Spring perches took out my rear shocks... - JeepForum.com
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post #1 of 18 Old 04-11-2010, 03:55 PM Thread Starter
thejafe
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Spring perches took out my rear shocks...

Running the RE monotubes with my 3.5" Super-Flex kit and one of my rear shocks is leaking pretty bad. I'm running a CV/SYE kit and yep, from the looks of them my rear shocks are rubbing the spring perches at full flex. Pretty obvious that this is what took out the shock body.

I'm gonna be installing JKS shock extensions to remedy this problem and I'll also be replacing both rear shocks. Think I should replace the front shocks while I'm at it? Or do ya think that's unnecessary .

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post #2 of 18 Old 04-11-2010, 04:02 PM Thread Starter
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JKS shock extensions:



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post #3 of 18 Old 04-11-2010, 04:29 PM
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Quote:
Originally Posted by thejafe View Post
Pretty obvious that this is what took out the shock body.
and/or you're not running enough rear bumpstop to prevent the shocks from bottoming out.

The JKS's are ok, but put more leverage on the mounts. Take a look at the Nth Degree Shock Shifters...much better way to go.
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post #4 of 18 Old 04-11-2010, 04:33 PM
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Or look for a shock where the body end connects to the lower mount.
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post #5 of 18 Old 04-11-2010, 04:42 PM Thread Starter
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Well, there is am obvious scrape on both shocks from where the shock body is contacting, and rubbing across the spring perch. I'll have to flex out the Jeep and check on whether or not the shocks are bottoming out.
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post #6 of 18 Old 04-11-2010, 04:56 PM
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Quote:
Originally Posted by thejafe View Post
JKS shock extensions:
puts too much leverage on the stock mount. The stock mount will rip off of the tube.

Quote:
Originally Posted by thejafe View Post
Well, there is am obvious scrape on both shocks from where the shock body is contacting, and rubbing across the spring perch. I'll have to flex out the Jeep and check on whether or not the shocks are bottoming out.
cut away some of the spring perch
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post #7 of 18 Old 04-11-2010, 05:06 PM
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Don't run shock mount extensions, they increase the leverage against the mount which can encourage them to tear away from where they are welded to the axle tubes. Instead, flip your RE Monotubes over like I ran mine, RE's Monotubes work fine upside down. Flipping them gives you the required clearance away from the axle tube without the need for extensions.
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post #8 of 18 Old 04-11-2010, 06:06 PM
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Mount the shocks upside down - I think the monotubes can be mounted that way.
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post #9 of 18 Old 04-11-2010, 07:26 PM Thread Starter
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Guys, as far as I know the only way RE monotubes can be run is can-up as shown in both Jerry's pic and the pic of the JKS shock extensions. It also happens to be exactly how I've got mine setup . I will post pics of the issue tomorrow when I've got some daylight (and fresh batteries).

Hard to tell from this pic, but from the scrapes on the shock body it appears that the bottom of the shock makes contact with the spring perch. There are scrapes (off the top of my head) 1/4" wide but running maybe 4" vertically up the can on each of them:

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post #10 of 18 Old 04-11-2010, 09:27 PM
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Quote:
Originally Posted by thejafe View Post
Guys, as far as I know the only way RE monotubes can be run is can-up as shown in both Jerry's pic and the pic of the JKS shock extensions. It also happens to be exactly how I've got mine setup . I will post pics of the issue tomorrow when I've got some daylight (and fresh batteries).

Hard to tell from this pic, but from the scrapes on the shock body it appears that the bottom of the shock makes contact with the spring perch. There are scrapes (off the top of my head) 1/4" wide but running maybe 4" vertically up the can on each of them:

My monotubes did the exact same thing when I set my pinion angle for the CV driveshaft, I had to notch out the spring buckets.

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post #11 of 18 Old 04-18-2010, 06:01 PM Thread Starter
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Ok, here is a (crappy) pic:

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post #12 of 18 Old 04-18-2010, 06:06 PM
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You can notch the bad side of the spring perch just fine.
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post #13 of 18 Old 04-18-2010, 07:07 PM
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Sorry to hear about your bad shock. My Rancho shocks both have nice dents in them and are still kickin.
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post #14 of 18 Old 04-19-2010, 08:22 PM
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You can notch the bad side of the spring perch just fine.
That's exactly what I did


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post #15 of 18 Old 04-19-2010, 09:37 PM
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Hell you can cut off damn near the whole back half of the perch without affecting ANYTHING at all, but giving more shock clearance.

And OP, you need more bump stop, you bottomed out the shocks to get scrapes that far down the tube. THAT is what caused the shock to leak.

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