NAXJA Forums -::- North American XJ Association  

Go Back   NAXJA Forums -::- North American XJ Association > NAXJA Unibody Jeep Technical Forums > Jeep Cherokee XJ (1984 - 2001) > Modified Tech Discussion
HOME Member FAQ Sponsor Info Rules Bylaws E-Mail

Modified Tech Discussion Forum for Tech related discussion for Modified XJ's and MJ's.

Reply
 
Thread Tools Display Modes
  #1  
Old November 30th, 2016, 20:55
hjeepxj's Avatar
hjeepxj hjeepxj is offline
NAXJA Member
 
Join Date: Mar 2003
Location: Lochbuie, CO
Posts: 2,026
231 VS 242 and a sad, funny story

I have been accumulating some parts for my new build and I just took delivery of my TNT long arm kit today. As I'm getting the pack list out, I read I ordered the one for the 231 Tcase...for some reason, now, after I have already taken delivery of the LA kit, I say to myself "let's verify the Tcase is a 231"...it's a 242...

F'ing assumptions. I can't believe I bone headed that. LOL. Life goes on.

Reason for my post - what are the physical differences? It appears that it may only be the Tcase skid part of the new x-member that is different....is this the case? OR will I need to ship back the whole x-member?



One of my first thoughts also was to find a 231 and swap it in to avoid having to switch x-members, however after some quick research it appears the 242 is a little more versatile. Is this information correct:

"The difference is that the 242 has an extra differential component to it.
The 231 forces the front and rear tires must turn at the same speed. Bad for dry surfaces. PART TIME.

The 242 allows the front and rear tires to turn at different rates from each other because of the differential in the middle of the transfer case. FULL TIME" ?

End goal in a year or two will be an Atlas II, FWIW.
__________________
2000 XJ 5.5" Lift w/Deavers and TNT arms, 30 front w/Super 30 kit, ARB, truss, etc. 44 rear w/35 spline alloys, ARB, Wilwood discs, truss, etc. Hooligan stiffeners front to rear, Hooligan fenders, Trailready front bumper, JCR rear bumper w/tire carrier. *under construction*
Reply With Quote
  #2  
Old November 30th, 2016, 21:37
ehall's Avatar
ehall ehall is offline
NAXJA Member
 
Join Date: Dec 2007
Location: Southern Maryland
Posts: 8,898
Re: 231 VS 242 and a sad, funny story

The outer case of the 242 is larger (stronger). It will hang a little lower. You may need to get a new center

As for the other question, yes the 242 has an additional AWD mode that allows the wheels to turn at different speeds, which is wonderful on the street in rain and snow, and also handy on tight trails that don't require 4-Low
__________________
.
my '91 beater rebuild
Reply With Quote
  #3  
Old December 1st, 2016, 05:03
Tim_MN's Avatar
Tim_MN Tim_MN is offline
Freakish Hand Strength
 
Join Date: Mar 2003
Location: Minneapolis, MN
Posts: 5,902
Re: 231 VS 242 and a sad, funny story

231 can have a Hack n Tap or a HD SYE. 242 only can do Tom Woods or Hack n Tap SYE.
__________________
.
.

Quote:
Originally Posted by bimmerjeeper

Blanket caught in the rear liftgate latch. Now I can't open.
.
Reply With Quote
  #4  
Old December 1st, 2016, 06:57
hjeepxj's Avatar
hjeepxj hjeepxj is offline
NAXJA Member
 
Join Date: Mar 2003
Location: Lochbuie, CO
Posts: 2,026
Re: 231 VS 242 and a sad, funny story

Quote:
Originally Posted by ehall View Post
The outer case of the 242 is larger (stronger). It will hang a little lower. You may need to get a new center

As for the other question, yes the 242 has an additional AWD mode that allows the wheels to turn at different speeds, which is wonderful on the street in rain and snow, and also handy on tight trails that don't require 4-Low
Okay, thank you for the info. Just as I suspected, hopefully I can just switch the Tcase skid part of the TNT arm set - I'll post the verdict back here.

Quote:
Originally Posted by Tim_MN View Post
231 can have a Hack n Tap or a HD SYE. 242 only can do Tom Woods or Hack n Tap SYE.
You are a wealth of knowledge.

I had read this, if I was keeping the tcase long run and not looking to do an Atlas II, I would take this in to consideration.

