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Unread 09-05-2012, 11:42 AM   #1
singleytools
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1998 ZJ 
 
Join Date: Apr 2012
Location: Inkom, Idaho
Posts: 8
Driveline BLOWN

Bought a '98 ZJ with 112K highway miles. Swapped a 3" lift from my '93 to the '98. The first "relatively tame" 4 wheeling I did blew out the front driveling. I discovered the forward end is a CV style and the back is a U-joint style. "Fortunatly" I had difficulty getting someone to rebuild or replace it. I didn't like the idea of a used on. What I found out is the lift compromized the angles of the CV style front. Because of the delay, I found a rebuilder who is replacing the CV style with a U-joint style in the front. The told me that if will be new and much stronger, especially in 4 Wheeling conditions.

Any input from those aware of this condition? Jeep has discontinued this diveline...

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Unread 09-05-2012, 12:05 PM   #2
singleytools
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1998 ZJ 
 
Join Date: Apr 2012
Location: Inkom, Idaho
Posts: 8
Cost for repair

I found 6-States in Salt Lake City to rebuild my driveline for $250 and about $25 in shipping from about 2 hours here in Idaho. The wrecking yards wanted $180 for a used one that would put me back in the same place. They were great with their info. We shall see how it all turns out
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Unread 09-05-2012, 12:20 PM   #3
errorcode3
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1998 ZJ 
 
Join Date: Nov 2010
Location: Hutch, Minnesota
Posts: 493
searching a bit on this forum would have yielded some great info.
Some say a simple 2" BB can destroy the CV front driveshaft, most lift kits actually recommend swapping the CV style for a normal u-joint.
but again, this is pretty typical for the CV style.
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Unread 09-05-2012, 12:42 PM   #4
gabrod72
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1993 ZJ 
 
Join Date: Jan 2007
Location: Austin, TX
Posts: 1,395
CV style driveshaft blowing up is all part of lifting a ZJ, and they grenade even faster if you take it on the trails. You can find a used one pretty cheap at a u-pull it, so I'm sure if you drive you can locate something to patch it up for now relatively cheap. That stated, you need to start looking for a front yoke and a U-joint front driveshaft if you're going to keep wheeling.

If you're paying your builder make sure they're including and installing the yoke too. Unfortunately, the yoke for the CV and yoke for the U-joints are different, so you absolutely need to change the one on your front axle. There's lots of write-ups on this and it's a relatively simple procedure to DIY. As for having it re-built, for that price I'd spend the extra $25 and just get a Tom Woods shaft.... then install the yoke and DS myself. You will need to find the yoke first to see what the final length will be for your driveshaft though.
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Unread 09-05-2012, 12:54 PM   #5
PolkaPower
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1998 ZJ 
 
Join Date: Aug 2011
Location: The Abyss, MD
Posts: 16,041
I blew mine out with a 2" BB. Went to a junkyard and pulled a front U joint double cardon DS from another ZJ and had a shop put a new yoke in. 100 bucks plus 15 for the ds.
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