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post #1 of 3 Old 08-15-2002, 10:45 AM Thread Starter
BigMal13
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Transfer Case Swap

Here's the story: I have an '89 XJ. The stock transfer case is a NP231. I bought a wrecked XJ and put the motor and tranny/transfer case in mine. It has a NP242, which I understand is better?

Anyway, the front seal on the tranny is now leaking and it slips sometimes. I was going to put the original transmission back in, but with the NP242. My question is how hard is it to swap the transfer case? Is there a gasket or just sealant? If there's a gasket, would Autozone/O'reily's carry it?

I also noticed that the wiring is different for each transfer case. the 231 has two electric plugs and a three-pronged vacuum plug. The 242 only has one electric plug. Will I have to do any rewiring or anything?

If anyone has done this swap or knows what I need to do, your help will be greatly appreciated. Peace


'89 XJ Laredo
New 4.0L, AW4, NP231
2" Lift
30x9.5 Firestone Firehawk RMT
Rusty's K&N
Custom Exhaust
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post #2 of 3 Old 08-15-2002, 12:27 PM
EricsXJ
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Location: Reno, Nevada
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Re: Transfer Case Swap

Quote:
Originally posted by BigMal13
Here's the story: I have an '89 XJ. The stock transfer case is a NP231. I bought a wrecked XJ and put the motor and tranny/transfer case in mine. It has a NP242, which I understand is better?
The 242 is only "better" because it has a full-time option that you can engage for on-road use. Performance-wise, both transfer cases are the same for off-road in part-time 4-Hi or 4-Low.

Sorry I don't have any help to offer with the swap but I just wanted to mention that

Eric
2000 XJ "PROJECT RUBICON" 3-link front / 4-link rear / coilovers / running 37's on Dana 60s
My website - EricsXJ.com

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post #3 of 3 Old 08-15-2002, 12:55 PM Thread Starter
BigMal13
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Thanks for the info. I may just stick the 231 back in and save me some trouble.

'89 XJ Laredo
New 4.0L, AW4, NP231
2" Lift
30x9.5 Firestone Firehawk RMT
Rusty's K&N
Custom Exhaust
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