2x4 AW4 to 4x4 AW4 Swap

[JACKED88]

Simply .... Is a 4x4 AW4 out of a 1994 XJ a direct fit for a 1988 2x4 MJ? Also, will a 1989 242 t/c bolt up to a 94 AW4 4x4 trans? If none of the above, what combination will work in an 88 MJ?

 

On another note; .... Whats up that local auto parts don't have our injector o-rings? They have um for 92 and up but not back. Whats everybody using? :dunno:

 

 

Additional info on trans swap. I figure by now most of yall know I'm converting a 88 2x4 MJ to 4x4. For tha most part everything is done other than installing an AW4 4x4 trans and t/case. Its currently running and driving with a 2x4 AW4.

Remember that 89 4x4 XJ Limited I bought as a trans and t/c donor? Well, I still havent decided if I wanna keep it in tact and sell it as a running vehicle or part it out and use the questionable AW4 thats in it. I say questionable because it has 170K miles on it and the fluid has a slight burnt smell to it. That and having driven it several times totaling about 50 miles I'm still not sure its shifting right. I figure it's still working good enough to make somebody a good huntin truck for several years but not good enough for a daily driver.

So ....... I found a guy who has a 1994 4x4 AW4 trans out of an XJ with just over 100k on it. (106,???) He claims it was a good working trans prior to removable. However, he doesnt have a 242 t/case to go with it.

Now, although the 1989 AW4 I have is questionable, I'm pretty sure the 1989 242 t/c I have is good. Back to my original question; are those to pcs compatible with each other? (a 1994 4x4 AW4 and a 1989 242 transfer case)

[shark]

the bell housing should be the same and the TCU is the same part number. don't see why it wouldnt work.

[JACKED88]

the bell housing should be the same and the TCU is the same part number. don't see why it wouldnt work.

Thanks! I know the electrical is an important part but I'm also concerned about tha spline counts.

 

Underlined below are some differences I found between tha two t/cases. A 1994 and a 1989 have several differences.

 

1991-1995 DTS208-3 NP242J Select-Trac, 23 spline input, 27 spline rear slip, .750" exposed input shaft, fixed front yoke, tow piece tail shaft housing, w/1.750 exposed input shaft, fixed front yoke, tow piece tail shaft housing, w/1.75" speedo hole, tow wire shift indicator "in speedo housing"

 

1989-1990 DTS208-1 NP242J Select-TRac, 21 spline input, 27 spline rear slip, tow piece tail housing, fixed front yoke, 1.750" speedo hole, tow wire shift indicator "on tail housing", .750 exposed input shaft.

 

A 94 AW4 and a 89 242 aint gonna work. :wall:

[Garvin]

What you can do, if you plan on keeping the 242, is find another and steal the input planetary out of it. I did this to a 231, swapped a trans from a '94 into my '90 and stole the input planetary out of the 231 that was matched to it. The other option is to just find the 242 from the newer 23 spline style.

 

The only reason I did mine is that I had a SYE installed in my 231 already.

[JACKED88]

Screw it. I'm thinkin I'll just take a chance on tha trans and t/case thats in the XJ. Not only is that tha most cost efficient for me right now, I know everything will bolt up. And who knows, I've had AW4's last over 250K. Maybe this one has more life left in it than I think. I'll do a service on it, replace tha seals and cross my fingers.

As for what to do with the XJ ..... My wifes brother needs something to drive for a while so I'll stick tha 2x4 trans thats currently in my truck in it keeping it drivable till I decide what to do with it.

 

 

Anybody got a rear drive shaft for MJ with a AW4?