Good news is the hack-n-tap I ordered from IRO will most likely work.
__________________
2000 XJ 5.5" Lift w/Deavers and TNT arms, 30 front w/Super 30 kit, ARB, truss, etc. 44 rear w/35 spline alloys, ARB, Wilwood discs, truss, etc. Hooligan stiffeners front to rear, Hooligan fenders, Trailready front bumper, JCR rear bumper w/tire carrier. *under construction*
Reply With Quote
  #5  
Old December 1st, 2016, 08:47
cal's Avatar
cal cal is offline
NAXJA Warranty Voider
 
Join Date: Nov 2004
Location: Hammertown, USA
Posts: 16,821
Re: 231 VS 242 and a sad, funny story

I would swap a 231 in. They don't have as many features and are mathematically not as strong, but in practice they are more reliable and less expensive to do an SYE on, which it sounds like you are going to require.
__________________
I'm not a complete idiot - there are parts missing.
Reply With Quote
  #6  
Old December 1st, 2016, 08:47
1990JEEPXJ's Avatar
1990JEEPXJ 1990JEEPXJ is offline
NAXJA Member
 
Join Date: Nov 2006
Location: San Diego
Posts: 2,765
Re: 231 VS 242 and a sad, funny story

I would try and see if the skid comes with enough room to fit with the 242. The actual size difference is surprising though. So you may have to swap something.

Reply With Quote
  #7  
Old December 1st, 2016, 09:23
ehall's Avatar
ehall ehall is offline
NAXJA Member
 
Join Date: Dec 2007
Location: Southern Maryland
Posts: 8,898
Re: 231 VS 242 and a sad, funny story

Quote:
Originally Posted by Tim_MN View Post
231 can have a Hack n Tap or a HD SYE. 242 only can do Tom Woods or Hack n Tap SYE.
AA has a real SYE kit for the 242, I have it in mine

http://www.advanceadapters.com/produ...ixed-yoke-kit/
__________________
.
my '91 beater rebuild
Reply With Quote
  #8  
Old December 1st, 2016, 10:07
Ghost's Avatar
Ghost Ghost is offline
Member Number 257
 
Join Date: Jun 2002
Location: Hartsville, South Carolina
Posts: 16,793
Re: 231 VS 242 and a sad, funny story

Does the 242 have a 6 gear set or 3?
__________________
"...I need to wheel to be rejuvenated to fix things to wheel. It's a vicious cycle, but I love it."
Rick Pewe Ed: Petersons 4 Wheel and Off Road
member since 3/05/2001
Reply With Quote
  #9  
Old December 1st, 2016, 14:24
srb531 srb531 is offline
NAXJA Forum User
 
Join Date: Jun 2014
Location: annapolis, md
Posts: 117
Re: 231 VS 242 and a sad, funny story

it is only the bolt on rear part for the t case.my tnt kit came w/ the 231 skid & i have a 242 , it only took some minor adjustments to make it work. the 242 skid will hang lower then the 231 one.
Reply With Quote
  #10  
Old December 1st, 2016, 16:54
ehall's Avatar
ehall ehall is offline
NAXJA Member
 
Join Date: Dec 2007
Location: Southern Maryland
Posts: 8,898
Re: 231 VS 242 and a sad, funny story

Quote:
Originally Posted by Ghost View Post
Does the 242 have a 6 gear set or 3?
The stock low range planetary is the same 3 pinion setup as the 231 but you can use the 4 or 6 pinion planetaries from ebay (I did).

The AWD differential also uses planetary gears. Early models used 6 pinions, layer models used 3. I have only had one 6 pinion differential, very uncommon and hard to find in good condition.

Sent from my SM-G935V using Tapatalk
__________________
.
my '91 beater rebuild
Reply With Quote
  #11  
Old December 1st, 2016, 20:34
hjeepxj's Avatar
hjeepxj hjeepxj is offline
NAXJA Member
 
Join Date: Mar 2003
Location: Lochbuie, CO
Posts: 2,026
Re: 231 VS 242 and a sad, funny story

Quote:
Originally Posted by cal View Post
I would swap a 231 in. They don't have as many features and are mathematically not as strong, but in practice they are more reliable and less expensive to do an SYE on, which it sounds like you are going to require.
It's just not worth it IMO (for my situation). I did confirm with Iron Rock that the Hack and Tap SYE that was on a great sale ($60) for Black Friday will work on a 242. Most likely, an Atlas II will be going in to this Jeep next winter...I just don't want to spend toooo much energy dinking around with swapping in a 231.

Quote:
Originally Posted by 1990JEEPXJ View Post
I would try and see if the skid comes with enough room to fit with the 242. The actual size difference is surprising though. So you may have to swap something.
Great reference pic! They are quite a bit bigger!

