Rubi front springs,which side does the stiffer one go on? - JeepForum.com

 
LinkBack Thread Tools
post #1 of 14 Old 09-02-2012, 05:11 PM Thread Starter
MAC57
Registered User
2008 JK Wrangler 
 
Join Date: Jul 2005
Location: Whitby
Posts: 97
Rubi front springs,which side does the stiffer one go on?

Swapping the stock springs in my 08 Sahara for take offs from a 4 door Rubi to help with sagging when I'm towing.Rears are the same part number, fronts though have two different numbers, one ends in 15 and one in 16. On my Sahara they are both 14's. I know the 16 is the stiffer of the two, but which side does it go on, passenger or driver? And why?


MAC 57
97 TJ ,03 TJ, 08 JK
MAC57 is offline  
Sponsored Links
Advertisement
 
post #2 of 14 Old 09-02-2012, 05:20 PM
RockyClymer
RedRock4Wheeler
 
RockyClymer's Avatar
2008 JK Wrangler 
 
Join Date: Apr 2008
Location: Colorado
Posts: 4,793
If I had to guess....which is what it is (not sure why two part numbers, the stock on my 08 JK were the same) it would be passenger, because the gas tank is on the right side...

08 JK 23S - Colorado Jeep Club No. 204
Too much to list - see my profile for details on build
16 JK Rubi with all the trimmings
NRA Life member
"It takes a special kind of stupid to believe criminals will follow gun laws."
I do not consider myself a smartass. I point out the obvious, search for the truth, and speak fluent sarcasm. I am, by experience, an accomplished curmudgeon.
RockyClymer is offline  
post #3 of 14 Old 09-02-2012, 05:35 PM
SubAtomicGenius
Registered User
2011 JK Wrangler 
 
Join Date: Jun 2011
Posts: 3,008
^^^ And the battery!
SubAtomicGenius is offline  
post #4 of 14 Old 09-02-2012, 05:39 PM Thread Starter
MAC57
Registered User
2008 JK Wrangler 
 
Join Date: Jul 2005
Location: Whitby
Posts: 97
I thought of that, but then thought that the weight varies depending on how full the tank is, so why build it stiiffer on that side when it isn't constant? And my tank always seems to be closer to empty anyway !! My guess was the drivers side would be the stiffer one since the front drive shaft and most of the t case are on that side, Anyone know for sure?

MAC 57
97 TJ ,03 TJ, 08 JK
MAC57 is offline  
post #5 of 14 Old 09-02-2012, 05:42 PM
BadTrainDriver
Registered User
2012 JK Wrangler 
 
Join Date: Nov 2011
Location: Dublin
Posts: 231
Going from 14's to a 15 and a 16 isn't even worth the effort...

Wait and pick up at least 18's.
On the rear, don't change unless at least 58's.

2012 Jeep Wrangler Unlimited Rubicon
Stock, for now...
BadTrainDriver is offline  
post #6 of 14 Old 09-02-2012, 06:22 PM Thread Starter
MAC57
Registered User
2008 JK Wrangler 
 
Join Date: Jul 2005
Location: Whitby
Posts: 97
Got 59's for the rear,they are on already,gave me a good 1/1/2" of lift, guess my old ones were also sagging after 90,000 kms. Got a bit too much rake to the front now so a little tweek up a level or two should do the trick. So, anyone know for sure which side the stiffer one goes on?

MAC 57
97 TJ ,03 TJ, 08 JK
MAC57 is offline  
post #7 of 14 Old 09-03-2012, 10:41 AM
MKWrangler
Registered User
2008 JK Wrangler 
 
Join Date: Jan 2012
Location: Las Vegas
Posts: 303
It sounds to me like whoever built that Jeep at the factory screwed up. They should both be the same number.
MKWrangler is offline  
post #8 of 14 Old 09-03-2012, 10:47 AM
ncb
Registered User
 
Join Date: Mar 2009
Location: Your mom's house
Posts: 4,989
My 2009 unlimited Rubicon had the higher number front spring on the right (passenger) side. Some JKs have matching fronts and some have the higher spring rate on the right front side.
ncb is offline  
post #9 of 14 Old 09-03-2012, 12:22 PM
jwmbishop
Accidental Obfuscator
 
jwmbishop's Avatar
2011 JK Wrangler 
 
Join Date: May 2011
Location: Corsicana, TX
Posts: 6,477
the higher rated spring is not necessarily for static weight. The auto trans Rubi has the stiffer right spring.

