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Old 01-14-2013, 12:20 PM   #1
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Are these the wrong springs?

I've read a lot in the forum and am still not sure, what are standard rate springs for a 2 door hard top Jk. I have 14/56 in there now from the factory. I thought hard tops got stiffer springs for the extra weight. It has 3.73 as well. Don't know if that matters, just want to know for my own curiosity. Thanks

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Old 01-14-2013, 12:25 PM   #2
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It's a crap shoot. My '11 sport (base model with NO options) had 16/59s on it...and my '12 sport S with some options including Max Tow has 14/56s. I've even read that some guys have different springs from left to right. You never know what you're going to find under a JK.

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Old 01-14-2013, 12:31 PM   #3
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That's what I have on mine and I have a 2 door hard top too. I'm getting ready to get the 1.5 Tereflex performance lift kit for mine. The 14-56's are too weak .
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Old 01-14-2013, 12:32 PM   #4
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That's why I was wondering, I was just gonna do a leveling kit. Now it looks like I need to do springs.
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Old 01-14-2013, 12:33 PM   #5
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There is a lot of variation. My 07 2dr with hard top and tow package came with a 13 & 14 up front and 55s in the rear. I swapped them for 17/58's
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Old 01-14-2013, 12:37 PM   #6
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Quote:
Originally Posted by JK NOOB View Post
The 14-56's are too weak .
no difference in the strength of the stock springs. higher number springs are physically longer.
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Old 01-14-2013, 02:37 PM   #7
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My 2012 2dr Sport S with Max Tow and hardtop came with 14/56 too.

Quote:
Originally Posted by Jeepin_Dad View Post
no difference in the strength of the stock springs. higher number springs are physically longer.
I don't believe so, virtually the same length (less than 1/4", have pix somewhere) for the 18/59 I put in that lifted my Jeep about 1.25"
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Old 01-14-2013, 03:53 PM   #8
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Quote:
Originally Posted by WXman View Post
It's a crap shoot. My '11 sport (base model with NO options) had 16/59s on it...and my '12 sport S with some options including Max Tow has 14/56s. I've even read that some guys have different springs from left to right. You never know what you're going to find under a JK.
Too funny. So the guys on the assembly line come from the "Parts is parts, they're all the same" school of workers.
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Old 01-14-2013, 04:41 PM   #9
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Quote:
Originally Posted by MaskMan View Post
My 2012 2dr Sport S with Max Tow and hardtop came with 14/56 too.



I don't believe so, virtually the same length (less than 1/4", have pix somewhere) for the 18/59 I put in that lifted my Jeep about 1.25"
I've done a couple of these swaps, 14 vs 17, same spring other than extra 1/2 coil to add 1.5"



before and after measurements, just over 1.5" difference



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Old 01-14-2013, 04:58 PM   #10
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There are 2dr Rubicons that have those spring rates also. They're fine. My 10 has different rates left to right, probably why it appears to sit level.
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Old 01-14-2013, 08:31 PM   #11
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Interesting:
Quote:
Originally Posted by Jeepin_Dad View Post
I've done a couple of these swaps, 14 vs 17, same spring other than extra 1/2 coil to add 1.5"

before and after measurements, just over 1.5" difference
I can see a little difference in lenght, but not 1.5" worth.
I wonder if that visual is that much different due to older sagging springs.

Please tell me which one is which:
Click image for larger version

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Two are 56 and two are 59, I got just over an inch of lift

The fronts are a bit more obvious, but still not that much:
Click image for larger version

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These are 14's and 18's.
Got a little more than 1.5" lift out of these.

My JK now has a reverse rake too, with the old springs I was level.

My sport springs had 100mi and the JKUR springs under 10mi.

I have done two of these swaps and the spring lenght measurments were about the same, the fronts (both 14's to 18's) measure just a bit longer (in this case under 1/2", and about 1/2 a coil as you say), but not as much as the lift hight that was achieved.

So while they are a bit longer, the actual spring rate is higher to account for the actual lift hight changes.

Sorry for the Threadjack...
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Old 01-14-2013, 09:09 PM   #12
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Quote:
Originally Posted by Binx View Post
I've read a lot in the forum and am still not sure, what are standard rate springs for a 2 door hard top Jk. I have 14/56 in there now from the factory. I thought hard tops got stiffer springs for the extra weight. It has 3.73 as well. Don't know if that matters, just want to know for my own curiosity. Thanks
I have a 2010 2 dr soft top w/o max tow and had 14/55s. I switched to 18/59s and gained 2.25" all round. I have 3:73s as well. Your springs are fine...it really is a crap shoot.

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