Quote:
Originally Posted by srb531 View Post
it is only the bolt on rear part for the t case.my tnt kit came w/ the 231 skid & i have a 242 , it only took some minor adjustments to make it work. the 242 skid will hang lower then the 231 one.
GOOD INFO! This is exactly what I was looking for. What were the adjustments you had to make?
__________________
2000 XJ 5.5" Lift w/Deavers and TNT arms, 30 front w/Super 30 kit, ARB, truss, etc. 44 rear w/35 spline alloys, ARB, Wilwood discs, truss, etc. Hooligan stiffeners front to rear, Hooligan fenders, Trailready front bumper, JCR rear bumper w/tire carrier. *under construction*
Reply With Quote
  #12  
Old December 2nd, 2016, 11:58
cal's Avatar
cal cal is offline
NAXJA Warranty Voider
 
Join Date: Nov 2004
Location: Hammertown, USA
Posts: 16,821
Re: 231 VS 242 and a sad, funny story

Quote:
Originally Posted by hjeepxj View Post
It's just not worth it IMO (for my situation). I did confirm with Iron Rock that the Hack and Tap SYE that was on a great sale ($60) for Black Friday will work on a 242. Most likely, an Atlas II will be going in to this Jeep next winter...I just don't want to spend toooo much energy dinking around with swapping in a 231.
If you plan on putting an atlas in later, I'd get the crossmember for the 242 before you start.

That's a LOT bigger, and won't fit over the 231 one.
__________________
I'm not a complete idiot - there are parts missing.
Reply With Quote
  #13  
Old December 2nd, 2016, 12:15
hjeepxj's Avatar
hjeepxj hjeepxj is offline
NAXJA Member
 
Join Date: Mar 2003
Location: Lochbuie, CO
Posts: 2,026
Re: 231 VS 242 and a sad, funny story

Quote:
Originally Posted by cal View Post
If you plan on putting an atlas in later, I'd get the crossmember for the 242 before you start.

That's a LOT bigger, and won't fit over the 231 one.
Very good point, gracias.
__________________
2000 XJ 5.5" Lift w/Deavers and TNT arms, 30 front w/Super 30 kit, ARB, truss, etc. 44 rear w/35 spline alloys, ARB, Wilwood discs, truss, etc. Hooligan stiffeners front to rear, Hooligan fenders, Trailready front bumper, JCR rear bumper w/tire carrier. *under construction*
Reply With Quote
  #14  
Old December 3rd, 2016, 06:21
ehall's Avatar
ehall ehall is offline
NAXJA Member
 
Join Date: Dec 2007
Location: Southern Maryland
Posts: 8,898
Re: 231 VS 242 and a sad, funny story

Quote:
Originally Posted by ehall View Post
The AWD differential also uses planetary gears. Early models used 6 pinions, layer models used 3. I have only had one 6 pinion differential, very uncommon and hard to find in good condition.

Sent from my SM-G935V using Tapatalk
Should not post while on the road. The differentials all used 3 pinion gears, but the early models used 6 bolts to hold the planetary together, while later models only used 3 bolts
__________________
.
my '91 beater rebuild
Reply With Quote
  #15  
Old December 3rd, 2016, 07:56
hjeepxj's Avatar
hjeepxj hjeepxj is offline
NAXJA Member
 
Join Date: Mar 2003
Location: Lochbuie, CO
Posts: 2,026
Re: 231 VS 242 and a sad, funny story

UPDATE: I called TNT after thinking about what Cal said. I got lucky - TNT is coming down to CO for the Christmas Caravan - they offered to bring the 242 tcase skid with to swap me.

TNT rocks!
__________________
2000 XJ 5.5" Lift w/Deavers and TNT arms, 30 front w/Super 30 kit, ARB, truss, etc. 44 rear w/35 spline alloys, ARB, Wilwood discs, truss, etc. Hooligan stiffeners front to rear, Hooligan fenders, Trailready front bumper, JCR rear bumper w/tire carrier. *under construction*
Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not 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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Funny story... RTicUL8 Political Discussion Zone 3 October 30th, 2008 14:47
funny story XJelmo9 Intermountain Chapter 5 February 22nd, 2008 09:37
funny story Gravesdiggerxj Intermountain Chapter 5 February 15th, 2008 09:54
Funny SYE Story M4Madness Modified Tech Discussion 4 February 17th, 2007 22:15
funny story 2offroad Non-Tech / Off Topic 1 October 20th, 2004 07:13


All times are GMT -7. The time now is 09:04.


Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
NAXJA and NAXJA logo's Copyright NAXJA. All content/images Copyright NAXJA 1999-2014