• Welcome to the new NAXJA Forum! If your password does not work, please use "Forgot your password?" link on the log-in page. Please feel free to reach out to [email protected] if we can provide any assistance.

breaking U-Joints

T

trump08

NAXJA Forum User
Location
Phonenix, AZ
hey guys im having a problem with snapping my u-joints. I have a 99' XJ sport with a 4" Tuff Country lift on 33", but i have front coil spacers and extended rear shackles so i sit closer to 5.5" of lift. everything else is stock but im having problems with my rear drive shaft. I will be driving and my rear drive shaft will literally fall out because of broken U-joints. This has happened twice to me now. Im wondering if its because my rear pinion angle is wrong or because the u-joints are just crappy quality. Post up if you have any ideas or need any more info on the rig. thanks
 
transfer case drop at all? the angle of the shaft is probably killing the u-joints. time to upgrade to a SYE and new shaft
 
Do you have blocks in the rear?
 
ok thats what i kinda figured. yea i have a t-case drop but its not a whole lot..its what came with the lift. so do you think i would be ok with just a sye and new shaft or will i need adjustable upper and lower CAs?
 
adjustable CA's?!?!? that has nothin to do with the rear. SYE and new shaft with a properly shimmed rear axle should solve all your problems
 
hey sorry i put CAs in there. I have a TJ and im just posting up for my buddy. Im not used to leaf springs : D And ill try to get some pics so you guys can check it out
 
trump08 said:
hey guys my buddy is having a problem with snapping his u-joints. He has have a 99' XJ sport with a 4" Tuff Country lift on 33", but he has front coil spacers and extended rear shackles so he sit closer to 5.5" of lift. everything else is stock but he is having problems with his rear drive shaft. He will be driving and his rear drive shaft will literally fall out because of broken U-joints. This has happened twice to him now. Im wondering if its because his rear pinion angle is wrong or because the u-joints are just crappy quality. Post up if you have any ideas or need any more info on the rig. thanks
Click to expand...
fixeded
 
A common problem is axle wrap causing ujoint binding. This is caused either from using lift blocks or having shot leaf springs.
 
make sure the little tabs that hold the u joint centered are not broken off.
 
A few things can cause it.
It all starts with a bad drive line angle.
Then when a u-joint goes it spreads the yoke.
That same busted u-joint will strech the straps.
So unless youve replaced the yoke and used new straps then one of those is probably the cause.
 
93XJLI said:
5.5" lift and stock rear shaft?

get SYE now

/thread.
Click to expand...

Exactly. I wouldn't even worry about anything else before you get this. With a 5.5" lift, you'll need 4 or 6 degree axle shims as well. Once that is all done, all the problems should be fixed.

I went with the Advance Adapters SYE with the HD 32 spline tailshaft, and eventually bought a Tom Woods driveshaft (10x more beefy than a stock front XJ shaft). Shim the axle and you are good to go.
 
You must log in or register to reply here.

Similar threads

V
For Sale 98 XJ for Parts in Central CT (Whole vehicle / No part outs)
Replies
0
Views
24
valli.bob
V
N
Leaf Spring Options
Replies
2
Views
118
nrparrott
N
O
SYE vs Fixed Yoke spline geometry
Replies
7
Views
3K
RCP Phx
R
S
94 XJ - Centering yoke replacement questions
Replies
3
Views
1K
Unclewolverine
U
M
NP 231 input shaft
Replies
3
Views
2K
RCP Phx
R
Back
Top