Transfer Case Swap Info NP249->NP231 & NP242 - Page 109 - 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

Introducing MONSTALINER™ UV Permanent DIY Roll On Bed LineNEW!! HMF 50"-52" light bar mounting brackets!! Year End Clearance Sale! Save 20%

Reply
Unread 07-02-2013, 11:34 AM   #1621
OverlandZJ
Registered User
1998 ZJ 
 
Join Date: Oct 2012
Location: Bristol, Pa
Posts: 930
Quote:
Originally Posted by OverlandZJ View Post
Combining an 88 XJ 242 w/sye and a 98 249 front case half/input for my ZJ project. Anyone happen to know what size bit I need to drill the roll pin access hole into the 249's case half?

I don't have a 242 rubber plug on hand to measure..

For future reference... 3/8"

OverlandZJ is offline   Reply With Quote Quick reply to this message
Unread 07-02-2013, 08:33 PM   #1622
Maine1994ZJ
Registered User
1993 ZJ 
 
Join Date: Feb 2013
Location: Phippsburg, Maine
Posts: 746
Quote:
Originally Posted by JrMechanic View Post

It's best to go by the build date on the transfer case, not the year of the Jeep when determining the gear pitch. Rule of thumb is cases with a build date of pre 94.5 will have the old style gear cut, and cases with a build date of post 94.5 will have the new style gear cut.




Good Luck!
PLEASE!!!
Anybody know which gear cut I would have in a 231 built on 5/10/94?
Is it considered "pre" or "post 5/94?
I have a 50/50 chance of it being the same gear cut as my '93 249(no build tag on 249, ZJ's build date is 11/92) and the way my luck goes, it's going to be the wrong cut....

The 249 is in my DD, so I'd hate to remove it, tear them both apart, find out it's the wrong cut, and then have to put the 249 back together & reinstall to attempt the swap again at a later date.
That would SUCK!!!

Any help will be GREATLY appreciated!!!!
__________________
'93 V8 ZJ Mountain Goat Edition.
Maine1994ZJ is offline   Reply With Quote Quick reply to this message
Unread 07-02-2013, 08:53 PM   #1623
PhoenixZJ
Registered User
1995 ZJ 
 
Join Date: Jun 2013
Location: Fountain Hills, AZ
Posts: 24
You can call your local jeep dealership and they can look it up. I suggest calling the parts department. I've had great help with mine or you can PM your VIN too and I can look and see
PhoenixZJ is offline   Reply With Quote Quick reply to this message
Unread 07-04-2013, 09:09 AM   #1624
Maine1994ZJ
Registered User
1993 ZJ 
 
Join Date: Feb 2013
Location: Phippsburg, Maine
Posts: 746
Quote:
Originally Posted by PhoenixZJ View Post
You can call your local jeep dealership and they can look it up. I suggest calling the parts department. I've had great help with mine or you can PM your VIN too and I can look and see
I don't have the VIN from the donor, and it's been crushed and hauled off already...

I'm going out to see which input shaft style the 231 has before I even think about loosening a single bolt on the 249.
__________________
'93 V8 ZJ Mountain Goat Edition.
Maine1994ZJ is offline   Reply With Quote Quick reply to this message
Unread 07-04-2013, 05:19 PM   #1625
Contadino
Registered User
 
Join Date: Feb 2007
Location: MN
Posts: 8
SOLD! I have a 242 that I was going to put in my '95 but sold the Jeep last November so don't need it anymore. Open to offers.
Also have the shifter and bezel and front drive shaft. I have pictures I can email to you. SOLD!

Last edited by Contadino; 07-08-2013 at 10:31 PM.. Reason: SOLD
Contadino is offline   Reply With Quote Quick reply to this message
Unread 07-04-2013, 09:45 PM   #1626
zarnold
Member
1998 ZJ 
 
Join Date: Oct 2012
Location: Park Ridge, IL
Posts: 287
Quote:
Originally Posted by Contadino
I have a 242 that I was going to put in my '95 but sold the Jeep last November so don't need it anymore. Open to offers.
Also have the shifter and bezel and front drive shaft. I have pictures I can email to you.
You might want to post this in the classified section too.
zarnold is offline   Reply With Quote Quick reply to this message
Unread 07-10-2013, 04:40 PM   #1627
hondakilla98
Registered User
1998 ZJ 
 
Join Date: Jun 2013
Location: Beaverton, or
Posts: 333
I picked up a 242 from a 98 zj to swap into my 5.9. The 249 is isy and the 242 is esy, I have the driveline from the 242 as well. I'm just wondering which shaft I should run. I've read that 4.5" and more lift you use the isy shaft because it's longer, but I'm only at 4" of lift. I don't want to take out the rear springs and fully compress the back with each shaft to see which is better if I don't have too.
__________________
5.9 Limited, RE 4" lift, RE FTB, JK take offs w/ 255/75/17 BFG MT's, 1.25" wheel adapters, ARB Bumper, Superwinch LP10000, K&N intake, Flowmaster, custom JL & Focal stereo, 20% tint, KOR roof mount tire carrier, JCR sliders, cobra 75 wx st
hondakilla98 is offline   Reply With Quote Quick reply to this message
Unread 07-15-2013, 03:59 AM   #1628
hondakilla98
Registered User
1998 ZJ 
 
