Spring rates... - JeepForum.com
Search  
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back JeepForum.com > Models > Jeep Grand Cherokee & Commander Forums > WJ Grand Cherokee Forum > Spring rates...

Savvy Billet LED Tail LightsWant to be able to SEE? DOT Approved Headlights for under We have FLASHLIGHTS! Great for your Emergency bag!

Reply
Unread 02-18-2013, 10:34 PM   #1
kc2mrg
Web Wheeler
 
kc2mrg's Avatar
2004 WJ 
 
Join Date: Sep 2008
Location: Ravenwood, West Virginia
Posts: 1,097
Spring rates...

I know there was a thread about this a long time ago but I can't find it at the moment... I'm on my phone. Anyways can someone tell me what the stiffest spring would be in the 4"-5" height range? I do alot of towing and the Rustys 2.5" aren't cutting it. So... what is the best spring that won't sag when a heavy load is applied to them? And what will give me that "leaf spring truck like" ride?

And no... I don't want to sell it and get a xj or yj so don't go there lol

I know IRO makes 4.5" HD rear springs I just didn't know how heavy duty they are

__________________
2004 Grand Cherokee Laredo 4.0
Rusty's 2.5" coil/shock lift
265/70/16 (~31") General Grabber AT2's
Superchips 3875 Flashpaq


West Virginia Jeep Club member
JEEPINWV.COM
kc2mrg is offline   Reply With Quote Quick reply to this message
Unread 02-18-2013, 10:49 PM   #2
bradywgn71
Web Wheeler
 
bradywgn71's Avatar
2002 WJ 
 
Join Date: Apr 2011
Location: Tucson, Arizona
Posts: 1,051
If I remember correctly, Clayton had the stiffest 4.5" set at around 210lbs. front and rear. IRO HD rears were something like 250lbs.
__________________
2002 WJ Overland - 4.7HO - 231tc - 6" Clayton - 285/75-16 Cooper STT - ProComp 5129 wheels - Kevin's Offroad Belly Skid and Rock Sliders - JKS Track Bar and Disconnects - ProtoFab bumpers
bradywgn71 is offline   Reply With Quote Quick reply to this message
Unread 02-18-2013, 10:55 PM   #3
PowderHound
Registered User
2003 WJ 
 
Join Date: Mar 2009
Location: Broomfield, CO
Posts: 295
spring rate list thread
__________________
2003 WJ♦Inferno Red Limited(4.7 H.O., Vari-Lok axles)♦OME HD/BILLY 5100S♦IRO t-case skid, adj. tb, sway links♦Moog SS♦Factory tow package w/harness & tow hooks♦ Amp/12 sub box♦new bad b**ch passenger♦1993 XJ country♦lift/muds/winchbumper-sold♦build thread instead of long A$$ sig soon...
PowderHound is offline   Reply With Quote Quick reply to this message
Unread 02-18-2013, 11:09 PM   #4
PowderHound
Registered User
2003 WJ 
 
Join Date: Mar 2009
Location: Broomfield, CO
Posts: 295
On the IRO website it says the heavy duty 4.5 inch rear shocks are 60% over stock. When you upgrade Ill take your rustys coils if they arent sagging!
__________________
2003 WJ♦Inferno Red Limited(4.7 H.O., Vari-Lok axles)♦OME HD/BILLY 5100S♦IRO t-case skid, adj. tb, sway links♦Moog SS♦Factory tow package w/harness & tow hooks♦ Amp/12 sub box♦new bad b**ch passenger♦1993 XJ country♦lift/muds/winchbumper-sold♦build thread instead of long A$$ sig soon...
PowderHound is offline   Reply With Quote Quick reply to this message
Unread 02-19-2013, 07:11 PM   #5
kc2mrg
Web Wheeler
 
kc2mrg's Avatar
2004 WJ 
 
Join Date: Sep 2008
Location: Ravenwood, West Virginia
Posts: 1,097
Quote:
Originally Posted by PowderHound View Post
On the IRO website it says the heavy duty 4.5 inch rear shocks are 60% over stock. When you upgrade Ill take your rustys coils if they arent sagging!
No there not only have about 10-15k on them but I think my girlfriends dad wants them for his 02 wj but not 100% sure
__________________
2004 Grand Cherokee Laredo 4.0
Rusty's 2.5" coil/shock lift
265/70/16 (~31") General Grabber AT2's
Superchips 3875 Flashpaq


West Virginia Jeep Club member
JEEPINWV.COM
kc2mrg is offline   Reply With Quote Quick reply to this message
Unread 02-19-2013, 07:14 PM   #6
kc2mrg
Web Wheeler
 
kc2mrg's Avatar
2004 WJ 
 
Join Date: Sep 2008
Location: Ravenwood, West Virginia
Posts: 1,097
Looks like according to that chart I could do some IRO rears and either Clayton or teraflex fronts...
__________________
2004 Grand Cherokee Laredo 4.0
Rusty's 2.5" coil/shock lift
265/70/16 (~31") General Grabber AT2's
Superchips 3875 Flashpaq


