Going to a 2" IRO lift for 1st time. Do I need to worry about the front drive shaft? - JeepForum.com
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Unread 02-07-2014, 10:48 AM   #1
brewcity1
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Going to a 2" IRO lift for 1st time. Do I need to worry about the front drive shaft?

Hey guys...1st time lifter, and have searched and searched the threads for all sorts of great advice. Thank you all!
I will be going with the 2" IRO lift with Bilsteins and all new isolators.
With that being said...I did come across a few posts regarding the front drive shaft failing after a lift. Is this common, or just a freak thing?
I have an '04 Limited (build sheet says I have a DJJS Dana 30/186MM Front Axle...not sure about my front drive shaft)...so if I go up to 2" of lift (maybe a tad more with new isolators)...do I have to worry about anything like this happening? If so...what else do I need to make sure the front drive shaft wont fail?
This Jeep will only be seeing some mild wheeling. Mostly a DD.
Thanks so much for the help and advice.

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Unread 02-07-2014, 10:50 AM   #2
ChrisHager
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You shouldn't have to worry about it. The rezeppa joint fails after a while because of steep angles but at 2", the angle isn't too bad. I'd lift it and run the driveshaft as it is. If it fails, replace it with a double cardan driveshaft (third down in the picture).

Here is a chart to assist you in figuring out what driveshaft you have.

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But ChrisHager makes me want to poor water on a burning bucket of gasoline now just out of curiosity.
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Originally Posted by billzcat1 View Post
The latest lift kit from Rough Country? :D
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Originally Posted by Jeeples View Post
Your symptoms sounds just like what it does when it's not doing what it should because of how it is.
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Unread 02-07-2014, 11:00 AM   #3
brewcity1
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Quote:
Originally Posted by ChrisHager View Post
You shouldn't have to worry about it. The rezeppa joint fails after a while because of steep angles but at 2", the angle isn't too bad. I'd lift it and run the driveshaft as it is. If it fails, replace it with a double cardan driveshaft (third down in the picture).

Here is a chart to assist you in figuring out what driveshaft you have.

Cool...thanks for the help, and the pic! I really appreciate it. I was a tad worried...I have never lifted any of my Jeeps, and just wanted all the info before I go ahead with this, so I know what to expect.
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Unread 02-07-2014, 11:53 AM   #4
EmersonHart13
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Mine made noise immediately after my lift. I'd be ready for a failure. Of course mine has 165k on it so it might have been worn out anyway.
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Unread 02-07-2014, 12:36 PM   #5
brewcity1
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Originally Posted by EmersonHart13 View Post
Mine made noise immediately after my lift. I'd be ready for a failure. Of course mine has 165k on it so it might have been worn out anyway.
This is what I have read about. After the lift...noise, and then failure.
How hard is it to remove and replace with a double cardan?
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Unread 02-07-2014, 01:08 PM   #6
ChrisHager
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Here are a few little snippets I found (and trimmed up). I don't know much about the swap but I know there is quite a bit of knowledge here on the forum.

Quote:
Originally Posted by billzcat1 View Post
You need to replace both the transfer case yoke and axle yoke when you upgrade from your Rzeppa-jointed driveshaft to a U-jointed driveshaft. Carolina Driveline reportedly has a driveshaft that converts from CV joints to U joints by having flanged ends on the shaft. This is nice because then you don't have to buy yokes and change them (which is kind of a big deal on the front diff)...

...Now there are always cheaper ways to do things...

If you have the CV driveshaft (and you probably do with a 2000) it will fail at 4" lift. You can go cheaper by getting a used OEM double-cardan shaft for say $100 but you still need yokes.
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Originally Posted by wyattwj123 View Post
Well why do I need the yoke...
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Originally Posted by compcrasher86 View Post
Yoke because you're getting a new driveshaft with u-joints that wont mesh with the old rzeppa end on the transfer case.
__________________
His: 2004 WJ - OME HD 'Kolak' Lift - Build Thread
His: 1979 J-10 - 3" on 33s - Build Thread
Hers: 2000 TJ

ChrisHager's 'Grilled' Thread

WJ Torque Specs

Quote:
Originally Posted by tommyooooooh View Post
But ChrisHager makes me want to poor water on a burning bucket of gasoline now just out of curiosity.
Quote:
Originally Posted by billzcat1 View Post
The latest lift kit from Rough Country? :D
Quote:
Originally Posted by Jeeples View Post
Your symptoms sounds just like what it does when it's not doing what it should because of how it is.
ChrisHager is offline   Reply With Quote




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