Bump stop cup cup...replacement. - Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > TJ Jeep Wrangler Forum > TJ General Discussion Forum

Join Wrangler Forum Today

Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 11-14-2012, 07:49 PM   #1
ClearH2O's Avatar
Join Date: Jul 2011
Location: Clearwater, FL
Posts: 46
Bump stop cup cup...replacement.

Ok, so after a search of threads on here I don't find any write ups on replacing the bump stop cups on the spring tower.

Mine are extremely rusty as in metal separating into flakes. I am also doing a 2.5" lift right now as well and currently the entire front end is in various pieces on the garage floor right now.

The cups themselves are so rusted that the bolt that holds the cup is not discernible to the cup itself due to the oxidation. So I cant get a socket on it at all (either side) and what I am thinking is to grab the saws all and just cut it off and then dangle a magnet down into the shock tower to retrieve the other cut half.

Any feedback on this strategy??? Any better strategies???

ClearH2O is offline   Quote
Old 11-14-2012, 07:58 PM   #2
Commercial Member

WF Supporting Member
kfdjason7620's Avatar
Join Date: Apr 2011
Location: Kenly, NC
Posts: 3,962
Isn't it threaded into the drop down "tower" above it? If so then the magnet wont work. You will have to drill it out. Search "wrangler jounce bumper" on ebay

kfdjason7620 is offline   Quote
Old 11-14-2012, 08:10 PM   #3
UnlimitedLJ04's Avatar
Join Date: Aug 2010
Posts: 8,400
you can get a new cup & jounce from the junkyard, ZJ fronts will fit the TJ front and rear. Also crown automotive sells new jounce bumpers.

the tower is threaded, so if you somehow cut the cup off without disturbing the tower, you're still left with a bolt threaded into the tower. that you can't get off.

my suggestion is take a wire wheel on a dremel, shove that up in the cup and clean as much rust off as you can. then take a new grade 8 nut, a big one, say something that uses a 3/4" socket, and super glue it to the rusted bolt. Then turn your welder up hot and weld that nut to the rusted bolt from the inside of the nut. Wait till it cools, then grab on to the bolt with your socket and see if you can twist it out. You'll want spray PB Blaster directly into the top of the tower so make sure the bolt is plenty soaked before starting.

worst case scenario, you have to cut the tower off and build a new one out of pipe.
UnlimitedLJ04 is offline   Quote
Old 11-14-2012, 08:24 PM   #4
Irongrave's Avatar
Join Date: Apr 2011
Location: Erie, PA
Posts: 2,800
Send a message via AIM to Irongrave
on my dad's rig the front bump stops were shot. one was gone and the other wasn't far behind.

We went a little crazy on the fix. We cut the old bumpstops out. Drilled a 2.5inch hole in the top then welded in a set of Air bump can's followed by bolting in a 4inch travel Sway-A-Way air bump

Irongrave is offline   Quote
Old 11-14-2012, 08:39 PM   #5
ClearH2O's Avatar
Join Date: Jul 2011
Location: Clearwater, FL
Posts: 46
Well I wasn't sure if the tower was threaded but I had a suspicion. Damn!!! Worst case scenario has now been realized.
ClearH2O is offline   Quote
Old 11-21-2012, 11:59 AM   #6
ClearH2O's Avatar
Join Date: Jul 2011
Location: Clearwater, FL
Posts: 46
Ok just a wrap on how I handled my jounce/bump stop cup dilemma.

Luckily, I had a pretty simple work around. I took a pipe wrench to the cup itself as I hoped and luckily realized the rust was limited to the metal exposed to the elements. I turned to the the left and the cup and bolt moved together. From there I was able to get a pair of vice grips on the remaining bolt head and slowly back it out. In addition, the threads holding the bolt broke apart making it easier to remove but require another work around to reinstall.

For the reinstall I simply used a tap and dye set to rethread a 1/2" bolt through and then drill out the existing hole in the new jounce/bump stop cup to accommodate. 👍Bam it was done and good as new.

ClearH2O is offline   Quote

bump stops , clearh2o , suspension problem

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Download our Mobile App

» Featured Product

All times are GMT -5. The time now is 08:21 PM.

User Alert System provided by Advanced User Tagging v3.1.0 (Pro) - vBulletin Mods & Addons Copyright © 2015 DragonByte Technologies Ltd.

Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC.
Wranglerforum.com is not in any way associated with the Chrysler Motors LLC