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Old 03-06-2013, 12:55 PM   #1
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Any difference in springs?

I just bought me a 2012 Sahara and last night I was able to find a soft top for it from a 2012 Rubicon. The guy that sold me the top, also gave me his upper and lower control arms, both track bars and springs form the Rubicon. My question is, is there any difference between the springs that came on my Sahara and the Rubicon springs? I plan on going the 2 1/2" spacer lift and run some 35's, may swap the springs if there are any difference.

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Old 03-06-2013, 01:08 PM   #2
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It really depends on what you have now on the Sahara, what he gave you and your approach for acheiving the 2.5" spacer lift, and what weight you might add later. For spring size, look at the tags on them (both the ones on your Sahara and the ones given to you) and post the numbers on them or pictures of them. If the ones given to you have a "higher spring number", then they may be useful to you with the spacer kit...especially if you add more weight via bumpers and/or winch down the road.

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Old 03-06-2013, 01:10 PM   #3
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The springs may be different - you need to compare the spring rates by looking at the last two digits on the tags. Higher number = stiffer/taller springs.

But the control arms, trackbar etc. are the same on all jk's.
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Old 03-06-2013, 01:15 PM   #4
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Thanks guys, I am offshore for the next 14 days and will not be able to get the numbers, but I will definitely check when I get in.
My main concern is if they are any "beefier" I would like to replace them in case I ever go to a winch and replacement front bumper in the future.
I figured there are some differences, but now I know where to look to see if they are in fact different springs.
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Old 03-06-2013, 03:16 PM   #5
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I swapped my front 13's (lowest factory rate) for 18's up front and from 55's to 60's in the rear on my 2012 2dr Sport and gained about 2" of height all around. I also swapped on the red shocks but I think you already have those.
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Old 03-08-2013, 02:37 PM   #6
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Spring change

Quote:
Originally Posted by murf1976 View Post
I swapped my front 13's (lowest factory rate) for 18's up front and from 55's to 60's in the rear on my 2012 2dr Sport and gained about 2" of height all around. I also swapped on the red shocks but I think you already have those.
I was looking to get an after market bumper front and rear and was also looking at a 2.5 lift to make up for the extra weight however, after reading your post about the stock spring change you gained 2" all around.

If that is the case, I have the same spring setup you had. Did you really gain 2" of solid lift with the spring change alone? Did it eliminate the factory rake stance or to address that a level kit or front spacer would still need to be purchased?

Do you have any pictures you can share as well? Thanks
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Old 03-09-2013, 12:06 AM   #7
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from what I understand, the springs for your vehicle are installed late in the build process and are dependent on some variables such as trim, options, etc. 2 seemingly identical JK's may have different springs completely.

as for the control arms, nothing wrong with having spare commonly broken parts! I would never let mine go!
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Old 03-10-2013, 05:42 AM   #8
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Originally Posted by D.B. View Post
I was looking to get an after market bumper front and rear and was also looking at a 2.5 lift to make up for the extra weight however, after reading your post about the stock spring change you gained 2" all around.

If that is the case, I have the same spring setup you had. Did you really gain 2" of solid lift with the spring change alone? Did it eliminate the factory rake stance or to address that a level kit or front spacer would still need to be purchased?

Do you have any pictures you can share as well? Thanks
Yeah I measured before and after and I gained just under 2" on all corners. Probably 1 6/8" or so but I didn't really pay that much attention and I can't remember exactly how much. No issues with driveshafts or brake lines, and no need for a new trackbar to centre the axle. It must have shifted but not by a noticeable amount. I thought I might want to get adjustable LCAs to address caster and improve handling but I haven't found that necessary either. The only thing I am going to do is get some longer JKS swaybar disconnects. Right now with the factory links, when I disconnect it's difficult to get them reconnected. I have to drive one front wheel up onto a rock, connect, and then repeat on the other side. Otherwise the links don't meet up with the mounts and I'm not strong enough to force the swaybar back into position.

As for the factory rake... I never really thought my JK had a noticeable rake anyway. But since I gained equal height all around, I would think that this spring swap would NOT fix your rake, so you might want to level the front with spacers.

As for pics, I'll gladly post some up but I'm out of the country at the moment and haven't figured out how to post pics from my iPhone. I'll post before and after shots in a couple days when I'm back at my PC.

BTW I picked up brand new take-off springs and shocks from a guy who was installing a real suspension lift on his new JKUR for $100 off Craigslist.
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Old 03-21-2013, 10:15 AM   #9
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I just looked, the rear springs are the same as I have and my front spring have 52126316AC and the Rubi springs have 52126318AC.
Can anyone tell me what differences I would see if I swapped springs?
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Old 03-21-2013, 10:24 AM   #10
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I'd guess from a 16 to an 18 up Front, you'd Gain about .50"-.75" of Lift.
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Old 03-21-2013, 10:43 AM   #11
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Originally Posted by troy b View Post
I just looked, the rear springs are the same as I have and my front spring have 52126316AC and the Rubi springs have 52126318AC.
Can anyone tell me what differences I would see if I swapped springs?
.25 to .50 maybe! Not enough to go through the Hassel of the install
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Old 03-21-2013, 12:18 PM   #12
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There is no such thing as "Rubicon springs." If anything, it's "4 door springs" vs. "2 door springs." Most 4 doors come with taller & stiffer springs than the 2 doors to compensate for the extra weight.

That's why this whole approach of swapping OEM springs really only works for 2 doors. Most 4 door springs are already very close to the tallest springs available, so more likely than not you won't gain anything by swapping springs from another Jeep. Double-check the part numbers to make sure.

I swapped my 2 door springs (13/55's) for my buddy's 4 door springs (18/59's) and gained 1.5" in the front and 1" in the rear. Adding a 1" spacer gave me a 2.5" boost in the front and 2" boost in the rear.
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Old 03-21-2013, 12:37 PM   #13
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.25 to .50 maybe! Not enough to go through the hassel of the install
+1
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Old 06-08-2014, 02:38 AM   #14
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Originally Posted by murf1976 View Post

Yeah I measured before and after and I gained just under 2" on all corners. Probably 1 6/8" or so but I didn't really pay that much attention and I can't remember exactly how much. No issues with driveshafts or brake lines, and no need for a new trackbar to centre the axle. It must have shifted but not by a noticeable amount. I thought I might want to get adjustable LCAs to address caster and improve handling but I haven't found that necessary either. The only thing I am going to do is get some longer JKS swaybar disconnects. Right now with the factory links, when I disconnect it's difficult to get them reconnected. I have to drive one front wheel up onto a rock, connect, and then repeat on the other side. Otherwise the links don't meet up with the mounts and I'm not strong enough to force the swaybar back into position.

As for the factory rake... I never really thought my JK had a noticeable rake anyway. But since I gained equal height all around, I would think that this spring swap would NOT fix your rake, so you might want to level the front with spacers.

As for pics, I'll gladly post some up but I'm out of the country at the moment and haven't figured out how to post pics from my iPhone. I'll post before and after shots in a couple days when I'm back at my PC.

BTW I picked up brand new take-off springs and shocks from a guy who was installing a real suspension lift on his new JKUR for $100 off Craigslist.
Same here, I have a 2Dr sport and a new buddy I met on this forum gave me his springs off his jku with the same numbers you got off your new springs. I had the 13's and 55's out back. When all was swapped, including the long arms he gave me too, I got 2+ inches for sure! More like 3" total. It was amazing, it's worth the swap for sure! Get it done for a cheap 2 plus lift no doubt.

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