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Unread 05-03-2011, 03:22 PM   #1
leadfootny
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1996 ZJ 
 
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How to identify sagging springs

Hi, I am getting ready to do a f>r swap with the iro benchmark kit. I was wondering if there is anyway to tell if my front springs have sagged any..say by measuring the height to the bumper or something like that. I would just buy new rear springs, except this needs to be done on a tight budget and since I kind of excluded the price of a rear trackbar when asking for permission from the wife (told her it would run ~450, when I'm planning on 700) I know another 125 or so for the springs would send me to the dog house permanently...

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Unread 05-03-2011, 03:50 PM   #2
Candymancan
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Im not sure exactly but i remember someone on this forum saying if you measure from the middle of the rim up to the fender on the bottom then it should be 19 inchs
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Unread 05-03-2011, 03:56 PM   #3
KingtheZJ
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Quote:
Originally Posted by Candymancan View Post
Im not sure exactly but i remember someone on this forum saying if you measure from the middle of the rim up to the fender on the bottom then it should be 19 inchs
should be 18 from the center of the hub to the fender. if you're sagging just get a little spacer or a front stock spring isolator (.75")
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Unread 05-03-2011, 04:07 PM   #4
Candymancan
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Originally Posted by KingtheZJ View Post
should be 18 from the center of the hub to the fender. if you're sagging just get a little spacer or a front stock spring isolator (.75")

Cant be 18 can it ? Coulda sworn i measured mine and it was 19 on both Jeeps, and 18 3/4 in the rear of my 5.9 (suspect my springs in the rear might be saggin a tad)

I'll go measure them again but im pretty sure it was 19
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Unread 05-03-2011, 07:58 PM   #5
KingtheZJ
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http://www.google.com/search?q=site%...ient=firefox-a
general consensus is its 18

ooh maybe you have upcountry!
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Unread 05-03-2011, 08:05 PM   #6
kachink
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Wow, mine's kind of wonky! I just measured
Front Driver = 18"
Rear Driver = 19"
Front Pass = 18.5"
Rear Pass = 18.5"
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Unread 05-05-2011, 02:52 PM   #7
leadfootny
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Ok, so my fronts are ~17 1/8 which means they are sagging pretty good. I am assuming that a 3/4-7/8 inch sag in the front will be less than that when the springs are moved to the rear. Am I correct in this thinking? Would a 1 inch puck do the trick without a noticeable rake?
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Unread 05-05-2011, 06:28 PM   #8
Foundrydude
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Man, when talking about nonstock springs there is no prescribed formula, sometimes you just gotta install and see where it's at. Realistically anyone who gives you a formula for ride height is +/- an inch. You're asking for fender lip heights and nobody's even mentioned tire size yet.

Just plan on poly lift pucks or spring trimming if it's a problem, that's the safe bet.

Vehicles that "sit right" have two kinds of owners. They're either lucky, or they put it together and then pulled a pair of springs to make an adjustment. The aftermarket NEVER tells you this in the sales literature but it's reality.

good luck with the project.
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