1991 XJ rear shock mounting fabrication - JeepForum.com
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Building a Bumper?Ruffstuff Axle Simple Swap Kit!~Artec JK 1 TON SWAP~

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Unread 10-04-2012, 07:20 AM   #1
haloperformance
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1991 XJ Cherokee 
 
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1991 XJ rear shock mounting fabrication

Problem is limited reartravel. Relocated the axle mount to the tube itself instead of it catching rocks. Now i need to raise my upper mounts, more than likely trough the floors. I've come up with 3 basic options for this.

1. Put new shocks at and angle,keep them mounted under the truck, and possibly have them come to a point in the center (like this : /\ ) or maybe have them crisscross like an "X"

2. Cut out the floor and fab towers and tie them into the cage, with a near verical shock position

3. Use ford style towers and mount the on the subframe and run them that way.

4. Cantilevershocks.Probably the most difficult,and i can't see a way to do it without moving the gas tank into the rear, which eats up cargo room.

I've got a roll cage in my Jeep already, and have no problem with tying the shock towers into this. Been doing a lot of searching and not really see something i'm sold on. I use the area for storage (toolbox, coolers, etc) for the trail and want to lose as little space as possible.

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1991 XJ: 35"s, 4:56s 5.5"LA lift, stretched, locked, skids, caged, high steer, spray paint. I think it was stock at one point.
<-1978 CJ5 parts - click on my classified
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Unread 10-04-2012, 10:22 PM   #2
DualPurposeXJ
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I would go with option #2 it would be really easy to tie them into your cage.

Here's some pictures I've got saved


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Unread 10-05-2012, 07:27 AM   #3
haloperformance
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Thanks. I haven't come across those shots yet. My issue may be that i want to keep the back sealed up if i'm modding it. I do mostly rocks, but occasionally i have to do some water crossing. Just trying to keep water and debris out. I still have my backseat in my Jeep, just incase an extra seat is needed. I'm not opposed to but not wating to run a spanner from side to side. Again, trying to maximize available room. I guess is's time to roll it out of the garage to put the big tires on and start measuring. Just thinking out loud, i might be able to make something that combines a few of these ideas. If I take some 2x2, maybe 1/8 or 3/16" and cut some V notches it and weld it to make a tower that is similar to #2 but allows multiple shock locations to get the best angle, i could run a piece of hrew or dom up to my cage for strength. I think that if I make it this way, i could enclose it to keep the back dry, and still allow a longer travel shock while permitting multiple mounting angles. (Probably 3?) I will still likely run an off the shelf shock for the rear while running a true long travel up front. My leaves do not flex even near what my coils do, so I plan to save about 200 that way.
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1991 XJ: 35"s, 4:56s 5.5"LA lift, stretched, locked, skids, caged, high steer, spray paint. I think it was stock at one point.
<-1978 CJ5 parts - click on my classified
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Unread 10-06-2012, 03:56 AM   #4
ffjs87
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Just from a geometry point of view, shocks leaning to the center or crossed in an x will not function as needed. Even in severe articulation, most suspension flex is vertical. The center mounted shocks would be trying to go horizontal. Keep with the idea of in the body through the floor. One idea i thought of but never tried is to make an enclosed box of 1/8 steel rectangular tube with a cap. Come through the floor and anchor to the bottom with little ears. Hard to imagine, but from the side it would look like an upside down U with a tab left and right at the bottom. When the shock pushes up, it will try pulling from the surface below.
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Unread 10-06-2012, 10:22 AM   #5
haloperformance
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I think i know exactly what you mean. I'm thinking of something similar, but a little larger for the sake of adjustability... But even that may be overengineering things. Even though the travel is near vertical, i think putting it in a larger box tube, like a 4x4, would allow slight movement in the shock itself so that it will not damage the tub by constantly rubbing against it. thanks for the input, too.
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1991 XJ: 35"s, 4:56s 5.5"LA lift, stretched, locked, skids, caged, high steer, spray paint. I think it was stock at one point.
<-1978 CJ5 parts - click on my classified
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Unread 10-29-2012, 10:38 PM   #6
koolaid5
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Let me know what you do here. I am having the same issue after my 9" swap and I don't want to put them through the floor either. I picked up the JKS adjustable cross-over upper shock mount

http://store.jksmfg.com/merchant2/me...ory_Code=Shock

and I am going to see what that does for me as soon as I get some time to install it. Hopefully with that and moving my lower mounts our and down I'll be ok.
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Unread 10-30-2012, 01:59 PM   #7
ltrail
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Someone used electrical grommet(like ones coming through firewall) to seal the hoop tubes coming through floor and had used a cv axle boot to seal the shock coming through. Wish I had a pic it was awesome idea that I had been kicking around nut haven't gone that far with mine yet.
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Unread 10-30-2012, 07:15 PM   #8
koolaid5
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I just don't want to take up an inch of my precious cargo area. I might think differently once I have a cage, but I'm not there yet, so. . . . No holes in the floor for now at least.
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Unread 10-30-2012, 10:08 PM   #9
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Im going to do a 9" swap in my xj. Is there a issue with running them in the stock location? Maby pictures?
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Unread 11-01-2012, 08:52 AM   #10
haloperformance
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Sandy screwed this plan up pretty well. I'm an insurance claims adjuster in NJ. This won't be even started for a few months.
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1991 XJ: 35"s, 4:56s 5.5"LA lift, stretched, locked, skids, caged, high steer, spray paint. I think it was stock at one point.
<-1978 CJ5 parts - click on my classified
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Unread 11-01-2012, 08:51 PM   #11
ltrail
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Quote:
Originally Posted by 64tbird View Post
Im going to do a 9" swap in my xj. Is there a issue with running them in the stock location? Maby pictures?
Could possibly run shocks from stock xj location. but they wont reach the axle mounts. Axle mounts will need to be moved.
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84 xj 350tbi, sm465, 203/205, 60/70. links and other junk.
what size sawzall blades does it take to fit 40's?
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Unread 02-27-2013, 03:32 PM   #12
koolaid5
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Did you ever do anything with your rear shocks? My XJ is still up on jack stands in my garage. Working on steering now, so I still have time before I have to address my rear shock issue.
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I've only been a Jeep owner a few weeks, but I'm finding that a Jeep is a lot like a woman. They clean up nice, but they're more fun when they're dirty...
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