Transfer Case Swap Info NP249->NP231 & NP242 - Page 110 - JeepForum.com
Search  
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back JeepForum.com > Models > Jeep Grand Cherokee & Commander Forums > ZJ Grand Cherokee Forum > Transfer Case Swap Info NP249->NP231 & NP242

Building a Bumper?Ruffstuff Axle Simple Swap Kit!~Artec JK 1 TON SWAP~

Reply
Unread 08-16-2013, 02:13 PM   #1636
tahoe9813
Registered User
 
Join Date: Aug 2013
Posts: 4
Lots to get through

I have a 97 Grand Orvis with a NP249J that I'd like to switch for a NP242.

I'm still going through the 100+ pages of this thread, and there's some great information.

In looking at sourcing the NP242, I stumbled upon http://www.midwesttrans.com/np242.html.

I know that I'll have the 23 spline input shaft, and it looks like a very high (certain?) likelihood of a .840" input shaft.

If I were to order the above TC, would specifying .840" 23 be enough, or is there more that I'd need to specify.

I'm looking for a direct bolt on replacement. Likewise, I could source another case from a JY or other donor, but at least I'd know that the one I'm getting is a good model that's been built up properly (and with a warranty).

Anyway...just looking for thoughts.

tahoe9813 is offline   Reply With Quote
Unread 08-16-2013, 09:31 PM   #1637
PhoenixZJ
Registered User
1995 ZJ 
 
Join Date: Jun 2013
Location: Fountain Hills, AZ
Posts: 24
I just want to make sure I'm reading everything g correctly here. I have two transfer cases ones is a np249 built in January 95 and I'm swapping it to a np242 built in November 95. All I have to do is swap the inputs correct? Or are the the same inputs?
PhoenixZJ is offline   Reply With Quote
Unread 08-16-2013, 09:59 PM   #1638
zarnold
Member
1998 ZJ 
 
Join Date: Oct 2012
Location: Park Ridge, IL
Posts: 241
Quote:
Originally Posted by XIP59L View Post
I just dropped a 242 J from a '98 Laredo donor for my '98 5.9L. Do I need to go back to the scrap yard for wiring , sensors, or anything else from the donor? Also will the rear donor driveshaft bolt in and be fine for now?? Next step is a 6" suspension lift.
You shouldn't need anything else, you did get the speedometer pickup right? If not you can use the speedo pickup from your original tc.

The donor driveshaft will have different ujoints, they are smaller that the ujoints in the 5.9. If your not lifted now, you will have to shorten the original driveshaft by about a inch.
zarnold is offline   Reply With Quote
Unread 08-16-2013, 10:08 PM   #1639
zarnold
Member
1998 ZJ 
 
Join Date: Oct 2012
Location: Park Ridge, IL
Posts: 241
Quote:
Originally Posted by tahoe9813 View Post
I have a 97 Grand Orvis with a NP249J that I'd like to switch for a NP242.

I'm still going through the 100+ pages of this thread, and there's some great information.

In looking at sourcing the NP242, I stumbled upon http://www.midwesttrans.com/np242.html.

I know that I'll have the 23 spline input shaft, and it looks like a very high (certain?) likelihood of a .840" input shaft.

If I were to order the above TC, would specifying .840" 23 be enough, or is there more that I'd need to specify.

I'm looking for a direct bolt on replacement. Likewise, I could source another case from a JY or other donor, but at least I'd know that the one I'm getting is a good model that's been built up properly (and with a warranty).

Anyway...just looking for thoughts.

Yeah, specifying .840", and 23 splines should be good, but I would talk to somebody there to make sure. BTW not a bad price. IIRC, it would cost about $400.00 to rebuild a tc. So, for about $150 - $200 more you get a 12 month warranty.
zarnold is offline   Reply With Quote
Unread 08-18-2013, 10:59 AM   #1640
95chameleonzj
Registered User
1995 ZJ 
 
Join Date: May 2013
Location: Prineville, Oregon
Posts: 50
So quick question here I have a 95 with the np 249 and I went to the jy and found two transfer cases one 231 and one 242 both rigs are pre 95 one is a zj and one is a xj. Would it just be a direct swap for either one? And what one do you recommend?


Sent from AutoGuide.com App
__________________
95 jeep grand cherokee 5.2 v8 quadra-trac. Arb winch bumper bds 4.5 inch lift jks upper and lower control arms green and gray two tone hopefully more to come
95chameleonzj is offline   Reply With Quote
Unread 08-20-2013, 08:04 PM   #1641
JrMechanic
Registered User
1993 ZJ 
 
Join Date: Oct 2008
Location: Lima, Ohio
Posts: 3,368
Hey Guys! Just wanted to let everyone know I'm still around... I made a major career change this last spring and have been non stop since then and unfortunately it hasn't left much time to answer any questions about the swap, or build any cases for my fellow ZJ enthusiasts. I'm hoping things slow down and I can get back to building 231 and 242's.

I am working on prototyping a TRUE NP242 HD SYE though

In the meantime if anyone has any questions that can't be answered on the board or just wants to give me a shout and catch up, shoot me an email and there's a better chance I'll see it: TransferCaseSolutions@hotmail.com
__________________
Want to swap an NP242 or NP231 into your ZJ? Here's how:
http://www.jeepforum.com/forum/f13/n...pdated-685644/
JrMechanic is offline   Reply With Quote
Unread 08-21-2013, 09:02 AM   #1642
Maine1994ZJ
Registered User
1993 ZJ 
 
Join Date: Feb 2013
Location: Phippsburg, Maine
Posts: 742
JrMechanic, glad you're back! Great writeup!! I did a 249 to 231 swap last weekend using this awesome writeup!! I cannot begin to THANK YOU enough for taking the time to write this up!!!!!

My 231 has a build date of 5/10/94 and the gear cut matched my pre 11/92(build tag fell off long ago) 249 perfectly, so the gear cut change happened more toward the end of May '94, just for the record.

Again, thanks for the awesome write-up!!!
__________________
'93 V8 ZJ Mountain Goat Edition.
Maine1994ZJ is offline   Reply With Quote
Unread 08-22-2013, 07:26 PM   #1643
dave_dj1
Registered User
1994 ZJ 
 
Join Date: Jun 2006
Location: shushan, ny
Posts: 825
Thanks for the write up, I just swapped my 249 for a 242. I had to disassemble both cases so I could use my input shaft. It really wasn't a big deal, I have put in SYE kits in 231's before.

One thing I would like to mention that I encountered, my shift arm ON THE 242 T-CASE was the exact same length as the one on the 249, now this t-case came out of an early built 94, mine is a late built 93 (it's a 94 model year built in 12/93). After searching Google Images for 242 cases I came to the conclusion that "most" of them had much shorter shift arms bolted on to them. My linkage was about 2" too long, I was going to cut and weld it but decided to drill a couple of holes closer to the bolt the proper size in a spare lever, then I bent the linkage so that when the t-case was in 2wd and the shifter inside was in 2wd it all lined up. It seems to work fine as long as you slam it pretty hard to get it back into 2wd.

On another note, I unhooked the red plugs in the VIC and plugged the black one in, the only thing that shows up is when I am in full time 4wd. Not a big deal for me but It would be nice to have all the positions light up.
Did I miss something, do I have to change the shift detent switch from my old 249 to the 242? I was under the impression that the switch would work and the VIC would light up properly.
thanks,
dave
__________________
www.rok-freekz.com
Wheel it like ya stole it!
dave_dj1 is offline   Reply With Quote
Unread 08-24-2013, 07:40 AM   #1644
Maine1994ZJ
Registered User
1993 ZJ 
 
Join Date: Feb 2013
Location: Phippsburg, Maine
Posts: 742
Quote:
Originally Posted by dave_dj1 View Post

On another note, I unhooked the red plugs in the VIC and plugged the black one in, the only thing that shows up is when I am in full time 4wd. Not a big deal for me but It would be nice to have all the positions light up.
Did I miss something, do I have to change the shift detent switch from my old 249 to the 242? I was under the impression that the switch would work and the VIC would light up properly.
thanks,
dave
You did things right. On the 242/231s they only light up "Part Time" on the VIC in any of the 4wd ranges.
They do not differentiate between part time/full time/lo range.
It would be cool if they worked like you were hoping, but they weren't designed that way.
I was kinda bummed out, but it's nothing major.
Lucky for me, my 231 tells me I'm in part time no matter what gear range it's in......
__________________
'93 V8 ZJ Mountain Goat Edition.
Maine1994ZJ is offline   Reply With Quote
Unread 08-24-2013, 09:36 AM   #1645
ejschultz
Web Wheeler
 
