Jeep mj rear axle

[Davidsamplesmjjr]

Hey, guys has anyone changed there rear axle from leaf to coils or know where i can buy one rear axle coil dana 35 ??

[MiNi Beast]

Going coils be full custom job. Not a bolt in upgrade by no means. It can be done for sure but for what reasoning be the question. 😕 and for sure not a d35. 

[omega_rugal]

take the d35 out of a ZJ...  and waste time welding it to the MJ...

[derf]

I wouldn't take a ZJ (or WJ?) rear axle.  It's a 5 on 5.5 bolt pattern so you have to deal with different rims front and rear.  Well, unless you grab the front axle and swap it as well.

 

If you're dead set on using a Dana 35, find a TJ (96-06 Wrangler).  It at least has the same bolt pattern as the MJ.  You'll have to build custom frame side mounts for the control arms to match the TJ donor.  And weld up the coil spring bucket on the frame.  But then you've done a lot of work to mount up a pretty weak axle.

 

If you're not dead set on a Dana 35, there are so many better options out there to choose from.  Fabrication effort is probably similar but you can have a better axle than a Dana 35 and that's never a bad thing.

[omega_rugal]

1 hour ago, derf said:

I wouldn't take a ZJ (or WJ?) rear axle.  It's a 5 on 5.5 bolt pattern

 

ZJ has the same pattern as the MJ

[derf]

19 minutes ago, omega_rugal said:

 

ZJ has the same pattern as the MJ

I could have sworn it was different but you're right.

 

So yeah, lump the ZJ in with the TJ.

[ghetdjc320]

Whatever axle you decide to use, there is not a bolt in swap. The most time consuming part of the swap is the link brackets geometry and fabrication. There are one or two crossmembers for link mounting that are commercially available for the MJ that would work. A truss on whatever axle you use will give you a platform for upper links and you’ll have to just weld on some lower link brackets. You’ll want to go with a triangulated setup to locate the axle without the use of a track bar. You could then mount coils, coil overs or air shocks with the appropriate upper and lower mounts. To do it right figure a couple grand in parts minimum and a good welder with all the rest of your typical metal working tools. And a good dose of skill and patience to top it off. Ultimately though the gain may not be worth it for you. What are you hoping to achieve with your MJ by adding a coil system for the rear?