Transfer Case Swap Info NP249->NP231 & NP242 - Page 156 - JeepForum.com

 9Likes
 
LinkBack Thread Tools
post #2326 of 3270 Old 08-14-2014, 05:15 PM
mandrews000
Registered User
1997 ZJ 
 
Join Date: Feb 2012
Posts: 373
Quote:
Originally Posted by Bigdogg View Post
I am new and have read this over and over it is great. I am going to the yard and getting a 231 my 249 cv is going. I gave read and am sure if I get the 96-01 XJ 231 it sounds line a direct swap. Who ever has done this if they could guide me I have to do this over the weekend and need it to at least drive in 2wd. I have a 98 grand 5.9 limited thanks.
I had to shorten my rear drive shaft about an inch and also my front.

mandrews000 is offline  
Sponsored Links
Advertisement
 
post #2327 of 3270 Old 08-14-2014, 06:08 PM
Bigdogg
Registered User
1998 ZJ 
 
Join Date: Aug 2014
Location: Wayland
Posts: 27
http://www.areds.com/wichita/Dodge•O...20CD.pdf#page3 here is a lot of t case info. I know it is from canada but here is another one http://www.canadawideparts.com/downl...ecatalogue.pdf
Bigdogg is offline  
post #2328 of 3270 Old 08-14-2014, 06:11 PM
Bigdogg
Registered User
1998 ZJ 
 
Join Date: Aug 2014
Location: Wayland
Posts: 27
When you shorten your d shaft can you just cut an inch of the splines? On the yoke.
Bigdogg is offline  
post #2329 of 3270 Old 08-14-2014, 06:52 PM
mrgimble
Registered User
2015 JK Wrangler 
 
Join Date: Aug 2007
Location: Halifax, Nova Scotia, Canada
Posts: 438
Quote:
Originally Posted by Bigdogg View Post
When you shorten your d shaft can you just cut an inch of the splines? On the yoke.
If you just cut an inch of the drive shaft yoke you will only prevent the drive shaft from hitting the transfer case. The transfer case output can still bottom out inside the yoke.
mrgimble is offline  
post #2330 of 3270 Old 08-14-2014, 07:16 PM
underpowered
Bouncin' on a Budget
 
underpowered's Avatar
1998 ZJ 
 
Join Date: Nov 2005
Location: northern kentucky
Posts: 3,037
Quote:
Originally Posted by Bigdogg View Post
When you shorten your d shaft can you just cut an inch of the splines? On the yoke.
No


you need to cut and re-weld the actual tube. easy to do with tools most already have in a decent garage. I have cut down over a dozen shafts and none have had any vibes or ill effects once done. The rear shaft in my ZJ DD was done just in my home garage with no special tools.

Best way it to cut the weld where the Yoke meets the tube, and the Yoke is actually inserted into the tube by 1/2" or so. tap it out with a deadblow hammer, cut the tube to desired length, clean up and re-insert the yoke, align it all properly and re-weld. Keep a good even weld and dont cut off any factory weights and it should be pretty well balanced.

1998 ZJ-- lowered a touch

2005 GMC 2500HD 496 C.I.

Fat Amy-1989 K5 blazer. Linked, lifted, 38.5's on won tons. Big Girls can play in the woods too.
underpowered is offline  
post #2331 of 3270 Old 08-14-2014, 10:42 PM
MurdaJs
Web Wheeler
1996 ZJ 
 
Join Date: Aug 2009
Location: Tustin
Posts: 3,294
Quote:
Originally Posted by underpowered View Post
No


you need to cut and re-weld the actual tube. easy to do with tools most already have in a decent garage. I have cut down over a dozen shafts and none have had any vibes or ill effects once done. The rear shaft in my ZJ DD was done just in my home garage with no special tools.

Best way it to cut the weld where the Yoke meets the tube, and the Yoke is actually inserted into the tube by 1/2" or so. tap it out with a deadblow hammer, cut the tube to desired length, clean up and re-insert the yoke, align it all properly and re-weld. Keep a good even weld and dont cut off any factory weights and it should be pretty well balanced.
I've heard to throw a shot or two of ATF in the tube to balance it. If I had a rotary setup for the driveshaft, I'd be less worried as the weld could be done in one smooth pass. But stopping, rotating, and restarting gives more opportunity for a uneven weld so I think I'm going to try the ATF trick next time
MurdaJs is offline  
post #2332 of 3270 Old 08-15-2014, 07:16 PM
underpowered
Bouncin' on a Budget
 
underpowered's Avatar
1998 ZJ 
 
Join Date: Nov 2005
Location: northern kentucky
Posts: 3,037
Quote:
Originally Posted by MurdaJs View Post
I've heard to throw a shot or two of ATF in the tube to balance it. If I had a rotary setup for the driveshaft, I'd be less worried as the weld could be done in one smooth pass. But stopping, rotating, and restarting gives more opportunity for a uneven weld so I think I'm going to try the ATF trick next time
Never tried the ATF trick, but i have heard of it before.

I try to minimize passes, i can usually do on in just 3 shots to keep the starts/stops to a minimum. i would love to be able to do it in just one pass, but i don't have a setup for that as most do not.

