NP 231 Rebuild and install SYE -
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Go Back > General Technical Discussions > Engines & Drivetrain > NP 231 Rebuild and install SYE Sale EventSummer is Over! Time for a saleIntroducing MONSTALINER™ UV Permanent DIY Roll On Bed Line

Unread 10-29-2012, 06:20 PM   #1
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1992 YJ Wrangler 
Join Date: Oct 2012
Location: La Porte, Texas
Posts: 45
NP 231 Rebuild and install SYE

So just curious how many have done this? And is this something some one can do at home. Found a jbconvertions kit Sye is 200 rebuild kit is 200 is this a good deal?

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Unread 10-29-2012, 06:24 PM   #2
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1994 YJ Wrangler 
Join Date: Aug 2009
Location: Lexington,SC
Posts: 1,822
It's almost a requirement for a jeep lifted 4". Medium difficulty...but made easier by lots of write-ups and youtube videos. It's all nuts and bolts. Not that hard really.
1994 YJ Wrangler, 4.0, AX15, NP231, 35x12.50x15 BFG KM2s, 4" RC lift, 1" lift Boom Shackles, 1" BL, 4.10 gears, 8.8 LSD in rear and D30 Aussie Locker in front, on-board air conversion, Ramsey RE8000 winch.
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