Transfer Case Swap Info NP249->NP231 & NP242 - Page 61 - JeepForum.com
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Unread 11-14-2011, 08:55 PM   #901
csouers
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1999 XJ Cherokee 
 
Join Date: Feb 2008
Location: Bloomington, Indiana
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Quote:
Originally Posted by 4xclimb
So how much are these 242's finished going for? PM messageing box is always full so I try this way....
Rebuilt with new chain, bearings, seals, pads, and gaskets along with made for a different Jeep, I'd expect $600 would be fair. The cost of a complete overhaul kit is around 250, the case often less than that, and labor.

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1998 Bright Platinum ZJ 5.9 Limited - 5.9l, 46RE, NV-242, D30/44a (Trac-Loc) w/3.73s - The DD
1999 White XJ Sport - 4.0l, AW4, NP-231, D30/8.25 w/3.55s - The Rig

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Unread 11-15-2011, 07:51 AM   #902
Freestyle713
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Quote:
Originally Posted by AngryVanilla View Post
I've been researching this for awhile now and have some questions... I have a 94 ZJ 5.2 w/ 249 TC... The build date on my Transfer Case is pre-92, i forget the actual date, but it was in 1992... So i have the old style gear cut, correct??? From my research i have found that i need a NP242 from a XJ w/ Transfer case build date of Pre-94.5, and i will have to swap my input shaft from my 249, correct???
bump
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Unread 11-18-2011, 07:38 AM   #903
wildman90
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hey everyone,

looking for the seal number for the external slip yoke np 231. 4370n is 2.375" dia with hole for slip yoke. seal for external slip yoke will be about 2.85" dia with hole for the output shaft. can this be added to the 1st post? TIA- chuck
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nothing i cant do--i'l pay myself $50/hr labor!!

the only thing you cannot do, is that which you have already accepted defeat!

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Unread 11-19-2011, 10:23 AM   #904
creepinjeepin
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I recently had the entire rt side of my 242J transfer case explode . replaced it with a 249 J would really like to go back to the 242 as i like the part time feature . Since none of the pull and (PRAY) salvage yards in my area inventory parts only vehicles , I was curious can you tell what transfer case a jeep has from the vin # ?
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Unread 11-19-2011, 12:42 PM   #905
comptiger5000
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I don't think you can. If the yards have a few Jeeps in them, there's a pretty good chance that one of the 96 - 98 ZJs or 96 - 01 XJs has a 242 (the t-cases are identical in all of those).
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Unread 11-19-2011, 09:30 PM   #906
hydra
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Quote:
Originally Posted by comptiger5000 View Post
I don't think you can. If the yards have a few Jeeps in them, there's a pretty good chance that one of the 96 - 98 ZJs or 96 - 01 XJs has a 242 (the t-cases are identical in all of those).
But I thought the V8 and 6-cyl T-cases in 96-98 ZJ's still had different input-shaft lengths.....??

And I'd never heard that 4 and 6 cyl XJ cases had the same shaft as a v8 ZJ case.

Are you saying that any XJ 242 case from 96-01 will have a 1.75" long input shaft same as my '95 ZJ-v8 249 case ??

thanks

By the way, if someone near So. Oregon currently has a 242 for sale that will bolt into my '95 ZJ-v8, with a known-good chain in it, I'm ready to buy.

Or, failing a ready-to-install 242, I'd be interested in a 242 with known-good chain that could be melded with my 249, without having to shell out big $$$ for new parts. I've been out of work for a while now...

please email instead of PM'ing (which takes forever over dialup here in the mountains).

metal
at
fullwave
dot
com

thanks much,
Richard
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Unread 11-20-2011, 01:45 PM   #907
wildman90
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Quote:
Originally Posted by wildman90 View Post
hey everyone,

looking for the seal number for the external slip yoke np 231. 4370n is 2.375" dia with hole for slip yoke. seal for external slip yoke will be about 2.85" dia with hole for the output shaft. can this be added to the 1st post? TIA- chuck
bump
__________________
nothing i cant do--i'l pay myself $50/hr labor!!

the only thing you cannot do, is that which you have already accepted defeat!

many people search for god in the eleventh hour, only to die at 10:30
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Unread 11-20-2011, 02:35 PM   #908
csouers
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Quote:
Originally Posted by hydra View Post
But I thought the V8 and 6-cyl T-cases in 96-98 ZJ's still had different input-shaft lengths.....??

And I'd never heard that 4 and 6 cyl XJ cases had the same shaft as a v8 ZJ case.

Are you saying that any XJ 242 case from 96-01 will have a 1.75" long input shaft same as my '95 ZJ-v8 249 case ??

thanks

By the way, if someone near So. Oregon currently has a 242 for sale that will bolt into my '95 ZJ-v8, with a known-good chain in it, I'm ready to buy.

Or, failing a ready-to-install 242, I'd be interested in a 242 with known-good chain that could be melded with my 249, without having to shell out big $$$ for new parts. I've been out of work for a while now...

please email instead of PM'ing (which takes forever over dialup here in the mountains).

metal
at
fullwave
dot
com

thanks much,
Richard
All ZJs 96-98, regardless of engine, had the 23 spline .840" input.

4 Cylinder cases are 21 spline input, although you may be able to swap the input gears between the two cases, as long as gear cut is the same. 6cyl XJs from 96 or 97+ had the 23 spline .840" input. All three transmissions I believe (AW4, AX-15, and the 00-01 NV3550), but I'm not 100% on that one.

The 46RH in the ZJ had the 23 spline 1.75" input. The 6cyl AW4 in the XJ 91-95 or 96 had the 23 spline .750" input gear. Then they changed to the .840" input gear as said above.

