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Old 02-26-2008, 10:15 PM
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Another drive line vibe question...

If you get vibes after doing lets say a 4" lift is that bad? Or is it just that it annoys everyone so much that they decide to get a sye? Will it hurt anything by not getting a sye?
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Old 02-26-2008, 10:16 PM   #2
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Did you install a transfer case drop with the lift?

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Old 02-26-2008, 10:21 PM
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No, I have not done a lift yet. I am planning on doing one in the very near future. I just want to know before whether or not if I will HAVE to do sye. I'm planning on doing between a 4" and a 5.5" sca lift. I don't want to do a t-case drop if I don't have to.
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Old 02-26-2008, 11:14 PM   #4
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When i installed my 4" lift i did a circle around the parking with out the tcase drop. Yeah very bad vibes even at 10 mph. Now with the tcase drop, i get minor vibes at 50 mph only under hard acceleration.
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Old 02-27-2008, 12:13 AM   #5
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can anyone describe these "vibes"
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Old 02-27-2008, 12:25 AM   #6
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shaking.. ever play play station or other game consoles that have the vibrating controls? It feels sort of like that however its not as fast. Its somewhat slow rate vibration.

Cellphone uses the same methods but that is just too fast. These vibes are similar but they vibrate slower. Again the game controller during easy "shocks" is my best description.

I gues here is another one.. imagine you have bent axles or bad tires or something of that sort where it keeps on "kicking" the seat softly but only during acceleration.. thats it.

Again my vibes are very minor at 50mph during hard acceleration.
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Old 02-27-2008, 01:00 AM   #7
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yeah i dont think im suffering from those "vibes" you have described.

i only get a vibe when im first starting off from a dead stop.

sorry to side track your thread!

back to nicosauve's question!!
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Old 02-27-2008, 01:10 AM
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Yea back to my question lol. So does anybody know if these vibes are bad? I'm guessing that it might be hard on the u-joints but I'm not sure. Could it possibly be bad for the t-case?
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Old 02-27-2008, 03:19 AM   #9
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spanky is your jep lifted, I had that problem also in beginning I thought it was normal but the SYE fixed it. However I adjusted my front caster a bit more I got the front to do it slightly.. It almost feels like cupped tired but its not.
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Old 02-27-2008, 07:54 AM   #10
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Quote:
Originally Posted by nicosuave View Post
If you get vibes after doing lets say a 4" lift is that bad? Or is it just that it annoys everyone so much that they decide to get a sye? Will it hurt anything by not getting a sye?
Vibrations will shorten the life of the u-joints in the driveshaft. By how much depends on lots of stuff - how bad the vibrations are, the age of the u-joints, tire size, etc. It could be a very minimal lifespan change for the u-joints, or they could fail within a few thousand miles (and if it happens on the freeway, it's quite the experience!)
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Old 02-27-2008, 09:20 AM
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Yea thats what I thought. But what about the t-case? Does it cause extra stress on that too?
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Old 02-27-2008, 09:34 AM   #12
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Yea thats what I thought. But what about the t-case? Does it cause extra stress on that too?
I am sure that it does cause faster wear on the output shaft of the t-case as well, but I have never heard of one failing because of it. Plus, you will be replacing the output when you do a SYE conversion.
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Old 02-27-2008, 09:46 AM
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Ok thanks jeeperman

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