Join Date: Jun 2013
Location: Beaverton, or
Posts: 333
Anybody?
__________________
5.9 Limited, RE 4" lift, RE FTB, JK take offs w/ 255/75/17 BFG MT's, 1.25" wheel adapters, ARB Bumper, Superwinch LP10000, K&N intake, Flowmaster, custom JL & Focal stereo, 20% tint, KOR roof mount tire carrier, JCR sliders, cobra 75 wx st
hondakilla98 is offline   Reply With Quote Quick reply to this message
Unread 07-15-2013, 04:35 AM   #1629
ejschultz
Web Wheeler
 
ejschultz's Avatar
1997 ZJ 
 
Join Date: Feb 2010
Location: Crown Point, Indiana
Posts: 3,189
Do you have aftermarket control arms? If not, you're probably going to want the shorter driveshaft. As the axle moves away from the body, the radius style control arms keep the axle moving in an arc motion. The driveshaft actually needs to be shorter. If you have aftermarket adjustable arms to keep the axle in the factory location, then you'd need a longer driveshaft. With my lift and control arms, my 242 driveshaft was too short and the 249 driveshaft was too long. I had to cut about an inch off the slip yoke portion of my 249 driveshaft to make it work. I don't recommend cutting it that way. You should probably get it professionally shortened and balanced if you need it shortened, however, I didn't care and it worked out for me, luckily. Every ZJ is a little different though and there are a lot of different length driveshafts these things were fitted with. A definite answer to your question can only be provided by doing the swap and seeing what works.
__________________
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 Quick reply to this message
Unread 07-15-2013, 03:37 PM   #1630
hondakilla98
Registered User
1998 ZJ 
 
Join Date: Jun 2013
Location: Beaverton, or
Posts: 333
I have adjustable lower control arms in the rear with stock uppers. I've had a little vibration since I lengthened the rear arms. So I shortened them from 17.25-16 7/8 today. Most of my vibration is gone. I guess I'll see what I need to do when I do the swap.

On the freeway I still have some vibration and the axle is where I want it F-R, so I'm looking for used adjustable uppers to tune the pinion angle. And worst case I pay $80 to shorten the driveshaft.
__________________
5.9 Limited, RE 4" lift, RE FTB, JK take offs w/ 255/75/17 BFG MT's, 1.25" wheel adapters, ARB Bumper, Superwinch LP10000, K&N intake, Flowmaster, custom JL & Focal stereo, 20% tint, KOR roof mount tire carrier, JCR sliders, cobra 75 wx st
hondakilla98 is offline   Reply With Quote Quick reply to this message
Unread 07-24-2013, 03:12 PM   #1631
eagsc7
Registered User
1994 ZJ 
 
Join Date: Apr 2013
Location: Sweetwater Cyt, WY
Posts: 433
Doing a TRANSMISSION Change, and I THINK this should be put in the first post for 42RE Transmissions with NP231 for the 94 ZJs...
Quote:
Originally Posted by novak-adapt.com
Torqueflite 42RE Caveat
Unlike all other known transmissions to the Jeep New Process transfer cases, the Torqueflite 42RE transmission as found in 1994 ZJ Grand Cherokees features a unique output shaft with a pilot tip on the end of it. This shaft pilots into the NP input gear in a front-facing caged needle bearing. Note the image below
eagsc7 is offline   Reply With Quote Quick reply to this message
Unread 07-26-2013, 01:51 PM   #1632
sergio
Registered User
1995 ZJ 
 
Join Date: Apr 2012
Posts: 176
I just picked up a 242 transfer case. It's from a 1989 XJ. My question is will I be able to change the input from my 1995 249 transfer case to the 242 since the 89 is 21 splines and the 95 is 23 splines?
sergio is offline   Reply With Quote Quick reply to this message
Unread 08-11-2013, 09:56 PM   #1633
IndianScout
Registered User
1995 ZJ 
 
Join Date: Feb 2010
Location: ND, Turtle Mountain band of Chippewa Reservation
Posts: 35
ok, I'm still confused, my Grand Cherokee Limited was built in 12/94 it's a 95 model, I swapped out both rear ends with Chrysler 9 1/4 trac lok's my transfer case is a 249, would this swap do me much good?

with the new rear ends I do notice specially in reverse a bunch of wheel hop and swaying, but forward I'm just fine.

so I would need to find a 242 from an earlier jeep and just change the back end?

IndianScout is offline   Reply With Quote Quick reply to this message
Unread 08-13-2013, 05:25 AM   #1634
Texas ZJ1
Jeep Jedi Master
 
Texas ZJ1's Avatar
1994 ZJ 
 
Join Date: Mar 2003
Location: Omaha, NE
Posts: 20,135
You just need to swap the bad viscous coupler from the 249 and you're good.
__________________
00 4.7 Laredo...stock

94 5.9 Laredo 6.5 RE lift with 35 Maxxis Bighorns
and 33 Bridgestone Duelers
Detroit and true trac
Red Jeep Club Member
REDNECK JCM
Texas Jeep Owner #6
USN Jeep Club #4
http://www.kevinsoffroad.com/
602.841.3355

For your performance needs:

kolak@kolakperformance.com
480.998.3661
Texas ZJ1 is offline   Reply With Quote Quick reply to this message
Unread 08-16-2013, 10:22 AM   #1635
XIP59L
Registered User
 
Join Date: Aug 2013
Posts: 1
249 to 242 swap

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.
XIP59L is offline   Reply With Quote Quick reply to this message
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the JeepForum.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.
Note: All free e-mails have been banned due to mis-use. (Yahoo, Gmail, Hotmail, etc.)
Don't have a non-free e-mail address? Click here for a solution: Manual Account Creation
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.


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.