95yeti

i need to know if a np231 out of a 87 mj will work for q 95 xj both have the 4.o and are auto

OverlandZJ

no.. 21 spline on MJ and 23 spline on 95

OverlandZJ

Actually, you could also use the MJ's trans as well..

95yeti

dang i was hoping it would work yea i could use the trans but i dont wanna pay for the trans to

OverlandZJ

Last option would be to swap the input gear.. feel comfortable totally tearing down a transfer and reassembling it?

95yeti

thanks though

89Laredo

You need the Tcase from something 91+

95yeti

ok thanks dylan did you find that info for me yet

95yeti

will this work for my jeep http://detroit.craigslist.org/okl/pts/1580838038.html

OverlandZJ

yes

95yeti

cool thanks

housew

the spline count is the spline count of the input shaft correct? this has been confusing me for a while. I have a 99 auto with an np231 which i gather is a 23 spline, I can get a great deal on an np231 from an 87 manal with a tom woods sye kit. I would assume the 87 being older than 91 has a 21 spline shaft? but would it be different cause its manual?

I know the sye replaced the output shaft, and im not affraid of tear'n into it, so could I gank the aftermarket output shaft / sye out of the 87 and slap it in my 99 case? Or do i just sit back and watch the case go to someone else... or put my 23 spline input gear into that case... I just need to know if i can peice one together.

superj

i have had to change input and output gears on t-cases to use older ones in other jeeps.

crazyXJgirl

AFAIK,
as long as it has teh AX-15 manual it will have a 23 spline shaft. If it is the AW4 or anything other than the AX-15 in the 87 than it is most likely a 21.

(defiance665... Dont feel like signing back in)