Ever noticed when you put it in 4lo when you shift into drive it torques and the body leans a bit to the right? The Rubis lower transfer makes it worse so a stiffer spring helps absorb and even out the torque. A stick doesn't load when clutched so the standards have equal springs. the right front for an auto Sahara is rated just under the Rubi auto right. The diff is so small that it is conceivable that when marrying chassis to builds they can use one for another in some cases and stay within a wide tolerance - as well as dealer replace some with another in maintenance and repairs...

J Wm Bishop EA, ASADE
The wagon should, of course, be as light as possible, but strength should not be sacrificed to lightness, for on any but the regularly traveled roads, the wagon will get many a hard knock...
jwmbishop is offline  
post #10 of 14 Old 09-03-2012, 03:43 PM Thread Starter
MAC57
Registered User
2008 JK Wrangler 
 
Join Date: Jul 2005
Location: Whitby
Posts: 97
Thanks J Wm for explaining. Mine is a standard so I should use matching springs then. I'll do what BadTrainDriver suggested and look for a pair of 18's

MAC 57
97 TJ ,03 TJ, 08 JK
MAC57 is offline  
post #11 of 14 Old 09-03-2012, 04:36 PM
ncb
Registered User
 
Join Date: Mar 2009
Location: Your mom's house
Posts: 4,989
My standard had a 17/18 front combo.
ncb is offline  
post #12 of 14 Old 09-03-2012, 05:16 PM
jcgribks
Registered User
2012 JK Wrangler 
 
Join Date: Nov 2010
Location: Olathe
Posts: 142
I'd put the stiffer one on the passenger side as the torque of the motor puts more load on the right side.
jcgribks is offline  
post #13 of 14 Old 09-05-2012, 09:00 PM
jmb6420
Engr. & Mechanic 08 Rubi
 
jmb6420's Avatar
2008 JK Wrangler 
 
Join Date: Apr 2011
Location: Tulsa
Posts: 566
Quote:
Originally Posted by jcgribks View Post
I'd put the stiffer one on the passenger side as the torque of the motor puts more load on the right side.
This is correct, and also the way my 08 Rubi stick came from the factory. Higher number to passenger side.

Mike
08 Rubicon Red Jeep Club #629

"You can't fix stupid" Ron White

ɹǝʌo ǝɯ dıןɟ 'sıɥʇ pɐǝɹ uɐɔ noʎ ɟı
jmb6420 is offline  
post #14 of 14 Old 09-06-2012, 12:29 PM
starscream
Registered User
1981 CJ5 
 
Join Date: Oct 2003
Posts: 489
Interesting stuff. I would've guessed left (drivers) side should be stiffer to offset the weight of the driver.
starscream is offline  
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.



Email Address:
OR

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.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Jeep Forums Replies Last Post
Benefit of stiffer springs..... clg82 TJ Wrangler Technical Forum 20 06-06-2012 03:39 PM
Stiffer Springs for Front (Mopar Part #) - bumper and related things jeepruski JK Wrangler Technical Forum 3 07-09-2007 08:42 PM
rubicon springs stiffer than others Bill_Dunnigan TJ Wrangler Technical Forum 6 04-08-2007 07:48 PM
Stiffer front springs for stock height? FLMarine TJ Wrangler Technical Forum 20 12-21-2004 10:18 AM
Are the rubi springs 1" taller, or just stiffer than SEs? BNovak TJ Wrangler Technical Forum 8 11-09-2004 07:38 PM

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 On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome