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Old 08-08-2012, 09:17 PM   #1
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V8 Cherokee coil springs

So if I was considering "leveling" a TJ cost effectively could this be accomplished with using coil springs from a V8 Cherokee? I would think I would need longer shocks in the front as well? Would this interfere or cause any "gremlins" to move in? My front is sagging a little more on my 97 than my niece's 2006. Both are 4.0's she has 31.10.50's and stock suspension. I am running 235/75/15's also stock and the rake is really noticable.

If this is a dup I am sorry, I have read and researched this till I have a headache I just don't want to take a great running Jeep (handles well also) and end up with the shakes, bakes, and dreaded death wobble.

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Old 08-08-2012, 09:25 PM   #2
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You'll probably need to add 2" to the back with ZJ springs. I ran ZJ springs up front and a 2" BB in the rear for a while and liked the handling. I used my old skyjacker shocks with the combo so I don't know how stock ones will work. The ZJ springs gave me an additional 1" of lift in the front over the 2" BB it replaced.

All these pics also include a 1.25" body lift and 33" tires

Before with 2" BB


After with ZJ springs



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Old 08-08-2012, 09:28 PM   #3
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yup, it's a fine idea. staying at approx. stock height, the shocks won't need changed unless they're worn out. there are a couple different "types" to try...XJ/ZJ I-6 front springs and V8 ZJ front springs. There are also "Up-Country" versions of these springs, which should provide a little more lift. To level a stock TJ, I'd say go to the junkyard, pull some "Up-Country" XJ and V8 ZJ front springs...shouldn't cost more than $30 or so. Try the XJ springs first, and if you don't like them, try the V8 ZJ springs next.
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Old 08-08-2012, 09:46 PM   #4
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So you are just replacing the front springs and how much lift in the front. I am stock right now just wount to leavel it out thanks.
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Old 08-08-2012, 09:49 PM   #5
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Also do the xj springs give alittle less, sorry haven't heard much of this.
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Old 08-08-2012, 09:52 PM   #6
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Originally Posted by kdb97tj View Post
Also do the xj springs give alittle less, sorry haven't heard much of this.
the engine on the XJ and the ZJ is mounted further forward, so there is more weight over the front axle than on a TJ. as such, the springs are different...i.e. longer and/or heavier rate. these vehicles also used the same front axle and the springs essentially share the same geometry (at least as far as we're concerned for this discussion). if you install them in place of stock TJ springs, they will lift the front end a little...especially if you've got old and worn springs. how much? well that depends on the condition of the springs you get, whether they're up-country or not, and how much weight you have on your jeep (bumpers, winch, etc).
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Old 08-08-2012, 09:57 PM   #7
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Thankyou thats what I was thinking.
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Old 08-08-2012, 10:01 PM   #8
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So would I be better off replacing all 4 springs with ZJ springs or are the rears the same?
I was thinking this might be a cheap and cost effective was to safely "lift" a TJ for 31 10.50's without any rubbing and "Death Wobble Issues"
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Old 08-08-2012, 10:06 PM   #9
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Quote:
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So would I be better off replacing all 4 springs with ZJ springs or are the rears the same?
I was thinking this might be a cheap and cost effective was to safely "lift" a TJ for 31 10.50's without any rubbing and "Death Wobble Issues"
I don't believe you can put rear ZJ springs on a TJ. A 2" BB, yes you can. Get a set for cheap on fleabay (you'll only need 2).

ZJ springs are the same unsprung length as TJ springs. However, they have a heavier spring-rate so they don't sag nearly as much. I had no idea how much it lifted the front of mine over stock but if I were to guess I'd say it was about 2.5". I can't guarantee the DW that you are worried about because lifting does change the suspension geometry.
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Old 08-08-2012, 10:41 PM   #10
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don't forget you will need an alignment. changing front end height changes toe and caster.
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Old 08-09-2012, 10:05 AM   #11
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Any particular years of the XJ's / ZJ's should I be looking at for an easy swap for my 97 TJ?
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Old 08-09-2012, 03:45 PM   #12
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How would camber and caster change on a solid front axle?

I also have a 2" BB but my front end is about 2-3" lower in the front than the back. Could i just add the ZJ springs and keep the 2"BB pucks in the front or would that be too much? Figuring for a v8 zj not up ciuntry.
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Old 08-09-2012, 04:29 PM   #13
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How would camber and caster change on a solid front axle?

I also have a 2" BB but my front end is about 2-3" lower in the front than the back. Could i just add the ZJ springs and keep the 2"BB pucks in the front or would that be too much? Figuring for a v8 zj not up ciuntry.
Replacing the 2" BB up front with the ZJ springs leveled my Jeep out perfect. I wouldn't recommend using both.
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Old 08-09-2012, 06:02 PM   #14
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Replacing the 2" BB up front with the ZJ springs leveled my Jeep out perfect. I wouldn't recommend using both.
What do you have in the back a bb?
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Old 08-09-2012, 06:16 PM   #15
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What do you have in the back a bb?
I have neither now, but in the pictures above I had ZJs up front and a 2" BB in back along with a 1.25" BL. I have a 3" SL now with the BL.
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Old 08-09-2012, 08:16 PM   #16
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How would camber and caster change on a solid front axle?
camber doesn't change. caster and toe does tho...due to the steering and 4/5-link suspension geometry.

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