Replacing RC Coils - Jeep Wrangler Forum
Jeep Wrangler Forum

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

Join Wrangler Forum Today


Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 01-02-2013, 10:51 AM   #1
Jeeper
 
chrisfp88's Avatar
 
Join Date: Jun 2012
Posts: 1,308
Replacing RC Coils

Ok so I bought a RC lift kit and while I have not experienced a huge amount of sag I mitigated it by installing spacers in there for when I installed my new front bumper. So I want to take the spacer out to increase travel and enhance the lift overall. Does anyone know what coils come with the rough country lifts and which ones I should go up to? I plan on keeping the rough country shocks for now.

chrisfp88 is offline   Quote Quick Reply
Old 01-02-2013, 10:58 AM   #2
Jeeper
 
Join Date: Nov 2010
Posts: 248
Rough Country has been known to send replacement springs for sagging problems, you may want to inquire with them regarding that. But your signature is showing a Rubicon Express lift [?]

In general I would look at Poly Performance, Off-Road Evolution or Rock Krawler springs if I was in the market.

goodysgotacuda is offline   Quote Quick Reply
Old 01-02-2013, 11:17 AM   #3
Jeeper
 
chrisfp88's Avatar
 
Join Date: Jun 2012
Posts: 1,308
It came with a Rubicon Express lift, but only Rough Country makes the lift I have found that out upon further investigation. Given the fact that they are made in the same place, I just figured I would label it with the Rubicon. lol. Cool. Ya I know they will send out replacements but I need something that will hold the weight of the aftermarket bumpers.
chrisfp88 is offline   Quote Quick Reply
Old 01-02-2013, 12:55 PM   #4
MallCrawler

WF Supporting Member
::WF Moderator::
 
kjeeper10's Avatar
 
Join Date: Feb 2011
Location: Connecticut
Posts: 31,496
Vote for RK
__________________
2007 Rubicon/Rock Krawler TR 2.5 coils/rear TB/Rancho 9000 31/32XL shocks/Teraflex monster TB/Synergy highsteer,tie rod, ball joints/Hankook MT 315-75-16 on Level 8 ZX's/MC front SB links/Rancho geo brackets & shocks/Fox ATS stabilizer/Adams front DS=Frankinlift from hell.

Lifting your JK? Read this!!



Click HERE to become a WranglerForum Supporting Member!
kjeeper10 is offline   Quote Quick Reply
Old 01-02-2013, 01:06 PM   #5
Jeeper
 
onetraveller's Avatar
 
Join Date: Sep 2012
Location: Alaska
Posts: 674
If you are just replacing the springs, check out Polyperformance or Old Man Emu in addition to Rock Krawler. They are generally acknowledged as being superior springs. The Polys in particular can provide progressive springs for both front and rear. The RKs are front progressive and rear linear, the OME are all linear but have options for both medium and heavy duty.

Mike
__________________
2013 JKU Sahara, Commando Green - 2.5" Franken Lift - Rancho 9000xl shocks - 275/70r18 Cooper ST Maxx in summer - 265/70r18 Bizzaks in winter

http://www.wranglerforum.com/f202/re...ho-627602.html
onetraveller is offline   Quote Quick Reply
Old 01-02-2013, 01:48 PM   #6
Jeeper
 
chrisfp88's Avatar
 
Join Date: Jun 2012
Posts: 1,308
Quote:
Originally Posted by onetraveller View Post
If you are just replacing the springs, check out Polyperformance or Old Man Emu in addition to Rock Krawler. They are generally acknowledged as being superior springs. The Polys in particular can provide progressive springs for both front and rear. The RKs are front progressive and rear linear, the OME are all linear but have options for both medium and heavy duty.

Mike
Can you give a simple explanation between progressive and linear?
chrisfp88 is offline   Quote Quick Reply
Old 01-02-2013, 02:12 PM   #7
Jeeper
 
onetraveller's Avatar
 
Join Date: Sep 2012
Location: Alaska
Posts: 674
Simply put, a linear spring provides the same amount of resistance to compression for the entire length of the spring travel. For example a linear spring would provide 250lbs of resistance for every 1" of travel starting from a relaxed state until the coil was completely compressed.

On a progressive spring the amount of resistance changes as the spring is compressed. Most aftermarket springs are actually dual or triple rate springs where there is an initial soft spring rate, then a harder spring rate after a bit of compression. True progressive springs are more difficult to consistently manufacture than linear, dual or triple rate springs. It is also harder to tune the shock absorbers for non-linear springs since the spring rate changes somewhere or throughout the shocks cycle length.

The stock rear springs are progressive. You can tell a non-linear spring by either the change in coil spacing when relaxed or a change in coil diameter when relaxed. The stock rear springs are egg shaped, so the varying diameter indicates a progressive rate spring. The stock front springs are linear.

Here is a great example from Metal Cloak on its dual rate springs.

Metalcloak 3.5" Front Coil Spring, Dual-Rate, JK, Pair


The following companies produce progressive or multi-rate springs for Jeeps that I know of. There are likely others as well.

Polyperformance (Synergy), Rock Krawler, AEV, Metal Cloak.
__________________
2013 JKU Sahara, Commando Green - 2.5" Franken Lift - Rancho 9000xl shocks - 275/70r18 Cooper ST Maxx in summer - 265/70r18 Bizzaks in winter

http://www.wranglerforum.com/f202/re...ho-627602.html
onetraveller is offline   Quote Quick Reply
Old 01-02-2013, 03:20 PM   #8
Jeeper
 
Join Date: Nov 2010
Posts: 248
Quote:
Originally Posted by chrisfp88 View Post
It came with a Rubicon Express lift, but only Rough Country makes the lift I have found that out upon further investigation. Given the fact that they are made in the same place, I just figured I would label it with the Rubicon. lol. Cool. Ya I know they will send out replacements but I need something that will hold the weight of the aftermarket bumpers.
Sounds good, just wanted to clarify. My RC springs were replaced about 10 months ago, they seemed to have held up fine since. I have plenty of weight from a cage, armor, bumpers, 125lb spare, etc. I wouldn't mind trying something different however, but coil-overs will likely be next.

Same suggestions for spring companies apply.

goodysgotacuda is offline   Quote Quick Reply
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Jeep Wrangler Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
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

Posting Rules
You may post new threads
You may 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




» Network Links
»Jeep Parts
» Featured Product

All times are GMT -5. The time now is 07:22 AM.



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