gyrator930

Anyone have any advice on where I can get a rebuilt np 231 transfer case with an sye installed? I know I can do all that myself but I already rebuilt my case once and I'm still having issues so I'm looking to buy a rebuilt or remanufactured one

SteveMongr

Here is one.
https://www.cherokeeforum.com/f72/np...-chain-192319/

jeep96cherokee

Quadratec has a selection of sye np231 between 1400 and 1600 plus a 350 core charge depending on your motor and tranny combo. Heres one for 97-01 with an auto tranny: http://www.quadratec.com/products/52252_009.htm.

SteveMongr

Can get a whole jeep for that kind of coin.

XJwonders

what year is your jeep? I have one with a SYE for sale

SteveMongr

His is 2001 for all you mobile users.
I linked your ad in post #2

XJwonders

ah. Won't work. It's a early np231.

gyrator930

It's a 2001. I'm in IL though, how much for shipping?

gyrator930

Darn, I was liking your prices

XJwonders

well it could probably work but there's no 4wd sensor on it. When u shift into 4wd. U wouldn't see any light pop up on the dash

SteveMongr

I purchased a fully remanufactured 242 for $500 then did a hack-n-tap SYE. Did not have to open the case. If you get reman, ask about what is done. Not all places will replace every bearing and seal.
http://www.manual-transmission.com/

SteveMongr

What year is that off of? I thought all of them have a threaded hole for the sensor. Is it the internal portion that is missing?

XJwonders

the hole had never been drilled and tapped for the sensor. It is a 1991 case. It used to have the vacuum harness on it before I removed it for the SYE.

The way I figure, when you pull on the lever to engage the 4x4, the vacuum engages the front axle shaft and there's probably a sensor there that lights up the 4x4 on the dash.

gyrator930

How do you like the hack n tap? Seem to be holding up okay?

SteveMongr

It's been 4 years and no issues. It's my daily driver and joyrider. I jump it, drop it off ledges and like to drive it rally style when offroad.
Main difference is the internal SYE uses a HD yoke and the double cardon joint sits much closer to the body of transfer case.