NAXJA Forums -::- North American XJ Association  

Go Back   NAXJA Forums -::- North American XJ Association > NAXJA Unibody Jeep Technical Forums > Jeep Cherokee XJ (1984 - 2001) > Modified Tech Discussion
HOME Member FAQ Sponsor Info Rules Bylaws E-Mail

Modified Tech Discussion Forum for Tech related discussion for Modified XJ's and MJ's.

Reply
 
Thread Tools Display Modes
  #1  
Old October 10th, 2020, 11:17
NOTNSUV's Avatar
NOTNSUV NOTNSUV is offline
You Guys ROCK!
 
Join Date: Aug 2012
Location: Spring Creek, NV
Posts: 433
Rear Suspension Issues

Nearly new (mileage, not time) OME (DPG) 3.5 rear leafs with matching shocks.


XJ is bottoming out on nearly any bumps. Yes, I have rear tire carrier, HiLift, Rotopax and recovery gear loaded. The spring appear flat to me. Missing rear driver's side bumpstop. But it does it with that stuff not onboard.

Looking for recommendations to replace the rear springs, possibly the shocks and definitely get new bumpstops. Looking at Rubicon Express springs but they say 3.5" will accommodate 31" tires - I have 33 x 10.5s, albeit with trimmed fenders and Rusty's steel fender/flares.

The upper shock mount has been relocated per instructions from DPG at install.
Simply measure distance between mounts to determine shock length needed?

3.5" Springs?
Shocks?
Bumpstops? Don't care if they're rubber, poly, del-a-lum.. whatever.

Diagnostic technique advice welcome as well.

Have had this issue for a couple years and ended up parking it for the most part. Elk hunting the past few weeks made me really want it setup correctly, it's just too well built to let this take it out of service.

Thanks in advance. I'm not much of a member these days due to this (I think I'm still enrolled/paid) but want to get back on this thing.
__________________
I'm a 'Do-it-Twice' kinda guy.

1999 XJ Sport 4.0L Black
Reply With Quote
  #2  
Old October 10th, 2020, 11:33
TRCM's Avatar
TRCM TRCM is offline
NAXJA Member
 
Join Date: Jan 2007
Location: Newport News,VA
Posts: 1,280
Re: Rear Suspension Issues

post a pic of the shackle box area with the weight of the veicle on it....

Why are you sure it bottoms out ? Sounds ?

The shackle could be hitting the bumper mounting bolts...
Reply With Quote
  #3  
Old October 10th, 2020, 12:44
NOTNSUV's Avatar
NOTNSUV NOTNSUV is offline
You Guys ROCK!
 
Join Date: Aug 2012
Location: Spring Creek, NV
Posts: 433
Re: Rear Suspension Issues

Quote:
Originally Posted by TRCM View Post
post a pic of the shackle box area with the weight of the veicle on it....

Why are you sure it bottoms out ? Sounds ?

The shackle could be hitting the bumper mounting bolts...
Sags when stationary.
Seat of the pants 'bottoming'.
Yes, the sound.. bang bang.

The shackle is not hitting, the springs/shocks are not suspending.
__________________
I'm a 'Do-it-Twice' kinda guy.

1999 XJ Sport 4.0L Black
Reply With Quote
  #4  
Old October 10th, 2020, 12:49
NOTNSUV's Avatar
NOTNSUV NOTNSUV is offline
You Guys ROCK!
 
Join Date: Aug 2012
Location: Spring Creek, NV
Posts: 433
Re: Rear Suspension Issues

Any favorite bump stops for when I replace 3.5" springs?
__________________
I'm a 'Do-it-Twice' kinda guy.

1999 XJ Sport 4.0L Black
Reply With Quote
  #5  
Old October 10th, 2020, 13:12
RCP Phx RCP Phx is offline
NAXJA Forum User
 
Join Date: Mar 2003
Location: Phoenix,Az
Posts: 14,276
Re: Rear Suspension Issues

I'm with TCRM, post some pics of what you are dealing with before you do anything.
Reply With Quote
  #6  
Old October 10th, 2020, 13:34
NOTNSUV's Avatar
NOTNSUV NOTNSUV is offline
You Guys ROCK!
 
Join Date: Aug 2012
Location: Spring Creek, NV
Posts: 433
Re: Rear Suspension Issues

Pics to follow but could take a bit.

Thanks.
__________________
I'm a 'Do-it-Twice' kinda guy.

1999 XJ Sport 4.0L Black
Reply With Quote
  #7  
Old October 11th, 2020, 09:10
NOTNSUV's Avatar
NOTNSUV NOTNSUV is offline
You Guys ROCK!
 
Join Date: Aug 2012
Location: Spring Creek, NV
Posts: 433
Re: Rear Suspension Issues

Quote:
Originally Posted by RCP Phx View Post
I'm with TCRM, post some pics of what you are dealing with before you do anything.
Still waiting for an Admin to give me right to post Attachments. I have pictures. Dunno what's up with that.
__________________
I'm a 'Do-it-Twice' kinda guy.

1999 XJ Sport 4.0L Black
Reply With Quote
  #8  
Old October 10th, 2020, 13:11
TRCM's Avatar
TRCM TRCM is offline
NAXJA Member
 
Join Date: Jan 2007
Location: Newport News,VA
Posts: 1,280
Re: Rear Suspension Issues

If it's that bad, you should be able to cycle the springs ands see it hit the bumpstop....

