Luvtohunt Posted October 28, 2008 Share Posted October 28, 2008 Have a chance to buy a set of ZJ 3" lift coil springs, just checking to see if they will fit my 88 MJ? Thank you. Link to comment Share on other sites More sharing options...
Eagle Posted October 28, 2008 Share Posted October 28, 2008 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. Link to comment Share on other sites More sharing options...
zjrog Posted October 28, 2008 Share Posted October 28, 2008 Its my understanding that ZJ springs tend to be about an inch taller than XJ/MJ springs. That said, Upcountry springs are an inch taller than stock ZJ springs. Link to comment Share on other sites More sharing options...
Lewt2007 Posted October 28, 2008 Share Posted October 28, 2008 mine has grand Cherokee lift springs and pucks in the front Link to comment Share on other sites More sharing options...
Motion Offroad Posted October 29, 2008 Share Posted October 29, 2008 ZJ lift springs typically have a different coil rate than XJ/MJ lift springs do. You will typically get 1" MORE lift out of a ZJ coil on the XJ/MJ than on a ZJ. So if you have a 3" ZJ coil, you'll most likely get 4" out of them on the XJ/MJ. Link to comment Share on other sites More sharing options...
HOrnbrod Posted October 29, 2008 Share Posted October 29, 2008 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. Link to comment Share on other sites More sharing options...
jtdesigns Posted October 29, 2008 Share Posted October 29, 2008 and just a tad bit off subject also,, when lowering using the rear springs of a ZJ on the front of a MJ don't use a V8 ZJs springs, but 6cyl.. right?? And what year ZJ for lowering the front?? Link to comment Share on other sites More sharing options...
Belto Posted November 4, 2008 Share Posted November 4, 2008 stock front ZJ v8 coils will lift an XJ/ MJ about 1.5" Link to comment Share on other sites More sharing options...
carnuck Posted November 10, 2008 Share Posted November 10, 2008 I put V8 springs in the front of my '86 4 cyl MJ and got nearly 3" of lift (rode like a buckboard off road too!) That's the one I have for sale right now BTW. Link to comment Share on other sites More sharing options...
dfreeman616 Posted November 11, 2008 Share Posted November 11, 2008 I put V8 springs in the front of my '86 4 cyl MJ and got nearly 3" of lift (rode like a buckboard off road too!) That's the one I have for sale right now BTW. that's cause you have a 4cyl engine, so less weight. but, luvtohunt didn't say what he's running... Link to comment Share on other sites More sharing options...
Comanche Guy Posted September 3, 2018 Share Posted September 3, 2018 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.. Link to comment Share on other sites More sharing options...
Eagle Posted September 3, 2018 Share Posted September 3, 2018 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. Link to comment Share on other sites More sharing options...
HOrnbrod Posted September 3, 2018 Share Posted September 3, 2018 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.... Link to comment Share on other sites More sharing options...
Eagle Posted September 3, 2018 Share Posted September 3, 2018 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. Link to comment Share on other sites More sharing options...
SandMountainJeep Posted August 3, 2019 Share Posted August 3, 2019 Are 5.9 springs the same as the ones on a 5.2 Grand Cherokee? Link to comment Share on other sites More sharing options...
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