89 Comanche 4X converision More questions

[AZ highdesert]

I have never done a 4X4 converison before so I need help. :oops:

 

From what I have read on the forum it sounds almost like a bolt in project.

 

The project vehicle is a 89 Eliminator, 120,000, 4.0, Auto, PS, AC, 2wd. As it is a AZ vehicle no rust :D only damage is the rear quarter panel by the tailight and the rear bumper.

 

I have search the forum and I still have a few questions:

 

When replacing the rear axle with the axle from an XJ can I use the existing XJ spring perches?

 

I will be using a TC including the driveshafts. from another XJ Auto 4.0

Do I use the XJ rear driveshaft or shorten the MJ rear driveshaft?

 

I know I need to use the Comanche rear springs.

 

The complete XJ front drive train will be used, A 3 inch lift kit will be install during repalcement.

 

Any other tidbits would be appericated.

 

 

I just read that you cannot use a 2wd tranny and attached the T case to it.

 

The local used parts yard has told me in the past that I can make the connection between the 2WD Tranny and the T Case.???????

[JeepcoMJ]

I have never done a 4X4 converison before so I need help. :oops:

 

From what I have read on the forum it sounds almost like a bolt in project.

 

The project vehicle is a 89 Eliminator, 120,000, 4.0, Auto, PS, AC, 2wd. As it is a AZ vehicle no rust :D only damage is the rear quarter panel by the tailight and the rear bumper.

 

I have search the forum and I still have a few questions:

 

When replacing the rear axle with the axle from an XJ can I use the existing XJ spring perches?

 

I will be using a TC including the driveshafts. from another XJ Auto 4.0

Do I use the XJ rear driveshaft or shorten the MJ rear driveshaft?

 

I know I need to use the Comanche rear springs.

 

The complete XJ front drive train will be used, A 3 inch lift kit will be install during repalcement.

 

Any other tidbits would be appericated.

 

why are you changing the rear? gears I assume. you probably won't get the perches off in one piece, but if you can, go ahead and reuse them. when you put the axle in the manche, you also should realize that the perches will not be in the same opposite spot as the xj perches; an mj rear springs are wider.

 

you'll want to have the mj shaft shortened, it's cheaper than to have the xj shaft retubed (lengthened).

 

you will need your carpet and seats out to do this as well, you have to put the pivot point for your 4x4 shifter assembly in which requires 4 bolts.

 

in a couple weeks, geonovast and I are swapping his 4wd tranny in and doing all of this (though with a 5 speed 4wd 4 cylinder) except he's already finished the axle swap.

[offroader461]

where ya located...i can lend a helping hand if ya need one :cheers:

[AZ highdesert]

where ya located...i can lend a helping hand if ya need one

 

Whetstone/Huchuca/ Sierra Vista Area

 

Sounds Like changing gears to match the front and keeping the comanche rear end would be the way to go!!!

[Eagle]

You can't use the XJ spring perches -- the spacing isn't right for the MJ. But ... if you're doing a 3" lift in the front, you don't want to go spring-over in the rear anyway. That's going to net you a MINIMUM of 5" in the rear. You'll be better off staying with the MJ rear axle and doing a combination of full-length AAL and maybe a small shackle lift.