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 May 31st, 2012, 09:14
Vanimal Vanimal is offline
NAXJA Forum User
 
Join Date: Dec 2011
Location: escondido, ca
Posts: 7,159
setting stop rings on coilovers

so i'm trying to calculate spring rates for the front of my xj when i swap in some coilovers.
the front corner weight is about 770lbs, the rear is about 670lbs.
in the rear, i am triple rate, 16" travel, 14" 200lb spring over a 16" 300lb spring.
I have the stop ring set about 3" above the dual rate slider at ride height. I do not know if this is right, but it was about 5-6" above it before and it seems a little better now. i cannot find any decent info online for setting the stop rings in a rock crawling/occasional fireroad sprinter/full bodied type setup. should i be running a softer upper spring but have my stop ring set much closer to the slider? i'm thinking a 135lb primary rate would be ideal for the front at 5" of lift, near 50% droop.
Reply With Quote
  #2  
Old June 3rd, 2012, 15:16
vetteboy's Avatar
vetteboy vetteboy is offline
NAXJA Forum User
 
Join Date: Nov 2005
Location: morganville, nj
Posts: 8,102
Re: setting stop rings on coilovers

There's nothing set in stone for it; just gonna depend on your rig/spring rates/valving/driving style/expectations/etc.

Luckily though it's easy to adjust externally. Set it so it hit at around half your uptravel and go from there...does it have excessive body roll? Run it down a little closer to the slider. Do bumps seem firmer than they need to be and are you getting into it earlier than needed (check: am I also using full travel on my shocks/bumpstops)? Maybe run it up a little more. Try half-inch increments up and down over the same rough patch and see what it does.

One thing to keep in mind, the slider doesn't move 1:1 with the axle/shock shaft. It only moves 1:1 with the upper spring, which may only be ~50% of the wheel travel. So if you go through 3" of bump travel, the slider may only move 1.5". So many people say oh, I've got 6" of uptravel so I'll set the stop at 3" above the slider...then complain that the ride is harsh. When in reality the slider is never coming close to the dual rate stop and you're just feeling the bumpstop crash against the initial rate instead.

What kind of preload are you gonna be running on the springs? You also wanna try to make sure the shock body is threaded enough for the adjustment to be useful on your rig. Sometimes with too short/light a bottom spring the slider sits well below the threaded portion of the body and you can't crank the stop down enough for it to function. Depending on the shock manufacturer, you may have to use up to a 2" longer spring (16" lower on a 14" shock) for this to happen.
Reply With Quote
  #3  
Old February 25th, 2021, 04:12
89Mock 89Mock is offline
NAXJA Forum User
 
Join Date: Oct 2019
Location: Reno
Posts: 335
Re: setting stop rings on coilovers

Good info still exists.
Reply With Quote
  #4  
Old February 25th, 2021, 06:33
Evan03 Evan03 is offline
NAXJA Forum User
 
Join Date: Jun 2017
Location: Idaho
Posts: 1,531
setting stop rings on coilovers

Yes dam good info.

I've been talking with accutune I just learned about slider stops.

Sent from my SM-G960U using Tapatalk
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
Suspension Cycle (bump stop setting) VAhasnoWAVES Modified Tech Discussion 5 August 8th, 2011 13:28
Coilovers razdrvr Modified Tech Discussion 17 July 27th, 2008 22:48
Coilovers on the XJ...... GPSflyer Advanced Fabrication and Engineering 20 July 29th, 2007 09:26
Coilovers? xj4fun Modified Tech Discussion 6 January 14th, 2007 08:52


All times are GMT -7. The time now is 22:02.


Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2022, vBulletin Solutions, Inc.
NAXJA and NAXJA logo's Copyright NAXJA. All content/images Copyright NAXJA 1999-2014