Are you sure it isn't hitting the bumper bolts...mine did, and I would have said it wasn't.....

Springs are suspending, as they are holding it up....shocks DO NOT support weight (unless they are air shocks), all they do is limit how far & how fast the spring can cycle.

Shocks are probably fine....but the spring may or may not be.....I'd have to see pics to be sure.
Reply With Quote
  #9  
Old October 10th, 2020, 13:36
NOTNSUV's Avatar
NOTNSUV NOTNSUV is offline
You Guys ROCK!
 
Join Date: Aug 2012
Location: Spring Creek, NV
Posts: 433
Re: Rear Suspension Issues

..."Missing rear driver's side bumpstop"...
__________________
I'm a 'Do-it-Twice' kinda guy.

1999 XJ Sport 4.0L Black
Reply With Quote
  #10  
Old October 10th, 2020, 14:01
NOTNSUV's Avatar
NOTNSUV NOTNSUV is offline
You Guys ROCK!
 
Join Date: Aug 2012
Location: Spring Creek, NV
Posts: 433
Re: Rear Suspension Issues

Guess my membership expired. Just renewed for 2 years so might take awhile so I can attach pictures. Thanks for your patience.
__________________
I'm a 'Do-it-Twice' kinda guy.

1999 XJ Sport 4.0L Black
Reply With Quote
  #11  
Old October 10th, 2020, 14:06
NOTNSUV's Avatar
NOTNSUV NOTNSUV is offline
You Guys ROCK!
 
Join Date: Aug 2012
Location: Spring Creek, NV
Posts: 433
Re: Rear Suspension Issues

Wow, expire shows March '21. Need a mod to verify I'm in I guess.
__________________
I'm a 'Do-it-Twice' kinda guy.

1999 XJ Sport 4.0L Black
Reply With Quote
  #12  
Old October 10th, 2020, 17:21
Tim_MN's Avatar
Tim_MN Tim_MN is offline
Freakish Hand Strength
 
Join Date: Mar 2003
Location: Minneapolis, MN
Posts: 7,182
Re: Rear Suspension Issues

I have RE 3.5" leaf springs, DT-3000 shocks and polyurethane extended bump stops. No bottoming even with a full off-road gear load up, or when hauling an axle assembly in the hitch mounted cargo basket.
__________________
.
.

Quote:
Originally Posted by bimmerjeeper


Go ahead and slam the liftgate down on a blanket, and see how long you are laughing.
Reply With Quote
  #13  
Old October 10th, 2020, 20:04
NOTNSUV's Avatar
NOTNSUV NOTNSUV is offline
You Guys ROCK!
 
Join Date: Aug 2012
Location: Spring Creek, NV
Posts: 433
Re: Rear Suspension Issues

Quote:
Originally Posted by Tim_MN View Post
I have RE 3.5" leaf springs, DT-3000 shocks and polyurethane extended bump stops. No bottoming even with a full off-road gear load up, or when hauling an axle assembly in the hitch mounted cargo basket.
Can you link to the shocks (DT-3000 brand) and bumps please? RE I can find easily enuf I guess.

One contact suggested air shocks. hmm.

Thanks.
__________________
I'm a 'Do-it-Twice' kinda guy.

1999 XJ Sport 4.0L Black
Reply With Quote
  #14  
Old October 11th, 2020, 08:28
TRCM's Avatar
TRCM TRCM is offline
NAXJA Member
 
Join Date: Jan 2007
Location: Newport News,VA
Posts: 1,280
Re: Rear Suspension Issues

Quote:
Originally Posted by NOTNSUV View Post
Can you link to the shocks (DT-3000 brand) and bumps please? RE I can find easily enuf I guess.

One contact suggested air shocks. hmm.

Thanks.
NO ONE suggested air shocks......air shocks will cause you even more problems

I did say the only shocks that carry weight are air shocks....
Reply With Quote
  #15  
Old October 11th, 2020, 09:08
NOTNSUV's Avatar
NOTNSUV NOTNSUV is offline
You Guys ROCK!
 
Join Date: Aug 2012
Location: Spring Creek, NV
Posts: 433
Re: Rear Suspension Issues

Quote:
Originally Posted by TRCM View Post
NO ONE suggested air shocks......air shocks will cause you even more problems

I did say the only shocks that carry weight are air shocks....
Didn't mean YOU. "another contact" on a Facebook page suggested air shocks.
__________________
I'm a 'Do-it-Twice' kinda guy.

1999 XJ Sport 4.0L Black
Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Rear Suspension issues XJwheelman Modified Tech Discussion 7 September 27th, 2013 05:36
suspension issues JoeyBottles Modified Tech Discussion 5 July 25th, 2012 18:46
Front Suspension Issues mavrick Modified Tech Discussion 12 December 23rd, 2010 23:09
Front suspension Issues .... hemiriffic Modified Tech Discussion 4 March 15th, 2010 15:48
Suspension Issues... Grant H. Modified Tech Discussion 8 April 4th, 2007 19:38


All times are GMT -7. The time now is 20:56.


Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
NAXJA and NAXJA logo's Copyright NAXJA. All content/images Copyright NAXJA 1999-2014