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Unread 09-16-2010, 06:59 PM   #1
Steel02001
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2010 JK Wrangler 
 
Join Date: Aug 2010
Location: Renton, Washington
Posts: 64
Do I need a new Drive Shaft?

I've received different opinions so I thought I would put this out there in hopes of getting a few more opinions or even someone with issue.

I ordered a 3.4" Rock Krawler lift for my 2010 Unlimited. I have been told the front drive shaft will rub at 3" and I have heard you dont need to worry until you get over 4".

So, thoughts on whether or not I will need to purchase a heavy duty drive shaft?

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Unread 09-16-2010, 07:10 PM   #2
Crasher
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1997 ZJ 
 
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Posts: 606
Depending on how far your front shocks allow the axle to drop, you will have to notch the front skid plate. Also, if you have an auto, replace the metal clamp on the front of the boot of the front ds with a zip tie, I also trimmed the transmission pan lip for more clearance. With these couple of mods, you should be ok.
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Unread 09-17-2010, 07:54 AM   #3
gmorgan
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Join Date: May 2008
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I had to replace my rear shaft with a 4" lift the shaft fell apart now I have a TOMWOODS shaft and it's great
101_3443.jpg  
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Unread 09-17-2010, 11:00 AM   #4
DeepSky
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2007 JK Wrangler 
 
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It may rub but I wouldn't go out spending the money on an aftermarket shaft immediately. I've been running 4" of lift with the stock DS for 40,000 miles now. I tore the boot off of it around 20k miles and its been fine since. In retrospect had I known I probably would have done the couple of little mods Crasher talked about.
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Unread 09-17-2010, 11:17 AM   #5
ariesen
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what about with the AEV 4.5 lift? need new front shaft? and/or rear shaft?
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Unread 09-17-2010, 12:13 PM   #6
Crasher
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Join Date: Feb 2008
Location: WI & AZ
Posts: 606
I don't know if 4 1/2" would require a new front shaft or not. It would be getting close to it's limits with the suspension fully extended. another issue comes up with a double cardon shaft up front. If you adjust the arms for 5 degree or higher of castor, the pinion angle will be off enough to vibrate. Vibration feeding into the 241 tc is a bad thing. They have been known to explode from that. On the other hand, if you adjust for pinion angle, you might be near 3 degrees of castor and have a flighty ride. A few JKs, mine included, handles fine w/3 degrees, but many do not. When lifting to the point that you need a double cardon ds, you end up compromising between pinion angle and castor. That's the reason I went with a 3" lift. I will run the stock shafts until the give up and then replace them with another pair of stock shafts that you can pick up for $150.

Just my 2 cents worth.
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Unread 09-17-2010, 02:39 PM   #7
Steel02001
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2010 JK Wrangler 
 
Join Date: Aug 2010
Location: Renton, Washington
Posts: 64
Thanks for the help all, I will wait on buying a heavy duty shaft until I need too. And to think, I was starting to wonder if I should have gone with 2.5" of lift rather than 3.5". Phew
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drive shaft , JK Wrangler , lift angles , wrangler

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