1998 5.9 TCase in 1998 5.2 ok as long as gear ratio same? - JeepForum.com
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Unread 10-19-2009, 10:06 AM   #1
antwon412
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1998 5.9 TCase in 1998 5.2 ok as long as gear ratio same?

The VC in my Tcase has gone bad on my 1998 5.2 Grand Cherokee Limited.

Found a guy online who has one out of a 1998 5.9. If the gear ratio is ok, will that be a direct swap?

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Unread 10-19-2009, 10:25 AM   #2
antwon412
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so Im told the gear ration doesnt matter when swapping out the transfer case. OK.

So is it ok to put in the 5.9 TC in my 5.2 vehicle? Everything will line up?
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Unread 10-19-2009, 10:32 AM   #3
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Why would you want to get the same TC (249) when the VC may be bad or going out as well? Get a 242 or 231 TC. Search on the forum about the swap.
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Unread 10-19-2009, 10:40 AM   #4
antwon412
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From reading here I was under the impression that if you swapped out with a 242 you had to crack it open and change some of the internals?

Forgive me if Im wrong. Being new to this the pure overload of information i found may have confused me. Since I dont have any specialty tools or the knowledge needed to do that I was looking to simply remove the old unit and bolt in a new one?

Did i get it wrong?

I obviously would rather have a stronger unit. But from what i read, the 242 offered...Selct a Trac (or something close to that) that offered you 2wd as well as 4wd and 4lo so you had to do some more specialized work.

Again please forgive my stupid questions and ignorance. Just a lot of information to take in.
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Unread 10-19-2009, 10:47 AM   #5
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The input shaft on the 242 should not have to be swapped with your Jeep. Look for a 96-98 ZJ 242 same style for a direct swap.

Here is the input shaft (middle) All ZJ 242's have approx 3/4+" exposed input shaft. This would be the part that would have to be swapped but this should not apply to you.


Last edited by Virmagicus; 10-19-2009 at 11:01 AM..
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Unread 10-19-2009, 10:53 AM   #6
99avant
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Jeff, do all ZJ transmissions and tcases have the same spline count? Can he get a case from an I6 and have a direct bolt in to his v8?
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Unread 10-19-2009, 10:54 AM   #7
antwon412
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awesome. thanks for the pics. I went thru and re-read (for about the 8th time) the thread i posted in earlier about it. And I checked out the step by step tutorial.

I think I should be ok then. Ill start looking for a local 242 tcase.

thankss again for the help.
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Unread 10-19-2009, 11:00 AM   #8
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Quote:
Originally Posted by 99avant View Post
Jeff, do all ZJ transmissions and tcases have the same spline count?
Yes. 23 spline front, 27 rear.



Quote:
Originally Posted by 99avant View Post
Can he get a case from an I6 and have a direct bolt in to his v8?
Depends on the year, but yes.
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Unread 10-19-2009, 11:07 AM   #9
99avant
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Quote:
Originally Posted by Virmagicus View Post

Depends on the year, but yes.
Ok, good to know. Trying to help this guy, as well as gearing up for a buddy who is gonna need to replace his 249 soon.

Alls I know is wj's
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Unread 10-19-2009, 11:49 AM   #10
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I just read this on wiki about the 5.9


The Grand Cherokee 5.9 further included additional performance-enhancing features including:

* A stronger 46RE transmission than the 5.2 L with a heavier output shaft


Has anyone swapped a 231 or 242 into a 5.9? Is this wiki "fact" true? I hope this pertains to this thread, I don't want to be a hi-jacker
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Unread 10-19-2009, 12:34 PM   #11
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Quote:
Originally Posted by Jon05Rubicon View Post
* A stronger 46RE transmission than the 5.2 L with a heavier output shaft


Has anyone swapped a 231 or 242 into a 5.9? Is this wiki "fact" true? I hope this pertains to this thread, I don't want to be a hi-jacker
Many have done the swap with the 5.9. A heavier tranny output maybe? ...
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Unread 10-19-2009, 12:36 PM   #12
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Quote:
Originally Posted by Jon05Rubicon View Post
I just read this on wiki about the 5.9


The Grand Cherokee 5.9 further included additional performance-enhancing features including:

* A stronger 46RE transmission than the 5.2 L with a heavier output shaft


Has anyone swapped a 231 or 242 into a 5.9? Is this wiki "fact" true? I hope this pertains to this thread, I don't want to be a hi-jacker
it has a heavier driveshaft, the tranny output is still 23 spline(spline count is the only thing that could "make" it stronger).
the 46re is internally stronger than the 44re, it has to do with the clutch packs and planetary gear assemblies though.
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Unread 10-19-2009, 04:07 PM   #13
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So I found a guy local to me that has a 249 out of a 98 5.9l for only $100. Would it be worth it to pick it up and use it? Even if it only lasted me a few years it seems like its worth $100.

Is there any way to test it before hand to see if its in good working order before I install it?

Or would it be worthwhile to buy it and a new VC and install it then bolt it up? (Tho really, if I'm doing that I might as well just buyu the VC and use my current TC)

Opinions?
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Unread 10-19-2009, 04:20 PM   #14
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Quote:
Originally Posted by antwon412 View Post
So I found a guy local to me that has a 249 out of a 98 5.9l for only $100. Would it be worth it to pick it up and use it? Even if it only lasted me a few years it seems like its worth $100.

Is there any way to test it before hand to see if its in good working order before I install it?

Or would it be worthwhile to buy it and a new VC and install it then bolt it up? (Tho really, if I'm doing that I might as well just buyu the VC and use my current TC)

Opinions?

There is no way to test the VC prior to installing the TC. It would have to be installed. If you bought a new VC the price would be about 350 for a cheapy. With 350 you can buy two 242's or 231's. If you want to gamble and install the new 249 go for it. The VC is a wear part and could last another 500 miles,1,000 miles who knows.
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Unread 10-19-2009, 04:24 PM   #15
antwon412
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Ok. Im just having a harder time finding a 242 for some reason in that price range. I checked a couple parts websites that people on this board linked me to, and they cost substantially more. Unless Im looking for the wrong item. Things just seem to be more expensive here in the bay area.

Ill look again and see if i can get some shipping qoutes. I wouldnt think it would be TOO expensive.
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