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JBConversions NP231 HD versus Advanced Adapters upgrades
http://www.lostjeeps.com/forum/phpBB3/viewtopic.php?f=3&t=66982
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Author:  Draco [ Sun May 20, 2012 11:09 pm ]
Post subject:  JBConversions NP231 HD versus Advanced Adapters upgrades

This is something I'm thinking about doing next year. I assume all NP231 t-cases and parts are interchangeable with NV231 t-case.

Option 1: JBConversions NP231 HD with SYE

http://www.jbconversions.com/products/np231j/complete_shortsye.php

Option 2: Rebuild stock NV231 with heavy duty planetary gear, heavy duty chain and sprocket, and slip-yoke eliminator.

http://www.advanceadapters.com/products/pn-29-2321/
http://www.advanceadapters.com/products/pn-29-2320/
http://www.advanceadapters.com/products/new-process-231j-fixed-yoke-kit/

Or is this a big waste of money until something breaks?

Maybe just a rebuild kit?

http://www.alljeep.com/oscommerce/product_info.php?products_id=172869

T-case has 97K miles on it now. I would wait until it had over 100K. Plan to get at least 50K more out of it.

Author:  tjkj2002 [ Sun May 20, 2012 11:14 pm ]
Post subject:  Re: JBConversions NP231 HD versus Advanced Adapters upgrades

If you've changed the t-case fluid and not abused the t-case like driving in 4hi/low on pavement or other drastic abuse the 231 will easily last 200k+.In most cases only the chain needs to be replaced if caught soon enough.

Author:  Draco [ Mon May 21, 2012 10:42 pm ]
Post subject:  Re: JBConversions NP231 HD versus Advanced Adapters upgrades

tjkj2002 wrote:
If you've changed the t-case fluid and not abused the t-case like driving in 4hi/low on pavement or other drastic abuse the 231 will easily last 200k+.In most cases only the chain needs to be replaced if caught soon enough.


I've changed the fluid and haven't abused it intentionally or otherwise. Thanks very much for the advice! I won't worry about any special transfer case maintenance or mods any time soon.

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