Tcase 98 zj
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Newbie
Joined: Dec 2018
Posts: 6
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From: West,Texas
Year: 1998
Model: Grand Cherokee (ZJ)
Engine: 5.9
Tcase 98 zj
So I have. 98 limited 5.9 with a np249 and after lifting it I have driveline vibration I'm looking at a couple np242 or np231 do they have to come out of a jeep I've found a couple in half ton dodge pick ups and a couple durangos would either of those work
Senior Member
Joined: Dec 2017
Posts: 622
Likes: 9
From: Calgary, AB
Year: 1998
Model: Grand Cherokee (ZJ)
Engine: 5.2
Your issues are not transfer case related. You can't lift a Jeep and not need things like a tcase drop or sye... depending on lift size.
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Newbie
Joined: Dec 2018
Posts: 6
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From: West,Texas
Year: 1998
Model: Grand Cherokee (ZJ)
Engine: 5.9
I got a np242 out of a 95 grand Cherokee today. Going to pull my np249 in the morning and guessing I'll have to break them down and swap input shafts from what all I've read
CF Veteran
Joined: May 2008
Posts: 5,188
Likes: 6
From: Bristol,Pa
Year: 94
Model: Cherokee
Engine: 4.0L
You wont need to swap input gear, since the donor came from a ZJ. It's 23 spline, .840" input length. To do the 242 swap correctly.. use the shifter gate, linkage and bezel.
Thread Starter
Newbie
Joined: Dec 2018
Posts: 6
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From: West,Texas
Year: 1998
Model: Grand Cherokee (ZJ)
Engine: 5.9
Thread Starter
Newbie
Joined: Dec 2018
Posts: 6
Likes: 0
From: West,Texas
Year: 1998
Model: Grand Cherokee (ZJ)
Engine: 5.9
Well everything was going smooth till I went to put np242 would go omen easy then stop about 1/2" from the transmission housing tuns out my old tcase had splines all the way on input shaft the new one has about 1/2" at the very back where the splines stop so I'll be breaking them both down tomorrow ands swapping input ahafts
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CF Veteran
Joined: May 2008
Posts: 5,188
Likes: 6
From: Bristol,Pa
Year: 94
Model: Cherokee
Engine: 4.0L
Well everything was going smooth till I went to put np242 would go omen easy then stop about 1/2" from the transmission housing tuns out my old tcase had splines all the way on input shaft the new one has about 1/2" at the very back where the splines stop so I'll be breaking them both down tomorrow ands swapping input ahafts
Here's the info from JeepForum from the very large transfer swap thread..
93-95 V8 ZJ's: 46RH transmission, 1.55" 23 spline input shaft
93-95 I6 ZJ's with the 42RE: .840" 23 spline input (with collar)
93 I6 ZJ's with the AW4 or AX15: .750" 23 spline input
All 96-98 ZJ's: .840" 23 spline input
All 96-01 XJ's: .840" 23 spline input
92-95 XJ's: .750" 23 spline input
91 and older XJ's: .750" 21 spline input
Check this thread.. https://www.jeepforum.com/forum/f13/...-np242-685644/ See if theres something i'm missing. I now see the {with collar} on early ZJ 242's. Keep in mind, you need to match gear cut's when swapping an input into a different case.
Good luck..
Senior Member
Joined: Dec 2017
Posts: 622
Likes: 9
From: Calgary, AB
Year: 1998
Model: Grand Cherokee (ZJ)
Engine: 5.2
Well everything was going smooth till I went to put np242 would go omen easy then stop about 1/2" from the transmission housing tuns out my old tcase had splines all the way on input shaft the new one has about 1/2" at the very back where the splines stop so I'll be breaking them both down tomorrow ands swapping input ahafts
Figure out what is going on. Look at the tag on the tcase and check the date code.
Senior Member
Joined: Dec 2017
Posts: 622
Likes: 9
From: Calgary, AB
Year: 1998
Model: Grand Cherokee (ZJ)
Engine: 5.2
Thread Starter
Newbie
Joined: Dec 2018
Posts: 6
Likes: 0
From: West,Texas
Year: 1998
Model: Grand Cherokee (ZJ)
Engine: 5.9
Yeah them both broke down shafts swapped ready to reassemble them np242 has the bigger lip and bearing so getting new bearings
In the morning and hopefully illl be back rolling tomorrow
In the morning and hopefully illl be back rolling tomorrow
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