tkdtim

http://greenbay.craigslist.org/pts/1172616934.html

Any idea what that transfer case is? Looks like it could be a 231.
Its local, so if its a 231 i'd want to put it in my 1993. Anyone see any problems with that?

jd4x426

i would try emailing him and asking maybe he knows it hard to tell in the pictures get him to take a picture of the little round plate on the back right side of the transfer case that will tell you the model

TrekkerJmm

X2 on the little round plate, it should be silver and red...Tj

a1racer

it looks like a 231 but i would still have him look and see what it is first

lil'whiteXJ

My vote is NV231.

Billy

tkdtim

He confirmed the tag says 231J. Its comming from a 1998 and i have 93.
So, I figured out they should both be 23 spline, but what do you make of this?

Throughout the production run, input spline counts and other internal specs changed, and must be compatible with the transmission it's mated to. The later model cases (1996.5 and newer) changed styles of rear slip yoke to an internally sealed version.

Is this true with the 231, and will it cause problems with a swap?

OnlyInMyXJ22

You'll be fine. The rear slip yoke just has a small difference in the design.

OverlandZJ

That trans/transfer came out of an XJ, it's an AW-4 and NP transfer which he id'd as a 231. The tailcone tells you it's a 97+, making it 23 spline. It should bolt directly to your 93.

tkdtim

I picked it up today. Where is the 21/23 spline count?
I counted the splines on the rear output (to driveshaft) and it came up 27.....

Is the 21, 23 count somewhere else, or did I get a 27 spline NP 231J which i didnt think existed?

TY

OverlandZJ

The front input... where it mates to the rear output shaft on transmission. Theres 5 or 6 bolts/studs (circular pattern) that attach the transfer to trans.

23 spline input gear

hoopdaddy6

DAAAAAAAAHHHHHHHHHH!!!!!