft, no place on the case to connect the speedometer.


The case in question, where the speedometer pick up should be


The 249 where the speedometer pick up is located
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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
www.virtualjeepclub.com/
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Unread 03-03-2013, 04:37 PM   #1550
ejschultz
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It's probably from a newer than a ZJ Jeep that uses the ABS tone rings for speed.
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Unread 03-03-2013, 04:57 PM   #1551
comptiger5000
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Quote:
Originally Posted by ejschultz View Post
It's probably from a newer than a ZJ Jeep that uses the ABS tone rings for speed.
Not if it's a 231. WJs only had 242s and 247s. It could be from a KJ or KK, or maybe a JK though. I dunno what those use for speedo pickup.
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Unread 03-03-2013, 05:12 PM   #1552
ejschultz
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Yeah. At first I was going to say from a WJ but realized it was a 231. KJs and JKs I believe would be the same as a WJ though. KKs are electronically controlled.
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Unread 03-03-2013, 09:58 PM   #1553
zarnold
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Not sure what it is either, maybe a 231-AMC (YJs and Wranglers). I don't see a hole for the speedo on this one, but the angle is bad. I found this pic on ebay.
231amc.jpg  
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Unread 03-05-2013, 06:31 AM   #1554
mandrews000
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The YJs had a cable driven speedo on the tail. They also have vacuum range selector... Not sure sure any other wrangler though.
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Unread 03-05-2013, 08:22 AM   #1555
comptiger5000
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TJs have electronic speedos with the sensor on the t-case, like a ZJ / later XJ. I dunno about JKs though.
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Unread 03-08-2013, 03:25 PM   #1556
ratmonkey
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Probably from a liberty.
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'97 zj 5.2, some stuff, some other suff, and some things that even work sometimes.

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Unread 03-09-2013, 12:24 PM   #1557
mandrews000
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Quote:
Originally Posted by ratmonkey
Probably from a liberty.
I believe your right.
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Unread 03-12-2013, 01:59 PM   #1558
OldManTan
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Hey Guys
New here.
Sure you have probably heard that over and over again. Really want to ditch my 249 in my 98 limited 5.2 for a 242. was wondering if I skim through all 100 million pages... does someone post this year XJ TC will fit my 98 direct bolt in no mods to the output shaft needed? asking too much? too good to be true?
there's an 01 xj with a 242 st the junk yard right now and was thinking/hoping that since it is newer...it will have the same output shaft as my 98 v8.

if no one knows... I will start my 140 page scan through
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Unread 03-12-2013, 02:36 PM   #1559
ratmonkey
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Quote:
Originally Posted by OldManTan View Post
Hey Guys
New here.
Sure you have probably heard that over and over again. Really want to ditch my 249 in my 98 limited 5.2 for a 242. was wondering if I skim through all 100 million pages... does someone post this year XJ TC will fit my 98 direct bolt in no mods to the output shaft needed? asking too much? too good to be true?
there's an 01 xj with a 242 st the junk yard right now and was thinking/hoping that since it is newer...it will have the same output shaft as my 98 v8.

if no one knows... I will start my 140 page scan through
Covered in the first post. The rear drive shaft will need shortened unless you have a significant amount of lift.
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'97 zj 5.2, some stuff, some other suff, and some things that even work sometimes.

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Unread 03-12-2013, 03:55 PM   #1560
OldManTan
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Quote:
Originally Posted by zturn13 View Post
Ok I'm sure y'all are tired of getting asked this I tried to skim threw the old post and learn what I could. If I'm understanding this right I have a 98 zj and anything from a 96 to 98 will work for the 249 to a 242 swap and its a direct swap except I might have to use a shorter drive shaft is this correct?
Quote:
Originally Posted by comptiger5000 View Post
Correct.
Quote:
Originally Posted by comptiger5000 View Post
The DS that comes with the t-case will likely also be too long, as a 4.0 would have a D35 rear axle (your 5.2 has a D44a, which is longer than the D35). If you have an alternate method of transport, I'd see how it lines up with your current shaft, and if it's too long, then take it to a driveline shop and have them shorten it an inch or so.
picked a random page.. got some good info/posts.
great thread for newcomers like me
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