West Virginia Jeep Club member
JEEPINWV.COM
kc2mrg is offline   Reply With Quote Quick reply to this message
Unread 03-14-2013, 03:20 PM   #7
C101Commando
Registered User
 
Join Date: Jan 2012
Location: Ridgecrest, Ca
Posts: 353
Quote:
Originally Posted by PowderHound View Post
I emailed zone about the 4" springs, 240# front and rear was the reply..
__________________
03 WJ, 4.7 Limited
C101Commando is offline   Reply With Quote Quick reply to this message
Unread 03-14-2013, 03:27 PM   #8
Kolak
Vendor
 
Kolak's Avatar
 
Join Date: Jun 2004
Location: Phoenix, AZ
Posts: 5,056
The Teraflex WJ springs are discontinued unfortunately.

I'm a Clayton and IRO dealer if anyone needs any springs.
__________________
Kolak Performance and Offroad
Member: Specialty Equipment Market Association
Telephone: 480 998-3661
kolak@aol.com or kolak@kolakperformance.com
Kolak is offline   Reply With Quote Quick reply to this message
Unread 03-14-2013, 05:00 PM   #9
C101Commando
Registered User
 
Join Date: Jan 2012
Location: Ridgecrest, Ca
Posts: 353
Anyone know the stock spring rate?
__________________
03 WJ, 4.7 Limited
C101Commando is offline   Reply With Quote Quick reply to this message
Unread 03-14-2013, 11:34 PM   #10
PowderHound
Registered User
2003 WJ 
 
Join Date: Mar 2009
Location: Broomfield, CO
Posts: 295
wjjeeps has them listed between 845-1085 lb, but this cant be inch/lbs. I think its total weight limit or something. I'm not sure how to convert the two. I was going to do the math but There is so many different standard spring rates for the WJ. I guess you would have to take a coil off and put weight on and see how much it would take to make it compress one inch. And I would guess that the rate is not constant thru the entire range of the coil. Any aftermarket coil is an upgrade and Kolak can get you the right setup. Those Cali girls in Bikini's will be wanting to wheel in no time LOL.
Just go with a good brand and you will be happy. Go with a heavier spring rate if you plan on towing or have added weight. Go with a lighter spring rate if you plan on flexing. Either way it's a win/win situation.
__________________
2003 WJ♦Inferno Red Limited(4.7 H.O., Vari-Lok axles)♦OME HD/BILLY 5100S♦IRO t-case skid, adj. tb, sway links♦Moog SS♦Factory tow package w/harness & tow hooks♦ Amp/12 sub box♦new bad b**ch passenger♦1993 XJ country♦lift/muds/winchbumper-sold♦build thread instead of long A$$ sig soon...
PowderHound is offline   Reply With Quote Quick reply to this message
Unread 03-16-2013, 09:48 PM   #11
C101Commando
Registered User
 
Join Date: Jan 2012
Location: Ridgecrest, Ca
Posts: 353
I saw the wjjeeps thing, didn't make a bit of sense. I can't come up with any way those numbers could be compared to the 175-250 pounds per inch rates of aftermarket coils. It'd just be nice to know if those 240 lb/inch BDS coils are replacing 125 pound stock coils or 200 pound stock coils..

If anyone has a stock coil laying around its not too hard to get a ballpark measurement of the rate.. a bathroom scale, a tape measure and a 2x4 can get close.
__________________
03 WJ, 4.7 Limited
C101Commando is offline   Reply With Quote Quick reply to this message
Unread 03-20-2013, 01:44 PM   #12
bugaboots
Registered User
2002 WJ 
 
Join Date: Feb 2012
Location: faribault, mn
Posts: 144
Wj Stock Spring Rate

i had e-mailed rocky-road a while back on some ome spring rates and they gave me a stock comparison. I was told that stock was 170# front and 160# rear. Take this how you will coming from rocky-road, all i have heard is bad about them.

On another note, this whole spring rate thing is driving me crazy, currently shopping for a lift myself.
__________________
1995 Cherokee 4.0 Stock(for now)
2002 Grand Cherokee Sport, OME HD lift, Bilstien 5100's, 63mm Bored t-body, IRO 2.5 exaust, 245/75/16 Revo2, Front tow hooks, 4.6L long rod stroker, Factory Jeep brush gaurd
bugaboots is offline   Reply With Quote Quick reply to this message
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the JeepForum.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.
Note: All free e-mails have been banned due to mis-use. (Yahoo, Gmail, Hotmail, etc.)
Don't have a non-free e-mail address? Click here for a solution: Manual Account Creation
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.


Thread Tools






Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. JeepForum.com is not in any way associated with Jeep or the Chrysler Corp.