ejschultz's Avatar
1997 ZJ 
 
Join Date: Feb 2010
Location: Crown Point, Indiana
Posts: 3,056
Quote:
Originally Posted by Maine1994ZJ View Post
You did things right. On the 242/231s they only light up "Part Time" on the VIC in any of the 4wd ranges.
They do not differentiate between part time/full time/lo range.
It would be cool if they worked like you were hoping, but they weren't designed that way.
I was kinda bummed out, but it's nothing major.
Lucky for me, my 231 tells me I'm in part time no matter what gear range it's in......
My 242 tells me part time and full time. It doesn't differentiate between 4 high and 4 low though.
__________________
97 ZJ - 5.2L, 242, 4" IRO lift w/short arms & adj. TBs, JKS Discos/BPEs, DT3000s, Aussie'd 44A, sliders, OEM skids/hooks/hitch, 31" Duratracs on 15x8s
14 JKU Sport S - Stock
Build
ejschultz is offline   Reply With Quote
Unread 08-25-2013, 06:10 PM   #1646
Maine1994ZJ
Registered User
1993 ZJ 
 
Join Date: Feb 2013
Location: Phippsburg, Maine
Posts: 742
Quote:
Originally Posted by ejschultz View Post
My 242 tells me part time and full time.
Well, there.... I stand corrected. My bad.
__________________
'93 V8 ZJ Mountain Goat Edition.
Maine1994ZJ is offline   Reply With Quote
Unread 08-25-2013, 07:14 PM   #1647
ejschultz
Web Wheeler
 
ejschultz's Avatar
1997 ZJ 
 
Join Date: Feb 2010
Location: Crown Point, Indiana
Posts: 3,056
Quote:
Originally Posted by Maine1994ZJ View Post
Well, there.... I stand corrected. My bad.
Maybe the earlier model ZJs don't.
__________________
97 ZJ - 5.2L, 242, 4" IRO lift w/short arms & adj. TBs, JKS Discos/BPEs, DT3000s, Aussie'd 44A, sliders, OEM skids/hooks/hitch, 31" Duratracs on 15x8s
14 JKU Sport S - Stock
Build
ejschultz is offline   Reply With Quote
Unread 08-26-2013, 08:19 PM   #1648
dnuccio
Registered User
1995 ZJ 
 
Join Date: Jul 2012
Location: Phoenix, AZ
Posts: 3,479
Quote:
Originally Posted by 95chameleonzj View Post
So quick question here I have a 95 with the np 249 and I went to the jy and found two transfer cases one 231 and one 242 both rigs are pre 95 one is a zj and one is a xj. Would it just be a direct swap for either one? And what one do you recommend?


Sent from AutoGuide.com App
you'll need to swap inputs
__________________
Reliability is relative
R.I.P. Ratmonkey
dnuccio is offline   Reply With Quote
Unread 08-26-2013, 08:23 PM   #1649
RagTagSoldier
Registered User
1996 ZJ 
 
Join Date: Nov 2011
Location: bellefontaine, ohio
Posts: 683
Quote:
Originally Posted by zarnold

You shouldn't need anything else, you did get the speedometer pickup right? If not you can use the speedo pickup from your original tc.

The donor driveshaft will have different ujoints, they are smaller that the ujoints in the 5.9. If your not lifted now, you will have to shorten the original driveshaft by about a inch.
What do you mean by the speedometer pickup. I just ordered a 242 from a 97 xj for my 96 zj. So from what I understand it should be a direct bolt on. But I don't think it comes with the shift tab. What can I do about that.

Sent from my iPhone using JeepForum so it probably looks goofy.
RagTagSoldier is offline   Reply With Quote
Unread 08-26-2013, 09:25 PM   #1650
zarnold
Member
1998 ZJ 
 
Join Date: Oct 2012
Location: Park Ridge, IL
Posts: 241
Quote:
Originally Posted by RagTagSoldier View Post
What do you mean by the speedometer pickup. I just ordered a 242 from a 97 xj for my 96 zj. So from what I understand it should be a direct bolt on. But I don't think it comes with the shift tab. What can I do about that.

Sent from my iPhone using JeepForum so it probably looks goofy.
Mechanical speedometer pickup, but I'm sure it was included. Your going to need the short tab too. Somebody on this forum drilled holes in the long 249 tab and was successful in getting it to work.
img_0294_1.jpg  
zarnold is offline   Reply With Quote
Reply
Thread Tools


Suggested Threads





Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. JeepForum.com is not in any way associated with Jeep or the Chrysler Corp.