1998 ZJ-- lowered a touch

2005 GMC 2500HD 496 C.I.

Fat Amy-1989 K5 blazer. Linked, lifted, 38.5's on won tons. Big Girls can play in the woods too.
underpowered is offline  
post #2333 of 3270 Old 08-16-2014, 05:52 PM
ejschultz
Web Wheeler
 
ejschultz's Avatar
2001 TJ Wrangler 
 
Join Date: Feb 2010
Location: Cedar Lake
Posts: 3,444
You can cut the splines on the driveshaft if it's only a small amount. I did it. I've driven and wheeled it pretty hard that way for a couple years now. I have 0 vibes and have had 0 issues with it. I'm not saying it will work that well for you, but don't take "no" as your final answer. You'll be making a gamble cutting it; if it gets messed up, junk yard shafts are cheap anyway.

01 TJ - 4.0L, NV3550, 2" Skyjacker budget boost, Trail Gear front bumper, 31" Duratracs on 15x8s
ejschultz is offline  
post #2334 of 3270 Old 08-17-2014, 07:24 PM
Bigdogg
Registered User
1998 ZJ 
 
Join Date: Aug 2014
Location: Wayland
Posts: 27
Will the 231 speedometer gears work inplace of the 249 gears or can I put the 249 speedometer in the 231. Or did I miss this one in the write up.
Bigdogg is offline  
post #2335 of 3270 Old 08-17-2014, 08:56 PM
iann32
Registered User
1995 ZJ 
 
Join Date: Oct 2013
Location: naugatuck
Posts: 227
Quote:
Originally Posted by Bigdogg View Post
Will the 231 speedometer gears work inplace of the 249 gears or can I put the 249 speedometer in the 231. Or did I miss this one in the write up.
You put the 249 spedo in the 231. Thats what i did with my 231 swap. I think it even says to do so in the write up.
iann32 is offline  
post #2336 of 3270 Old 08-18-2014, 03:44 PM
Bigdogg
Registered User
1998 ZJ 
 
Join Date: Aug 2014
Location: Wayland
Posts: 27
That is what I thought I just picked up my 231. I found 1 with no oil on the case. Everything moved free. How much slack on the chain should there be. I have very little seems normal. It is from a 98 cherokee I looked at a 249 from a 98 and the length of the shaft looked the same also with 23 splines.
Bigdogg is offline  
post #2337 of 3270 Old 08-25-2014, 05:35 AM
thcheme
Registered User
1995 ZJ 
 
Join Date: Dec 2013
Location: richmond
Posts: 36
Dropped the 249 from my 95 this weekend. That 12 o'clock bolt was a pain in the you know what. After 30 minutes of every tool in the box, finally decided to drop the transmission cross brace. Was a lot easier with access. Now for the 242 front case swap and rebuild this coming weekend!

Oh, and ATF was running from the transmission when tilted down. Definitely needs a new seal.
thcheme is offline  
post #2338 of 3270 Old 08-26-2014, 09:26 AM
Bigdogg
Registered User
1998 ZJ 
 
Join Date: Aug 2014
Location: Wayland
Posts: 27
Got al new seals for my swap also.
Bigdogg is offline  
post #2339 of 3270 Old 09-01-2014, 08:14 AM
Rikoshay
Registered User
1998 ZJ 
 
Join Date: Oct 2013
Location: Big D
Posts: 163
In process of converting my 98GC 2wd to 4wd and got a 242 t-case. In Texas 4wd parts are a little more challenging to find in junkyards.

Found a really good tutorial on a Mustang forum on how to shorten a driveshaft at home with minimum tools. If the rear driveshaft that I got for it is slightly too long I'm going to give this a shot. Also installing an 8.8 axle so that's going to shorten the distance between yokes.

Pretty brilliant to check runout by bolting it up to the vehicle before welding, then welding it once it's set up with minimal runout.
http://www.fordmuscleforums.com/tran...riveshaft.html
Rikoshay is offline  
post #2340 of 3270 Old 09-01-2014, 10:42 AM
tsargent
Registered User
 
Join Date: Dec 2013
Posts: 16
I'm looking to swap a 231 into my zj with a bad 249. Yes i know, half of you are thinking why? Are you stupid? No it's what I want. I'm just curious, because the shift indicator sensor will not work from the 249 in the 231 how do you go around that? Do you hardwire the 231 plug in or could you even just forget about it because it isn't really that important anyways? Thank for the help guys
tsargent is offline  
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.



Email Address:
OR

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.




Currently Active Users Viewing This Thread: 3 (0 members and 3 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Jeep Forums Replies Last Post
NP231 vs. NP242 vs. NP249 offroader156 ZJ Grand Cherokee Forum 28 06-12-2016 07:40 PM
NP249 to NV249 Transfer case swap CDRFunkmeyer ZJ Grand Cherokee Forum 8 10-30-2009 12:39 PM
NP249 T-case dying & want to swap to a NP242 or NP231 IMin4Low ZJ Grand Cherokee Forum 15 10-02-2009 04:01 AM
UK NP249 Transfer Case Swap (+ PICS) UK Cherry ZJ Grand Cherokee Forum 4 07-12-2009 06:09 AM
NP249 to NP242 SWAP tb007 ZJ Grand Cherokee Forum 2 11-30-2004 11:50 AM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome