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Swapping 231 and 242 t-case.


 
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kaos
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Joined: 10 Jan 2006
Location: Iceland

PostPosted: Sun Feb 05, 2006 4:43 am    Post subject: Swapping 231 and 242 t-case. Reply with quote

Okay, so I bought myself a '93 Cherokee. Very Happy Only 145000 km on the clock, very little rust, and got it at a good price.

But, it has the 231 t-case, and I had rather set my sights on the 242. My question therefore is; how much of a problem is swapping it out with a 242? So far, I have got conflicting information. Rolling Eyes One shop that specialises in Jeeps said that if I got a 242 from a '91 or later it would bolt right on, and the only problem would be that the lever wouldn't be correctly marked. Another shop, also specialising in Jeep, said that I would at least have to change the rear driveshaft, possibly the front one, and the whole shift lever assembly. Sad

Also, I understand that the reason that pre-'91 cases will not bolt right on, is a difference in the intake shaft. I have however seen writeups for swapping the 248 case (in the Grand Cherokee) with both 231 and 242 cases, and there it said to just transplant the intake shaft from the old case to the new. Does that mean that I could do this with a pre-'91 242 case and get it to fit? (I've got an older model 242 case lined up at a reasonable price.)

With thanks beforehand,

--
Kári in Iceland
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ThePhantum
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Joined: 23 Jan 2004
Location: I knew it...I'm surrounded by Assholes!

PostPosted: Mon Feb 06, 2006 4:11 pm    Post subject: Reply with quote

Any 91 and up 242 t-case should bolt right in, but 91-95's would be a perfect fit for the driveshafts.

As for swapping the input shafts on older 242's, I have no first hand experiance with it so I'll defer to someone who does.

The front driveshaft shouldn't be a problem. As far as I know they were all exactly the same from 87-01.

The rear driveshaft length shouldn't be a problem either. As long as it's not a 96 and up t-case. Those model years had a design change to the slip yoke and your driveshaft would not fit.

As for the shift lever, it would be best to obtain the entire linkage/lever assembly from the donor vehicle. The 231 lever should work...but I'm not sure.

HTH
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kaos
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Joined: 10 Jan 2006
Location: Iceland

PostPosted: Thu Feb 09, 2006 1:08 am    Post subject: Reply with quote

Thanks. Actually there seems to have been some misunderstanding about the age of the t-case I had in mind. According to the ID plate it is a 91 model, and should therefore drop right in. Very Happy The original shifter has been thrown out, but I'm guessing we can fabricate something, if neccessary.

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Kári in Iceland
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