btm24 Posted April 3, 2011 Posted April 3, 2011 I'm wondering if I'm going to run into any problems if I put a 91 XJ 4wd transmission in with a 96 t case? The transmission is a auto AW4 and the t case is a NP231. Will they fit together? Or should I pass on it? Thanks Brandon
Geonovast Posted April 3, 2011 Posted April 3, 2011 Unless the 96 NP231 came from behind an AX-5, you should be fine. That 96 probably has a sealed output, so it's going to affect driveshaft length.
btm24 Posted April 4, 2011 Author Posted April 4, 2011 Ok cool. Some one else also told me that I need to check the output spline count on the tranny and the input spline count on the t-case because the older XJ's have 21 spline, newer is 23 spline, So ill also make sure they fit before I buy it. Thanks for the help Brandon
Geonovast Posted April 4, 2011 Posted April 4, 2011 Pukeys are 21 spline. AX-15s are 23. Older AW-4s are 21, newer ones are 23. I believe the changeover was 1990.
btm24 Posted April 4, 2011 Author Posted April 4, 2011 Pukeys are 21 spline. AX-15s are 23. Older AW-4s are 21, newer ones are 23. I believe the changeover was 1990. So that means that any thing "newer" would be after 1990? and some one else said somthing about needing the TCU from the vehicle the tranny comes from is this true? Brandon
Geonovast Posted April 4, 2011 Posted April 4, 2011 Yes, "newer" would be 91+. And yes, you'll need the HO TCU to put the 91 AW-4 in your 89.
NewfieMJ Posted April 4, 2011 Posted April 4, 2011 Check the speedo connections . That 96 t-case will have a speed sensor/electric speedo , I think your MJ has a cable ?
btm24 Posted April 4, 2011 Author Posted April 4, 2011 Ok so both the AW4 tran and the t case came out of the same 91 XJ. Do I still need the TCU? What about the speedo? And does it mater what size motor the XJ had? Brandon
Geonovast Posted April 4, 2011 Posted April 4, 2011 Speedo won't be an issue. Unscrew the electronic part from the 91 T-case, and your cable will screw right on. Is this for a 4wd swap? If so, you may need a longer speedo cable. Yes, it matters what motor the AW-4 came from. Due to the extremely low amount of 2.5/AW-4 combos made, I'm guessing it's from a 4.0. If it's from a 2.5, the bellhousing and converter will be different, as will the TCU, and I believe the trans itself will be set up differently. What happened to the 96 T-case?
btm24 Posted April 4, 2011 Author Posted April 4, 2011 Speedo won't be an issue. Unscrew the electronic part from the 91 T-case, and your cable will screw right on. Is this for a 4wd swap? If so, you may need a longer speedo cable. Yes, it matters what motor the AW-4 came from. Due to the extremely low amount of 2.5/AW-4 combos made, I'm guessing it's from a 4.0. If it's from a 2.5, the bellhousing and converter will be different, as will the TCU, and I believe the trans itself will be set up differently. What happened to the 96 T-case? Yes it is for my 4x4 swap. i don't think that the speedo hooks up to the t case tho :dunno: Why would I need a longer speedo cable? I'm also sure it came behind the 4.0 I just wanted to know if it would fit if by chance it did come behind a 2.5. When I called the guy today he said that he has a t case that came out of the same truck that the AW4 came out of. So I'm also guessing that its a NP231? Thank you for the help Brandon
mvusse Posted April 4, 2011 Posted April 4, 2011 With a 4wd truck, the speedo hooks up to the rear output of the transfer case instead of the transmission. Since that is further back you may need a longer cable.
Geonovast Posted April 4, 2011 Posted April 4, 2011 91 could be either an NP231 or NP242. Obviously you'll need the shifter handle/gate/linkages that go with it. As mvusse said, the speedo cable hooks up to the tail housing of the transfercase. There's a good chance your 2wd speedo cable will not reach.
btm24 Posted April 5, 2011 Author Posted April 5, 2011 Ok thats all fine with me having the speedo cable out gives me the push to do the gauge cluster swap + new parts are always good. So I already have the handle/gate but Ill still need to get the linkage. So all I need to do is make sure that the AW4 was behind a 4.0, make sure the t case is a 231 and fits the AW4 (same spline count), the 1991 TCU and maybe a new speedo cable. Am I missing any thing or is that all? I want to make sure I have all the facts straight before I go and start to pull out cash. Brandon
mj Mike Posted April 5, 2011 Posted April 5, 2011 i had problem find the stock linkage @ the junk yard's i went with the novak adaptors shift linkage & shifter http://www.novak-adapt.com/catalog/shifters/sk2x.htm it's big money so try to find your linkage. but it's a option?
btm24 Posted April 6, 2011 Author Posted April 6, 2011 i had problem find the stock linkage @ the junk yard'si went with the novak adaptors shift linkage & shifter http://www.novak-adapt.com/catalog/shifters/sk2x.htm it's big money so try to find your linkage. but it's a option? Yeah I the linkage for a 231 I got from a member on here I just for got about it :fool: Thanks for the link tho it looks beefy. Brandon
Geonovast Posted April 6, 2011 Posted April 6, 2011 Yeah I the linkage for a 231 I got from a member on here I just for got about it :fool: Thanks for the link tho it looks beefy. Brandon The linkage you got is for a 4.0/auto/231, yes? Manual or 2.5 linkages won't work.
mj Mike Posted April 6, 2011 Posted April 6, 2011 The linkage you got is for a 4.0/auto/231, yes? Manual or 2.5 linkages won't work. this is why i could not find it. Because you need to match engine, trans & transfer case to your application?
btm24 Posted April 7, 2011 Author Posted April 7, 2011 From what I remember yes its a 4.0 231 auto linkage ill check to make sure tho. So do I have every thing I need correct? Brandon
btm24 Posted April 8, 2011 Author Posted April 8, 2011 Ok so I checked and the shifter is out of a 4.0 HO / AW4 / 231 rig. SO... will that still work? Brandon
Geonovast Posted April 8, 2011 Posted April 8, 2011 Speedo won't be an issue. Unscrew the electronic part from the 91 T-case, and your cable will screw right on. Is this for a 4wd swap? If so, you may need a longer speedo cable. Yes, it matters what motor the AW-4 came from. Due to the extremely low amount of 2.5/AW-4 combos made, I'm guessing it's from a 4.0. If it's from a 2.5, the bellhousing and converter will be different, as will the TCU, and I believe the trans itself will be set up differently. What happened to the 96 T-case?
btm24 Posted April 9, 2011 Author Posted April 9, 2011 Speedo won't be an issue. Unscrew the electronic part from the 91 T-case, and your cable will screw right on. Is this for a 4wd swap? If so, you may need a longer speedo cable. Yes, it matters what motor the AW-4 came from. Due to the extremely low amount of 2.5/AW-4 combos made, I'm guessing it's from a 4.0. If it's from a 2.5, the bellhousing and converter will be different, as will the TCU, and I believe the trans itself will be set up differently. What happened to the 96 T-case? Yeah I missed that :fool:
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