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Unread 06-24-2007, 05:14 PM   #1
Astrodokk
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ZJ vs WJ transfer case

I went looking for a WJ for my son and was told by the salesperson that the WJ TC that is 4WD all time is the same as the 249 in the ZJ. I know the ZJ tc's had vc probs and I'm surprised that they would use the same one in the WJ's. Is that true, or is the all time 4WD (Quadradrive I think) different than the 249TC on the ZJ's?

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Unread 06-24-2007, 05:18 PM   #2
MuddyLuxury
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Quote:
Originally Posted by Astrodokk
I went looking for a WJ for my son and was told by the salesperson that the WJ TC that is 4WD all time is the same as the 249 in the ZJ. I know the ZJ tc's had vc probs and I'm surprised that they would use the same one in the WJ's. Is that true, or is the all time 4WD (Quadradrive I think) different than the 249TC on the ZJ's?
Diffrent TC the WJ uses a 247... mine had 120ish on the clock when i pulled it for a 242 with no issues, but yes the VC may eventually wear out.. just outa curriosity... how old is your kid? and why are you getting him a V8?
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Unread 06-24-2007, 05:35 PM   #3
Sporer65
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Like said above, the WJ uses the 247. That transfer case uses a Progressive Coupler instead of a Viscous Coupler and should not burn out.
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Unread 06-24-2007, 05:43 PM   #4
10achik
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Yep PC > VC
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Unread 06-25-2007, 06:43 AM   #5
greco gixxer
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I'm pretty sure that my 247 with the PC is cooked (as diagnosed by a local shop). I have a 242 on the way to replace it.

Quote:
Originally Posted by Sporer65
Like said above, the WJ uses the 247. That transfer case uses a Progressive Coupler instead of a Viscous Coupler and should not burn out.
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Unread 06-25-2007, 06:44 AM   #6
greco gixxer
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I'm pretty sure that my 247 with the PC is cooked (as diagnosed by a local shop). Binding at full lock turn, and a clunking coming at 50-60 mph!? I have a 242 on the way to replace it.

Quote:
Originally Posted by Sporer65
Like said above, the WJ uses the 247. That transfer case uses a Progressive Coupler instead of a Viscous Coupler and should not burn out.
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Unread 06-25-2007, 07:06 AM   #7
mendelmax
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With ZJ the coupler will wear out whatever you'll do. It's just a part that wears out, like tires for example. In WJ with proper maintenance, the PC will least for the whole vehicle life. But it demands proper maintenance. Drive a bit with low or improper oil, forget to change it at proper time etc, and you'll have to prepare your wallet.
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Unread 06-25-2007, 07:07 AM   #8
UUJ1
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The WJ's utilize 3 different T.C.'s. The 242 = Viscious Coupler(Select-Trac), The 247(Quadratrac-II)= Progressive Coupler, and The 249(Quadratrac)= Viscious Coupler.

Oh and... the Progressive Couplers DO burn out on the 247's, mine did and I had to replace it.
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Unread 06-25-2007, 07:11 AM   #9
ArloGuthroJeep
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JEEP! what are you talking about? The 249 was never used in the WJ.

The WJ only uses the 242 and 247 TC's and if you're really special, the 147 (1-speed AWD TC - no 4-low).
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Unread 06-25-2007, 07:15 AM   #10
UUJ1
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Quote:
Originally Posted by ArloGuthroJeep
JEEP! what are you talking about? The 249 was never used in the WJ.

The WJ only uses the 242 and 247 TC's and if you're really special, the 147 (1-speed AWD TC - no 4-low).
My bad... I thought I had heard once that it was used. Oh well, two outta three ain't bad. Thanks for the correction. So if the Selec-Trac is the 242, and the 247 is the Quadra-TracII, what T.C. do they use for the Quadra-Trac?
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Unread 06-25-2007, 07:22 AM   #11
ajmorell
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Quote:
Originally Posted by JEEP!
My bad... I thought I had heard once that it was used. Oh well, two outta three ain't bad. Thanks for the correction. So if the Selec-Trac is the 242, and the 247 is the Quadra-TracII, what T.C. do they use for the Quadra-Trac?
Quadra Trac and Quadra-Drive use the same t-case (247), Quadra-drive just has LS diffs front and rear, whereas QT doesn't
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Unread 06-25-2007, 07:25 AM   #12
UUJ1
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Quote:
Originally Posted by ajmorell
Quadra Trac and Quadra-Drive use the same t-case (247), Quadra-drive just has LS diffs front and rear, whereas QT doesn't
God... I knew that too!


.........and it's Monday!
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[B]
3" IRO/Addco rear sway bar/ 31x10.5 Pro Comp XMT's(Yes, I changed my mind and decided on these)/ Pro Comp Mountain Crawler soft 8's 15x7 w/3.75" BS[/B]

242 in my garage... still
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Unread 06-25-2007, 07:59 AM   #13
mendelmax
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And, 242 doesn't have any automatic coupling, nor viscous, nor progressive. Simple, mechanical locking device.

If the PC was burned in your WJ it had to be badly maintained or got some serious failure or worked in very hard conditions. By design it should easily outlive the tranny
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Unread 06-25-2007, 08:08 AM   #14
greco gixxer
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Unfortunately I just purchased my vehicle and from the interior and exterior it looks spectacular, I would have hoped the maintenance reflected that as well. Oh well.. I kinda like the fact of have a select-trac setup and the 2wd should yield a few more mpg..


Quote:
Originally Posted by mendelmax
And, 242 doesn't have any automatic coupling, nor viscous, nor progressive. Simple, mechanical locking device.

If the PC was burned in your WJ it had to be badly maintained or got some serious failure or worked in very hard conditions. By design it should easily outlive the tranny
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Unread 06-25-2007, 08:12 AM   #15
EMTimZJ
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2wd will not yield any significant gains in MPG. True story.
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