drive shaft angle

[ballistikjeeper]

ok i figured my drive shaft angle its the reason ive been bustin u-joints right and left i know of this wedge kit that fixes the angle and extends the shaft, but i was also thinking of turning the axel itself a little.
so id figue id ask you gods of jeep hardware what you think, thanks -matt

 

[toyworx]

The goal is to have the included angle of the yoke to driveshaft be the same at the transfer case end as it is on the axle end. Actually, at static ride height while the Jeep is sitting still, the pinion on the axle should be a few degrees towards the pavement so that when you load the axle under power, the two angles match (axle and t-case ends).

So what you need to do is get some measurements off each end, figure out how far off the two are, and then shim the axle to the correct position. SOME TIMES, you need to shim the axle with a caster wedge AND drop the transfer case down, but not always.

OHHHH...i forgot. This is for a standard shaft.


FOR CV SHAFT:

The rear axle pinion should be directly in line with the driveshaft when under power. Meaning there should be 0 degrees of included angle at the axle end so that the CV is doing 99% of the angle change work, and the axle end is handling the rest as the axle comes on and off power.

 

[JeepinMaxx]

So with my diff at the angle in picture one

with a 'conventional' two joint driveshaft, I know I have vibrations, however is it OK to run this until next season when I can afford to switch to a SYE and CV shaft? I have 6 degree shims in the 4" lift - but I'm not sure I can handle dropping the springs again ( major pain in the a$$ installing the lift the 1st time!). Any recommendations?

 

[ballistikjeeper]

well ill be dammed. i have a 2in body lift allredy so how hard would it be to install the motor mounts. ill prolly take those then

 

[jon]

You cannot run a regular t joint triveshaft in a driveline. set up for a cv shaft. Trying not to get super technical the driveshaft does not acutally run at a constant speed, the input and output do though. having the same angular misalignment is what allows this to work. this is why you yokes also need to be in phase.

ballistik, I wouldn't reccomend trying to roate your axle, unless you have acess to a good welder, and are experienced with welding. ITs quite a bit of work.