Diff angle

[Sp88mj]

I am swaping a xj d35 on my comanche and so i have the opportunity to give some angle on my axle when its time to weld the perches. 
i’ll run 3inch lift, is it worth it to give some angle or should i stay with the stock specs? 
thanks!

[derf]

If you're dead set on cutting and welding the perches, wait until you have it basically complete and sitting at ride height with the driveshaft installed. Then you can see what the angle needs to be and weld from there.

 

Or you can leave the perches.  If you see that the angle is off you can just install some degree shims.  They go between the spring perch and springs, on both sides.

[Sp88mj]

7 minutes ago, derf said:

If you're dead set on cutting and welding the perches, wait until you have it basically complete and sitting at ride height with the driveshaft installed. Then you can see what the angle needs to be and weld from there.

 

Or you can leave the perches.  If you see that the angle is off you can just install some degree shims.  They go between the spring perch and springs, on both sides.

the problem is that i am restoring the manche, i have no mecanic at all in there and it will be easier for me to paint the diff/frame and floor in one shot rather than put everything back together then paint one last axle! 

[watchamakalit]

Arent the xj spring mounts narrow in comparison to the mj location?

[GonzoTheGreat]

If you run the the stock slip yoke on the driveshaft, the pinion angle should be parallel to the output shaft of the t-case.

 

If you install a slip yoke eliminator, and run a double cardan joint that's when you should angle the pinion directly toward the t-case.

[Sp88mj]

15 minutes ago, watchamakalit said:

Arent the xj spring mounts narrow in comparison to the mj location?

Yes, but xj’s are soa and i will run sua, so i cut the xj perches to weld new one 

[Sp88mj]

3 minutes ago, GonzoTheGreat said:

If you run the the stock slip yoke on the driveshaft, the pinion angle should be parallel to the output shaft of the t-case.

 

If you install a slip yoke eliminator, and run a double cardan joint that's when you should angle the pinion directly toward the t-case.

Ill run stock slip yoke! So ill setup the axle like the oem one! Thanks 

[derf]

1 hour ago, Sp88mj said:

the problem is that i am restoring the manche, i have no mecanic at all in there and it will be easier for me to paint the diff/frame and floor in one shot rather than put everything back together then paint one last axle! 

So paint it and put it together as is.  If the angle is off when you get to final assembly, toss some degree shims in to change the angle.