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Old 05-03-2013, 08:38 PM
4x4Dad's Avatar
4x4Dad 4x4Dad is offline
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Join Date: Aug 19, 2008
Location: Yorba Linda, CA
Posts: 319
What's involved in NP229 --> NP242 swap?

My 229 transfer case just imploded, right after I passed smog (the Jeep gods know I got a bit of tax money back this year). As I drove home in 2wd, it sounded like my kids eating hard candy near a PA system. Quite ugly.

I've got a line on a local NP242 with SYE from a Grand Cherokee. I've confirmed its a 23 spline, so I think it should bolt up to my TF727 okay.

But I'm not sure what I need to do beyond that.

I've read nearly every forum thread on NP242s, but I'm feeling in the dark still, so i felt I needed to post a thread. I know the rear drive shaft will need an adapter, at minimum, to bolt to the SYE, but will I have to buy an all new shaft? Is there an adapter that will allow my stock rear shaft to bolt up? Is there an XJ or ZJ shaft that I could use instead? (I'm assuming not because of the slip yoke feature, but I'd love to be corrected.)

What will I have to do differently to the front shaft?

A reman 229 is out of my budget range (upwards of $800 with tax), whereas the 242 with SYE is local and only $250.

Any insight/advice/experience you can provide would be great.
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Tucker

88 GW, AMC 360 with Doug Thorley headers, Howell TBI, NP242, TF727, 3.31 gears and the tow package, Magnaflow muffler and cat, BJ's 4" springs + 2" blocks and 1" shackles, and 1" body lift, 32" BFG's, aluminum rad, K20 front brake calipers.
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