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Unread 06-14-2012, 01:41 PM   #1
ttrevino
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1998 XJ Cherokee 
 
Join Date: Mar 2012
Location: Chappell Hill, TX
Posts: 85
Rear suspension bounces me all over the place!

On the '98 I bought a couple of months ago, it has a 4.5" suspension lift kit, full spring pack in rear (no lift blocks). I don't know what kind of shocks they are, but I'm wondering if they're bad? When I hit a decent bump or dip in the road, there are times I'll bounce high enough to hit my head on the roof.
When I just jump on the rear bumper and 'bounce' the jeep around, it appears to spring back to normal fairly quickly (the old fashioned way to test shocks), but I don't know of a better way?
Here are two pics of the left and right leaf springs and shock. Something I noticed on the springs, is that the bottom leaf doesn't match the curl of the upper ones, but tends to stick straight out on both sides. Is this making a difference?
Thanks, Tony

http://www.flickr.com/photos/chopped...in/photostream
http://www.flickr.com/photos/chopped...in/photostream

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Unread 06-14-2012, 01:47 PM   #2
the_weirdo
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1998 XJ Cherokee 
 
Join Date: Jul 2007
Location: Seattle, WA
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Your shocks are probably toast. The bottom leaf is called an "overload" leaf. It is not supposed to be curled.
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Unread 06-14-2012, 02:15 PM   #3
ttrevino
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1998 XJ Cherokee 
 
Join Date: Mar 2012
Location: Chappell Hill, TX
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Thanks for the info on the overload spring, I didn't know that. On the shocks, I'm assuming it doesn't matter that I have a 8.8 rear end on the Cherokee? I figured the shocks were probably garbage but wanted some opinions before I went out and replaced something that might or might not be bad.
Same note, any suggestions for replacement shocks? This is mainly a DD, streets, not dirt (unfortunately)...
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Unread 06-14-2012, 02:21 PM   #4
Timo_90xj
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1998 ZJ 
 
Join Date: Mar 2006
Location: Helsinki, Finland - on the European side of the Atlantic
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Get a picture of your rear shackle angles.

I'm 100% sure that at that lift height the shackle angle is probably really crappy -> that results in very rough ride. If the shackle is close to vertical or the bottom end is pointing forward, you need to get shackle relocation brackets. Shackles should be at around 45 degree angle (lower part to where the leafs mount pointing backwards) for optimal ride quality and flex.

edit: Since you wrote the rear won't keep bouncing up and down when you jump on the bumper, I highly doubt the shocks are bad. Post a pic of the shackles and we are much wiser on the cause of your rough ride..
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Unread 06-15-2012, 10:44 AM   #5
ttrevino
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1998 XJ Cherokee 
 
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Here are some pics, there is already some sort of extension on each shackle.

http://www.flickr.com/photos/chopped...in/photostream
http://www.flickr.com/photos/chopped...in/photostream

Another question, anyone know why the outside shackle mount would be bent in? It's like this on both sides, and I'm only assuming it's to keep the connection point tighter? Otherwise, I'm clueless as to why both sides would be bent like this. Rigged?

http://www.flickr.com/photos/chopped...in/photostream
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leaf springs , shocks , suspension

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