Transfer Case Swap Info NP249->NP231 & NP242 - Page 15 - 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

XJ Rail Sale!The Ruffstuff NOT Universal 4 Link Kit!Vanco Big Brake Kit Promotion!

Reply
Unread 12-07-2010, 10:15 PM   #211
Tangfan
Registered User
1993 ZJ 
 
Join Date: Nov 2010
Location: Montgomery, AL
Posts: 38
93 ZJ I6 change out

Great thread, was very helpful. Some added information that I was unable to find. Swapped a 242 TC from a 96 ZJ with a 0.840" input shaft for oiginal 249 TC with a 0.750" input shaft in my 93 ZJ with a I6 engine. transmission had significant enough clearance so that added shaft length was no issue. Was not enough clearance to use a 1.55" shaft though.

Tangfan is offline   Reply With Quote Quick reply to this message
Unread 12-08-2010, 12:10 AM   #212
tednelson83
Registered User
1993 ZJ 
 
Join Date: Feb 2007
Location: Santa Clarita, CA, USA!!!!!!!!!
Posts: 529
that brings up an interesting question, if my 93 46rh uses a 1.55" input shaft, why can't i just use any case with out swapping them? why do i need to swap anything?
__________________
Wyotech Sacramento Alumni. ASE A6, A8, and L1 Certified. CA Smog License.
1993 Jeep Grand Cherokee Limited 5.2 4x4, IRO 3.5" lift, Spidertrax adapters, 32" BFG M/T's on 17" cragar soft 8's, Flowmaster muffler.
1987 Pontiac Fiero GT 2.8
Liberalism stems from the notion that it's entirely possible to pick up a turd by the clean end.
tednelson83 is offline   Reply With Quote Quick reply to this message
Unread 12-08-2010, 12:41 AM   #213
JrMechanic
Registered User
 
JrMechanic's Avatar
1993 ZJ 
 
Join Date: Oct 2008
Location: Lima, Ohio
Posts: 3,368
Quote:
Originally Posted by Tangfan View Post
Great thread, was very helpful. Some added information that I was unable to find. Swapped a 242 TC from a 96 ZJ with a 0.840" input shaft for oiginal 249 TC with a 0.750" input shaft in my 93 ZJ with a I6 engine. transmission had significant enough clearance so that added shaft length was no issue. Was not enough clearance to use a 1.55" shaft though.
I highly recommend against this. It may "seem" like you have enough clearance, however for all you know the transmission output shaft could be bottoming out on the transfer case input. This is BAD!! You need ample end play in the output shaft, or else you will eventually tear things up.

Ted, if you used say a .840" exposed shaft with the 46RH, the splines wouldn't fully engage, and the input shaft would not come into contact with the transmission output seal.
__________________
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 Quick reply to this message
Unread 12-08-2010, 02:27 PM   #214
Tangfan
Registered User
1993 ZJ 
 
Join Date: Nov 2010
Location: Montgomery, AL
Posts: 38
I thought about the end play clearance as well. The available clearance in the tranny was ~ 1.5". considering that amount of avaikable clearance, figured there should not be an issue. This amount of clearance might be due to a transmission swap in my 93 since I did buy it used and it has over 200,000 miles.
Tangfan is offline   Reply With Quote Quick reply to this message
Unread 12-08-2010, 05:33 PM   #215
PlatinumNiner
Web Wheeler
1998 ZJ 
 
Join Date: Oct 2009
Location: Long Island NY
Posts: 2,724
My 93 ZJ 4.0 AW4 has 237K miles on it. Tranny has never been rebuilt. Your 200K doesnt mean it was rebuilt. May very well still be OEM.
PlatinumNiner is offline   Reply With Quote Quick reply to this message
Unread 12-09-2010, 10:10 AM   #216
squazz
Web Wheeler
1993 ZJ 
 
Join Date: Jan 2010
Location: South Central, Pennsylvania
Posts: 2,202
so i just rebuilt my 231 that im gonna put in the ZJ lucky to get benzel and **** linkage off donar.So I did bearings seals and chain and SYE(in the hole for $500) getting ready to seal everything back up just aint totally sure where the magnet goes
squazz is offline   Reply With Quote Quick reply to this message
Unread 12-09-2010, 02:29 PM   #217
Virmagicus
Headed Out West
 
Virmagicus's Avatar
1998 ZJ 
 
Join Date: Feb 2006
Location: Northern Indiana
Posts: 6,428
Quote:
Originally Posted by squazz View Post
so i just rebuilt my 231 that im gonna put in the ZJ lucky to get benzel and **** linkage off donar.So I did bearings seals and chain and SYE(in the hole for $500) getting ready to seal everything back up just aint totally sure where the magnet goes


Look on the other TC half. There is a slot where the magnet goes.
Virmagicus is offline   Reply With Quote Quick reply to this message
Unread 12-09-2010, 03:45 PM   #218
csouers
Registered User
1999 XJ Cherokee 
 
Join Date: Feb 2008
Location: Bloomington, Indiana
Posts: 2,029
The AW4 in my old Cherokee had almost 400k miles when the Jeep was put out of commission. I never had a single problem with it. I would be willing to bet that yours is still running OEM parts.
__________________
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
csouers is offline   Reply With Quote Quick reply to this message
Unread 12-09-2010, 09:33 PM   #219
Breathe
Registered User
1996 ZJ 
 
