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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post #1 of 6 Old 02-07-2014, 10:48 AM Thread Starter
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.


2004 Grand Cherokee Limited 4.7L
General Grabber AT2's 255/65/17
1" Addco rear sway bar
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post #2 of 6 Old 02-07-2014, 10:50 AM
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.


~Chris
His: 2004 WJ - OME HD 'Kolak' Lift - Build Thread
His: 1979 J-10 - 3" on 33s - Build Thread
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post #3 of 6 Old 02-07-2014, 11:00 AM Thread Starter
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.

2004 Grand Cherokee Limited 4.7L
General Grabber AT2's 255/65/17
1" Addco rear sway bar
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post #4 of 6 Old 02-07-2014, 11:53 AM
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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post #5 of 6 Old 02-07-2014, 12:36 PM Thread Starter
brewcity1
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Quote:
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?

2004 Grand Cherokee Limited 4.7L
General Grabber AT2's 255/65/17
1" Addco rear sway bar
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post #6 of 6 Old 02-07-2014, 01:08 PM
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.
Quote:
Originally Posted by wyattwj123 View Post
Well why do I need the yoke...
Quote:
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.

~Chris
His: 2004 WJ - OME HD 'Kolak' Lift - Build Thread
His: 1979 J-10 - 3" on 33s - Build Thread
His: 2009 Expedition
His: 1978 F250 Custom - Build Thread
Hers: 2000 TJ
Hers: 2010 Jetta

ChrisHager's 'Grilled' Thread

Quote:
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"You can't recycle tartar sauce."
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