drive shaft vibration ??
11-16-2011, 05:38 PM
#1
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drive shaft vibration ??
after a small 3.5 lift on my xj, drive shaft is vibrating,, ive tilt the axle and still have a problem (joints are new) do i really need to drop my t-casse ? thanks for helping.
11-16-2011, 06:27 PM
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Year: 1999
Model: Cherokee
Engine: 4.0
you want to match the angle thats at the axle to the angle thats at the tcase, u can buy the angle gauge for like $7 bucks at home depot, and if you cant make it work with that, than yes, dropping the tcase will more than likely help
11-16-2011, 08:49 PM
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Year: 1987 MJ, 1998 XJ, 1973 J2000, 89 waggy
Model: Comanche (MJ)
Engine: 4.0L H.O
you shouldn't need a t-case drop with only a 3.5" lift... check that your u-bolts on your axle are tight... (btw this should be in OE cherokee tech, not Fabrication)
11-16-2011, 09:31 PM
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& depending on his jeeps year. YES he will need one. If he has a 97+ he will need one. I have yet to meet someone with the new years over 3 who doesnt need one. Mines at 3.5 and I had HORRIBLE vibes. Installed a drop.. almost 0 vibes. (btw it vibed some stock...actually does it less now though haha)
I made mine for less than 10 bucks and took less than an hour total.
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11-16-2011, 09:35 PM
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11-16-2011, 09:43 PM
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Year: 1987 MJ, 1998 XJ, 1973 J2000, 89 waggy
Model: Comanche (MJ)
Engine: 4.0L H.O
Actually Its adv tech.
& depending on his jeeps year. YES he will need one. If he has a 97+ he will need one. I have yet to meet someone with the new years over 3 who doesnt need one. Mines at 3.5 and I had HORRIBLE vibes. Installed a drop.. almost 0 vibes. (btw it vibed some stock...actually does it less now though haha)
I made mine for less than 10 bucks and took less than an hour total.
& depending on his jeeps year. YES he will need one. If he has a 97+ he will need one. I have yet to meet someone with the new years over 3 who doesnt need one. Mines at 3.5 and I had HORRIBLE vibes. Installed a drop.. almost 0 vibes. (btw it vibed some stock...actually does it less now though haha)
I made mine for less than 10 bucks and took less than an hour total.
11-16-2011, 09:45 PM
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Year: 1991
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Engine: 4.0L
Is this a Rubicon Express 3.5" lift by chance? If so they are known to actually sit about 4.5" in the rear, which is definately enough to potentially cause some vibes. I just installed my so-called "3.5 inch" lift (bastard pack rear, but about the same height as the RE full packs) and had AWFUL vibes at every speed except 40-50 mph. Installed a t-case drop and it definately helped, although I still have vibes between 25-35 mph. Not all XJ's are the same when it comes to driveline vibes as there are different driveshafts used, different t-cases, etc. depending on the year and options of your particular Jeep.
Short answer to your original question- if you know the u-joints are good then yes, I would definately try a t-case drop. They are only about $20 and are very easy to install as long as you don't have a frozen stud (I was lucky, mine came right out and it took maybe 30 minutes to install the drop spacers).
Short answer to your original question- if you know the u-joints are good then yes, I would definately try a t-case drop. They are only about $20 and are very easy to install as long as you don't have a frozen stud (I was lucky, mine came right out and it took maybe 30 minutes to install the drop spacers).
11-16-2011, 09:55 PM
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Is this a Rubicon Express 3.5" lift by chance? If so they are known to actually sit about 4.5" in the rear, which is definately enough to potentially cause some vibes. I just installed my so-called "3.5 inch" lift (bastard pack rear, but about the same height as the RE full packs) and had AWFUL vibes at every speed except 40-50 mph. Installed a t-case drop and it definately helped, although I still have vibes between 25-35 mph. Not all XJ's are the same when it comes to driveline vibes as there are different driveshafts used, different t-cases, etc. depending on the year and options of your particular Jeep.
Short answer to your original question- if you know the u-joints are good then yes, I would definately try a t-case drop. They are only about $20 and are very easy to install as long as you don't have a frozen stud (I was lucky, mine came right out and it took maybe 30 minutes to install the drop spacers).
Short answer to your original question- if you know the u-joints are good then yes, I would definately try a t-case drop. They are only about $20 and are very easy to install as long as you don't have a frozen stud (I was lucky, mine came right out and it took maybe 30 minutes to install the drop spacers).
11-16-2011, 09:58 PM
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11-16-2011, 10:19 PM
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Year: 1992
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If you wanna see my homebrew tcase drop I'll show, it costed like literally 5 bucks or so.
I left the stud in place, used a cuppler on it, with a bolt.
Then since my Ace had only two of the copplers I needed I got ones that were way to big, cut them down to size, ran my bolt through them into the tcase. Its less jank than it sounds. Haha
I left the stud in place, used a cuppler on it, with a bolt.
Then since my Ace had only two of the copplers I needed I got ones that were way to big, cut them down to size, ran my bolt through them into the tcase. Its less jank than it sounds. Haha
