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Will ZJ front coil springs fit an MJ?


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Yes. If the ZJ is a V8, they'll probably give you more lift than advertised. XJ Up Country (factory +1") springs are the same part number as ZJ V8 springs.

 

A bit off-topic, but the ZJ V8 sway front bars are the same as the XJ Country sway bars too.

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  • 9 years later...

Hello everyone,

 

I know this thread is old and I recently joined this forum. 

 

I acquired an 89 MJ Pioneer 4.0 2WD Auto about a month ago and pulled front coils from a 94 ZJ 5.2 V8 to level the truck, they seem tall, approx. 19.5", wondering if I need to change out the front shocks and or track bar with these coils.  will these lift it 2" ?   My rear is jacked up a little over 3" higher at the rear fender well..

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What does the 19.5" dimension refer to, the free length of the springs, or the measurement from your axle centerline to the wheel flare with the springs installed?

 

As I posted previously in this thread, ZJ V8 springs are the same springs used in the late-model Cherokee 4.0L with the Up Country suspension option, which rides 1" higher than the standard suspension. How do I know this? I own two 2000 XJs. The front springs in my '87 MJ are tired, so I wanted to buy new springs and I thought the Up Country springs would be a good choice. So I crawled under the first of the 2000 XJs when it was new, read the number off the tag on the spring, and called my dealership parts guru to order a pair. And his immediate response was, "Why are you ordering Grand Cherokee springs for a Comanche?"

 

So ... ZJ V8 springs should lift a 4.0L Comanche 1 inch higher than stock. You don't need to change the shocks or the sway bar links to use those springs.

 

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49 minutes ago, Eagle said:

So ... ZJ V8 springs should lift a 4.0L Comanche 1 inch higher than stock. You don't need to change the shocks or the sway bar links to use those springs.

 

OP pulled used springs from a 24+ year old ZJ. Who knows how they will settle out....

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9 hours ago, HOrnbrod said:

 

OP pulled used springs from a 24+ year old ZJ. Who knows how they will settle out....

 

Agreed. But the MOST they should produce is a 1" lift in an 4.0L MJ. His MJ is 29 years old, so he may be starting from a settled ride height, too.

 

They won't produce 2 inches in the best of circumstances. Add a pair of 1-inch (which I think are really 3/4-inch) lift spacers and he'll be in the ballpark. Of course, he could just use 2-inch spacers, but with the ZJ V8 coils he'll have a higher spring rate for a former ride, and should end up at about the same height.

 

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  • 10 months later...

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