1998 TJ rear coil spring "perch" - Jeep Wrangler Forum
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Old 12-05-2011, 04:42 PM   #1
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1998 TJ rear coil spring "perch"

Hello to all-

I just attempted to have my Jeep inspected and it failed. The rear coil spring lower perch (that is what the mechanic called it) on both sides is completed rotted. Yes, he showed me and they are rotted!! I'm trying to find some to buy, but I'm not sure if the terminology I am using is correct. Can anybody help? Everything is stock on it. Thanks

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Old 12-05-2011, 04:52 PM   #2
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My driver side center was rotted away and i ground out the bad stuff and replaced it by welding a 2.5 steel pipe cap in its place , after paint it looks stock

hope this helps

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Old 12-05-2011, 04:59 PM   #3
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Well, not really. Im in the process of showing it to someone who wants to buy it and need to fix it ASAP. Thank you for the reply though.
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Old 12-05-2011, 05:55 PM   #5
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I had the same problem, I ended up getting a rear axle that was just the shell. Could have swapped the guts out but since I have never done that before. I cut and ground the plates off and marked them very well and re welded them back onto my original housing. Problem solved. It just takes time and alot of grinding.
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Old 12-05-2011, 06:40 PM   #6
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Thanks guys. Is there anything else I need besides the mounts? What about coil spring isolators or Pigtail Locater and Retainer? Hell, I don't even know what pigtail locater is!

Coil Spring Bucket, Centered - RuffStuff Specialties
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Old 12-05-2011, 08:29 PM   #7
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Are these for relocating the rear coil springs? I wonder how the Jeep would ride with the rear shocks relocated?


Quote:
Originally Posted by gerb04 View Post
Thanks guys. Is there anything else I need besides the mounts? What about coil spring isolators or Pigtail Locater and Retainer? Hell, I don't even know what pigtail locater is!

Coil Spring Bucket, Centered - RuffStuff Specialties
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Old 12-05-2011, 08:39 PM   #8
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Are these for relocating the rear coil springs? I wonder how the Jeep would ride with the rear shocks relocated?
No. My lower coil spring perches/cup have pretty much rotted out, so I need to replace them.
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Old 12-05-2011, 08:43 PM   #9
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Okay! I've read a few posts about relocating the springs and an improvement in the ride.


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No. My lower coil spring perches/cup have pretty much rotted out, so I need to replace them.
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Old 12-05-2011, 08:45 PM   #10
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Quote:
Originally Posted by gerb04 View Post
Thanks guys. Is there anything else I need besides the mounts? What about coil spring isolators or Pigtail Locater and Retainer? Hell, I don't even know what pigtail locater is!

Coil Spring Bucket, Centered - RuffStuff Specialties
those are centered perches, and while they would work if you have adjustable control arms they won't be lined up perfectly with stock arms. In the rear, the stock perch isn't perfectly centered on the axle tube, it's off just a fuzz.

Take a look at the rest of the brackets, see if those are rusted as well. Especially look closely at the track bar bracket. If those are trashed as well, then just have all the brackets replaced...or better yet install a Ford 8.8 with new brackets (if you have a D35c).

Rubicon Express Bracket Kit
or
Poly Performance Brackets

If the coil buckets are the only thing that are bad, then just replace the coil buckets with these:
Rubicon Express RE9979 - Rubicon Express Suspension Components - Overview - SummitRacing.com
Rubicon Express RE9978 - Rubicon Express Suspension Components - Overview - SummitRacing.com
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Old 12-05-2011, 09:02 PM   #11
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those are centered perches, and while they would work if you have adjustable control arms they won't be lined up perfectly with stock arms. In the rear, the stock perch isn't perfectly centered on the axle tube, it's off just a fuzz.

Take a look at the rest of the brackets, see if those are rusted as well. Especially look closely at the track bar bracket. If those are trashed as well, then just have all the brackets replaced...or better yet install a Ford 8.8 with new brackets (if you have a D35c).

Rubicon Express Bracket Kit
or
Poly Performance Brackets

If the coil buckets are the only thing that are bad, then just replace the coil buckets with these:
Rubicon Express RE9979 - Rubicon Express Suspension Components - Overview - SummitRacing.com
Rubicon Express RE9978 - Rubicon Express Suspension Components - Overview - SummitRacing.com
Thanks UnlimitedLJ04. The mechanic told me that just the perches need replacement. Do I need to get coil spring isolators also?
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Old 12-05-2011, 09:49 PM   #12
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Quote:
Originally Posted by gerb04

Thanks UnlimitedLJ04. The mechanic told me that just the perches need replacement. Do I need to get coil spring isolators also?
You should be able to salvage the insulators. They are only a piece of thin rubber. Just had the coils out of mine and after 135,000 miles and salty new england roads, the insulators were just fine.
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Old 12-05-2011, 09:50 PM   #13
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Originally Posted by gerb04 View Post
Thanks UnlimitedLJ04. The mechanic told me that just the perches need replacement. Do I need to get coil spring isolators also?
as long as the stock isolators are fine, you don't need them. the isolators are the rubber pad on the upper spring perch.

check the rest of the frame for rust too...upper and lower control arms mounts and t-case skid mounts are common to rust out. catch it now before it becomes a big problem.
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Old 12-06-2011, 05:21 AM   #14
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Thanks guys.

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