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Unread 07-24-2013, 04:56 PM   #31
SLADE
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I didn't compare them side by side.

They do have a higher spring rate though (which is what I was after), so they are stiffer than the stock coils.

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Unread 07-24-2013, 05:25 PM   #32
pismo61
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Yes they do get taller,not much.They measure about 1/4 to 1/3 in. longer each number up.I have several of the front springs(14,15,16,17,and 18s)and put them against a wall and,measured them.14s are 17 inches and 18 are 181/2 inches.
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Unread 07-24-2013, 07:02 PM   #33
SLADE
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Quote:
Originally Posted by pismo61 View Post
Yes they do get taller,not much.They measure about 1/4 to 1/3 in. longer each number up.I have several of the front springs(14,15,16,17,and 18s)and put them against a wall and,measured them.14s are 17 inches and 18 are 181/2 inches.

Thanks, that's good to know.

This does sound about right. After I posted, I was thinking about when I put them in. The stock rear came out pretty easily, but it was noticeably tighter to get the 60 in. I didn't think to compare heights though at the time
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Unread 07-24-2013, 10:35 PM   #34
BILLETJKAUS
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The 18's are definitely longer, as I put them side by side prior to install. They have the same number of coils however. Still happy with my setup, on road and off road significant improvements, but I do have the Rubicon HD shocks as well.
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Unread 08-08-2013, 06:32 AM   #35
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Quote:
Originally Posted by JTPhoto View Post
Thanks for detail measurements.
Ok so this is my take on it.
Although you did get some lift with the new springs, they are in fact still the same length as the old ones. They are just heavier meaning they just don't compress as much and gave you a harder ride. If you decide to add a winch or aftermarket bumpers you will back in the same boat. You would in fact be better off with a 2" lift spring which is 2" longer to start and by the time it's all said and done you will end up 2" higher with a better ride as well.

To correct some false information.

Like was just mentioned in the previous posts, the coils are NOT the same length.

Unfortunately, I threw my stock 13/55 coils out and can't get a measurement or picture of them, BUT here is a comparison between a 16 and an 18 front coil spring. I'll get more measurements as I round up different coils.

Stock 16 coils: 17 1/2"

Stock 18 coils: 18 1/4"




52126218AC: 18 1/4"


52126216AC: 17 1/2"


Side by side comparison of a 16 and an 18 front coil spring


There is roughly a 3/4" difference between the 16's and 18's.

If the spring heights are consistent, there would be atleast a 1 1/2" (if not slightly more) difference in height between the 13's and the 18's.
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Unread 08-08-2013, 03:33 PM   #36
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great write up. i have a 1.75 rk bb and in the process of getting 18/59s with shocks. and now im considering 35s... +1 it should be stickied
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Unread 08-08-2013, 03:42 PM   #37
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Originally Posted by takeitsleazy View Post
great write up. i have a 1.75 rk bb and in the process of getting 18/59s with shocks. and now im considering 35s... +1 it should be stickied
Thanks.

I just stepped up to 35" MTR's yesterday. I'll get some pictures after I get the Jeep back from the shop (having 4.88's and True Tracs installed).
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Unread 08-09-2013, 03:17 PM   #38
mscottz
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I've been debating this swap. I have an 11 2 door Rubicon with 14/56 for springs. I have an XHD front bumper with XRC8 winch, and a full steel rear bumper with tire carrier. My flares are trimmed and 35" Treadwrights are on order with some 2.5" rear bump stops to be installed. I can't decide if I should try to go the cheap route with the 18/59 spring combo, or go with a 2.5 kit like OME or Teraflex. I don't want to go through the trouble of a spring swap just to find out I didn't net much lift out of it, and then end up ordering a kit anyway. I also want don't want to spend anymore than I have to, and something around 2" to 2.5" would be fine.
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Unread 08-09-2013, 03:21 PM   #39
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With the bumper and winch just skip the coil swap. Either the Teraflex or OME HD kit would be a good option for what you want.
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Unread 08-09-2013, 03:24 PM   #40
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18/60 coils, 1.25" wheel spacers and 35x12.50R17 Goodyear MTR/K.







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Unread 08-09-2013, 03:33 PM   #41
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Quote:
Originally Posted by mscottz View Post
I've been debating this swap. I have an 11 2 door Rubicon with 14/56 for springs. I have an XHD front bumper with XRC8 winch, and a full steel rear bumper with tire carrier. My flares are trimmed and 35" Treadwrights are on order with some 2.5" rear bump stops to be installed. I can't decide if I should try to go the cheap route with the 18/59 spring combo, or go with a 2.5 kit like OME or Teraflex. I don't want to go through the trouble of a spring swap just to find out I didn't net much lift out of it, and then end up ordering a kit anyway. I also want don't want to spend anymore than I have to, and something around 2" to 2.5" would be fine.

The 18/59 or 19/60 coils are really only good for about 1.5"-2" at the most. With the amount of lift you want to maintain, you would probably be better off going with a lift coil. You would end up needing to add a spacer on top of the 18/59 coils to net 2.5" of lift with the weight of your bumpers, winch, and full size spare.

I'm happy with my 18/60 coil combo, but they are not a replacement for a quality 2.5" lift coil.
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Unread 08-09-2013, 06:01 PM   #42
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How much stiffer is the ride after this swap? Anyone done this with stock equipment in a 2 door?
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Unread 08-09-2013, 06:08 PM   #43
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Originally Posted by jpin321 View Post
How much stiffer is the ride after this swap? Anyone done this with stock equipment in a 2 door?
When I was working on my lift write up I measured and tested several different springs.....it's a bit stiffer, but not something that would make it a bad decision for a stock jeep (no bumper, winch, or accessories) on a budget.....you might not even notice the difference.
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Unread 08-09-2013, 06:11 PM   #44
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It's a cheap swap I guess I could always put it back if I didn't like it. I'm thinking about doing the spring swap to hold me over till I can refill my budget.
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Unread 08-09-2013, 06:14 PM   #45
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Quote:
Originally Posted by jpin321 View Post
How much stiffer is the ride after this swap? Anyone done this with stock equipment in a 2 door?
When I first swapped them in, everything else was stock. I ran it for a little while with the stock shocks and then upgraded to the Bilstein shocks.

The ride was noticeably stiffer with the stock shocks. The Bilstein shocks gave me the ride I wanted.

I thought the stock coils where too soft and spongy, so the stiffer ride was a welcome change for me.
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