Nothing newer than 95 will have the same input gear that your Jeep uses. You must do some modifying.
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1998 Bright Platinum ZJ 5.9 Limited - 5.9l, 46RE, NV-242, D30/44a (Trac-Loc) w/3.73s - The DD
1999 White XJ Sport - 4.0l, AW4, NP-231, D30/8.25 w/3.55s - The Rig

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Unread 11-20-2011, 02:44 PM   #909
csouers
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Quote:
Originally Posted by AngryVanilla View Post
I've been researching this for awhile now and have some questions... I have a 94 ZJ 5.2 w/ 249 TC... The build date on my Transfer Case is pre-92, i forget the actual date, but it was in 1992... So i have the old style gear cut, correct??? From my research i have found that i need a NP242 from a XJ w/ Transfer case build date of Pre-94.5, and i will have to swap my input shaft from my 249, correct???

Last question is, i have a NP242 Transfer Case i believe is from a TJ, im not sure though, and the build date is 2001 on the case... Is there anyway i can make this work??? Like buying a junk 249 post-94.5 build date, and swap the input shaft??? Or is it useless in my swap into a 94 ZJ???

Thanks
You have the old gear cut, yes. You need a 242 from a 6cyl XJ with the internal slip yoke. It has the exposed seal on the rear output instead of a bare spline with a rubber boot. Swap the input gear and go.

You don't have a 242 from a TJ. AFAIK, they never put a 242 in the TJ, only the 231 and 241 (Rubicon 4:1 low range).

Looks like you have a 242 case from a late 01 XJ. You will need to use the front half of the tcase and the input from your 249 (bolts to the transmission) with everything else from the 242 XJ case. You must swap the shift sector plate otherwise it's not gonna work properly.

You COULD buy a new gear cut 249 for your Jeep, but be aware that you might not be getting what you think you are.
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1998 Bright Platinum ZJ 5.9 Limited - 5.9l, 46RE, NV-242, D30/44a (Trac-Loc) w/3.73s - The DD
1999 White XJ Sport - 4.0l, AW4, NP-231, D30/8.25 w/3.55s - The Rig

My Photography
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Unread 11-21-2011, 07:00 AM   #910
kmm2736
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SO I was driving down the road last night and I had my normal vibration happening, originally I thought that it was front suspension related ( just put new tie rod ends in) so i am driving and all of a sudden i hear bang- clank clank -pow...haha.. I pulled over and was looking around and my front drive shaft fell out from the t case end. Bolts broke right of in which I believe the out put shaft. I have a np 249 for which i am not a fan of after reading about them.

MY question is should i invest in a new t case that i want or fix the drive shaft and 249 which has linkage issues i just noticed? Dropping my rig off today to get Heavy duty rocker guard tubes put on. Bad timing to have stuff break!

Info regarding my t case choice about my jeep is I drive in snow I live in Maine and in a rural area. Next year I plan to convert my engine to diesel! I think the np242 or the 231 but have concerns with 231 regarding driving in snow.

Ps. I think this was my fault because i had the drive shaft out once trouble shooting and never rechecked bolts after tightening.
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Unread 11-21-2011, 07:32 AM   #911
comptiger5000
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The 231 is fine in snow. To be honest, I find 4 FullTime in my 242 pretty useless. It's a little better than 2wd in the snow for taking off, but it gives a very funny cornering dynamic at times. 4 Part Time just makes it understeer a bit (at least it's consistent), but at the speeds you're running when you need it, it's rarely an issue.

IMO, if you've got good tires (preferably snows, but at least good, soft-ish A/Ts), by the time you need more than 2wd, you're more than fine to use 4PT.
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Unread 11-21-2011, 07:50 AM   #912
csouers
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Quote:
Originally Posted by comptiger5000
The 231 is fine in snow. To be honest, I find 4 FullTime in my 242 pretty useless. It's a little better than 2wd in the snow for taking off, but it gives a very funny cornering dynamic at times. 4 Part Time just makes it understeer a bit (at least it's consistent), but at the speeds you're running when you need it, it's rarely an issue.

IMO, if you've got good tires (preferably snows, but at least good, soft-ish A/Ts), by the time you need more than 2wd, you're more than fine to use 4PT.
Good tires and a 242 is heaven. Even with the 5.2 in my 96, I really had to try to get the tires to spin even in deep snow with full time. Full time is nice because you can engage it and forget about it. You don't have to worry about that dry patch of road that might cause the driveline to bind up. Much like you don't have to worry about that locker that might cause you to oversteer and spin, because you have an open diff.

To each his own.
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1998 Bright Platinum ZJ 5.9 Limited - 5.9l, 46RE, NV-242, D30/44a (Trac-Loc) w/3.73s - The DD
1999 White XJ Sport - 4.0l, AW4, NP-231, D30/8.25 w/3.55s - The Rig

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Unread 11-21-2011, 02:00 PM   #913
onevision
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Honestly, for just driving on the street and in harsh weather, I'd take the 249 cases everyday and twice on Tuesdays. The downside of the 249 is that it absolutely sucks for any real 4 wheeling, so I stick with my 231 with Tera low and the short shaft kit. While it does good in the snow, it's not as good as my 249.
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Unread 11-22-2011, 08:14 AM   #914
kmm2736
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I'm noticing the np231 has allot more aftermarket support. I'm still hesitant regarding the snow thing because i am not the most aware driver..haha.. would be pissed to break it because of road conditions!

I went to a local junk yard looking yesterday and priced them out they guy said $500 plus!!! that seems way high!
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Unread 11-24-2011, 11:30 AM   #915
vonericsen
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That is way high...I can pull one at a yard around here for $70...
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