Join Date: Apr 2010
Location: Western WA
Posts: 85
Thinking about getting me a 242 for Xmas, it should be a fun and educational project. Great info

I have a question though. I found an 88 XJ 242 on craigslist and as I understand, I can just swap in the driveshaft from the XJ, or will it be an uncompatable length since it's a different model? Since my 96 has the external slip yoke and the 88 most likely has internal.
Breathe is offline   Reply With Quote Quick reply to this message
Unread 12-09-2010, 10:00 PM   #220
squazz
Web Wheeler
1993 ZJ 
 
Join Date: Jan 2010
Location: South Central, Pennsylvania
Posts: 2,202
Quote:
Originally Posted by Virmagicus View Post
Look on the other TC half. There is a slot where the magnet goes.
so it dont go on the rod with the spring cuz thats what i was trying .thanks i'll check it out 2morrow
squazz is offline   Reply With Quote Quick reply to this message
Unread 01-01-2011, 01:09 AM   #221
ZebraZJ
Registered User
 
Join Date: Dec 2010
Location: Laramie, WY
Posts: 56
Thanks for a great write up. I just have one question. To swap a 231/242 into my 98 ZJ 5.2 249 I just need to find a 231/242 Tcase from the 96-98 XJ, TJ,ZJ and should work without any fuss. Or ??? The first post doesn't say anything about years of XJ or TJ T-case to use. Thanks

Tim
__________________
1998 Jeep Grand Cherokee Limited "Casper" 5.2 - stock for now
White jeep club #135
Colorado Jeep Club #212
US Air Force Jeep club #118
ZebraZJ is offline   Reply With Quote Quick reply to this message
Unread 01-01-2011, 07:22 PM   #222
PlatinumNiner
Web Wheeler
1998 ZJ 
 
Join Date: Oct 2009
Location: Long Island NY
Posts: 2,724
You can use a 242 from a 96-98 ZJ or 97-01 XJ and its a direct swap. When i did mine all i had to do was swap the speedo gears and sending unit from one to the other. Plugs were different and different tooth gear for a different gear ratio.
PlatinumNiner is offline   Reply With Quote Quick reply to this message
Unread 01-03-2011, 07:49 AM   #223
jlipka98zj
Registered User
1998 ZJ 
 
Join Date: Feb 2008
Location: Green River, Wyoming
Posts: 288
Swap finally done!

Finally got my swap done this weekend, thanks in large part to this thread.

I got really lucky in finding a transfer case. My buddy blew his 249 in his '98 Limited and was asking my advice on finding one. We looked at the local classifieds and couldn't find a decent 249 for his truck. What we did find, however, was a recently rebuilt (incl chain) 242 from a 2000 XJ with a Tom Woods SYE kit ALREADY INSTALLED. Guy only wanted $300 for it, too. Said that the case was fine, he just swapped to a 231 and was trying to get rid of it.

Talked him down to $275 and then split the difference with my buddy, as I told him I would give him my perfectly functional 249 that was in my 5.9 once I did the swap. So, all in all, I paid $140 for a rebuilt 242 with an SYE kit already installed. I feel like I got a good deal.

Just got to give Tom Woods a call this morning to get a new rear driveshaft on the way. I currently have a front-wheel-drive Jeep. So, I haven't been able to do the obligatory 2WD burnout yet, lol.

BTW, and I'm sure this information has been posted already, but I changed the transmission output seal while I was in there. It appeared as though my existing one was fine because it was bone dry in between the tranny and t-case, but I figured it was cheap insurance. The part number for this seal is 710058 (Timken). This is listed the same for 42RE and 46RE, so I6 or V8 shouldn't matter.

I also did the double-lip seal upgrade on the input seal of my t-case. Again, figured it was cheap insurance. Part number for this seal is 710928 (Timken). This is actually the input seal for a Chevy NP241 t-case. If that number doesn't work at your parts house, just have them look up the seal for a 1990 Chevy 1/2-ton pickup (4x4, obviously). This should yield the right seal. Take it out of the package for confirmation. It will be very obvious to you if the seal you get is a "double-lip" style.

Again, thanks for all the help on this thread!
jlipka98zj is offline   Reply With Quote Quick reply to this message
Unread 01-03-2011, 08:18 PM   #224
PlatinumNiner
Web Wheeler
1998 ZJ 
 
Join Date: Oct 2009
Location: Long Island NY
Posts: 2,724
Dont drive a V8 ZJ in front wheel drive. Your D30 wont last very long doing that. Are you lifted or stock height?
PlatinumNiner is offline   Reply With Quote Quick reply to this message
Unread 01-04-2011, 07:32 AM   #225
jlipka98zj
Registered User
1998 ZJ 
 
Join Date: Feb 2008
Location: Green River, Wyoming
Posts: 288
Quote:
Originally Posted by PlatinumNiner View Post
Dont drive a V8 ZJ in front wheel drive. Your D30 wont last very long doing that. Are you lifted or stock height?
Stock height right now. Don't worry, I'm not driving it around like that. Just drove it home from my buddy's gararge to my house like that. Never fear, it gives me an excuse to drive my other Jeep.
__________________
'98 5.9 Limited - Got some stuff done to it...
jlipka98zj 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.