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NP 231

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Old 03-20-2014, 01:42 PM
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Year: 1991
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Engine: 4.0 L, 242 CID
Default NP 231
I am so lost and confused. I have an np231 in my 95 xj (auto) that sounds grenaded, wont stay in 4x4 , and needs to be repaired or replaced. any pointers on where to start?, IE, is it even worth rebuilding one (i know, hard to say w/out seeing whats goin on inside it) or should i just find a pickNpull and swap. if so, what will fit? and or, what can i expect to find inside mine and is the rebuild even worth tackling?

cost, as always, is absolutely an issue.
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Old 03-20-2014, 02:24 PM
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I think if you rebuild one, go to picknpull and get one and rebuild that, Keep that jeep driveable until your ready to put it in
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Old 03-20-2014, 04:08 PM
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Originally Posted by PurpleToxin505
I think if you rebuild one, go to picknpull and get one and rebuild that, Keep that jeep driveable until your ready to put it in
and with that in mind, what fits?
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Old 03-20-2014, 04:16 PM
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Originally Posted by A55MULL3T
and with that in mind, what fits?
Anything above 1990 I have a 2000 in my 89 behind a nv 3550 everthing from my 89 231 hooked right up.
Last edited by freegdr; 03-20-2014 at 04:26 PM.
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Old 03-21-2014, 12:08 AM
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sweet. that makes the list at PnP a little longer.
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Old 03-21-2014, 12:25 AM
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Originally Posted by A55MULL3T
sweet. that makes the list at PnP a little longer.
B4 removing one I suggest pulling drain plug ans sticking finger in and make sure theres no metal/garbage sitting in the bottom . Be a real pain to bring home one with unseen issues.
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Old 03-22-2014, 10:59 PM
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Originally Posted by freegdr
B4 removing one I suggest pulling drain plug ans sticking finger in and make sure theres no metal/garbage sitting in the bottom . Be a real pain to bring home one with unseen issues.

so many bad jokes in here...
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Old 03-23-2014, 07:06 AM
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If you're getting a 97 and newer tcase, I believe the driveshaft is a little shorter.
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Old 03-23-2014, 12:43 PM
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Originally Posted by skife
If you're getting a 97 and newer tcase, I believe the driveshaft is a little shorter.
ill make some measurements and take pics before going. ty
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