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Old 11-22-2012, 09:15 AM   #121
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Good info!! So I guess I would want 16's up front. Seeing as that's about all I really want for lift up there. Ohh I have an 06 2.4L.... No I just need to figure out what number spring I would need for the rear. If the 16 gives .5 to an inch. I would need about an inch to 1.5 in the rear? Correct?

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Old 11-22-2012, 09:31 AM   #122
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To clarify, that last post was directly referencing armyman's post and the numbers he mentioned, in case someone sees this out of sequence. Those were increases, not net gains over stock. My results were the same as Ohio's. I haven't seen 19s anywhere either, now that you mention it.

Oh by the way- you can use a wide skateboard wheel as a bump stop extension. They're the same or maybe even tougher polymer. There was some concern I read once about using skateboard wheels over retail marketed spacers for body lifts. (or, I would assume by implication, bump stop extensions) I feel that the anecdotal evidence supports their use. Plus, who can compete with a thirteen year old for the gorilla test?

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Old 11-22-2012, 09:55 AM   #123
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I haven't read entirety thru every post in this thread, but just to add some information, i help a good friend at his shop which he does all the lifts for a local Jeep dealership. We did a lift on a 2013 JKU, and same day did a lift on a Journal Rubicon. The springs that came out were the same, had the same tags, same length. I took the Rubicon springs home to put on my TJ. It has 4" RC springs on it with procomp mx6 Res shocks, my hopes will be to lower it about 1" to 1.5". I have flat fenders an a TT, so clearance isn't an issue, just wanting to get the Jeep down a Tad to help the family get in an out, an also maybe a little less top heavy.
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Old 11-22-2012, 01:11 PM   #124
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Racer, I'd be interested to see how that turns out. If you're at a true 4", I'm splitting the difference on like a 3/4" reduction, but I'm sort of guessing. Hope you post your results.

So while I was smoking the Thanksgiving bird, I threw the springs up there and snapped a pic. Keep in mind that the OE TJ springs have been at work since 97, so I expect they're a little shorter than new, but I don't know that for sure.



The measurements are in line with what I saw when I put them on my TJ, keeping in mind also that the steel wire is also .5-1mm thicker (measured @ midway-point.) as you go up in size from one PN to the next, so length isn't solely of direct effect.

Man. I gotta have me some 19s now... dangit... so CLOSE....

And no, if anyone is interested, it's certainly not all about $. I could certainly "spring" (Yep.. I just said that...) for some 3" springs. I just dig doing this kind of stuff.
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Old 11-22-2012, 01:16 PM   #125
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And in case anyone notices, yep, that's black pain on the police steelies on the right side and gray on the left.

I haven't decided which Liked best so I decided to drive it around with both and see what I liked best. I'm going gray, but now I have to find the time.
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Old 11-22-2012, 02:01 PM   #126
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Just had a thought and since you guys like to mix and match parts, does anyone know if the shocks off my 2010 Sahara would fit on my 2007 Grand Cherokee? I'm gonna measure it up after I eat some turkey.
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Old 11-22-2012, 02:26 PM   #127
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Holy Macarena, that opens up a whole new litany of data. However, although making sizes and applications proprietary (i.e.: consumable and irreplaceable) keeps your product line moving, it's almost impossible to maintain without leaks. Especially with increasingly competing platforms. But someone with database exp........ holy crap... I just had an idea... more later...

Anyway, there are probably in excess of a thousand different vehicle models out there from different years which will have some interchangeable parts but different part numbers. I'd expect Dodge to avoid making directly interchangeable parts from many modesl because there's more money in selling new parts than the secondary market. Maybe, though. I'd be interested in knowing that.

Enjoy the turkey!!!!
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Old 11-23-2012, 05:38 PM   #128
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Btw rather than going to the trouble of scouring Craigslist and waiting, you can buy 52126319AC for about $50 apiece from Mopar. Even new, they're cheap.
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Old 11-24-2012, 06:40 AM   #129
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I just whant to fix the rake in my tj, going to try this just need an in, or so. Time to hit Cl. Thanks
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Old 11-24-2012, 07:36 PM   #130
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So if stock JK suspension adds 3" of lift would rubicon suspension off a JK give you 5" of lift? Just curious...
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Old 11-24-2012, 07:47 PM   #131
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Quote:
Originally Posted by Jtaylor1129
So if stock JK suspension adds 3" of lift would rubicon suspension off a JK give you 5" of lift? Just curious...
The springs on the JK have different ratings, you're most likely going to get the "best" one by getting the springs from a JK unlimited, I think the numbers you want for the most lift are the springs ending in 19/59
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Old 11-24-2012, 08:15 PM   #132
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Im betting a 19/57 is going to be the best bet for a level lift. You just have to be really careful when heating up the rear coil to fit the bumpstop cup. Let them cool slowly and use just enuff heat to open it
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Old 11-24-2012, 08:45 PM   #133
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Quote:
Originally Posted by 2004_Silver_Sport
I just removed my stock TJ springs and 2" BB and installed JKUR springs up front thinking I'd get 3" of lift like the OP and I actually lost about an inch and a half.

Before with stock TJ springs and 2" BB

After with the JKUR springs with the last 2 numbers being 18.
What size tire r u running?
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Old 11-24-2012, 09:59 PM   #134
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Quote:
Originally Posted by eagle223

The springs on the JK have different ratings, you're most likely going to get the "best" one by getting the springs from a JK unlimited, I think the numbers you want for the most lift are the springs ending in 19/59
Thanks. I was just curious about it. Not looking to do it, I already have a 6" lift on my jeep.
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Old 11-25-2012, 10:59 AM   #135
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Quote:
Originally Posted by Jtaylor1129 View Post
So if stock JK suspension adds 3" of lift would rubicon suspension off a JK give you 5" of lift? Just curious...

I think 3" inches is all you'll get no matter which springs you use, and depending upon your engine and hardware (winches, bumpers, etc.), maybe a little less, especially in the front. From what I'm seeing, there doesn't seem to be as much variation between the rear PNs, in terms of their effect on a TJ. That's pretty consistent.

It's the front that you have to work with. I'd say in almost every case, some additional coil spacers (additional to the factory ones) will be needed to level things out.
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Old 11-25-2012, 11:14 AM   #136
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I've been reading these posts and the idea of pulling my BB is tempting. My only question is, with these stiffer springs, how is the ride and do they still flex well?
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Old 11-25-2012, 11:24 AM   #137
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Jeepsrgreat, I don't think you could beat the ride. That was the whole point for my trying this and I am still blown away every time I drive my jeep. I live on a street which has an absurd number of speedbumps, and now I barely feel them.
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Old 11-25-2012, 12:04 PM   #138
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Thanks
Does anyone know how these compare to the ZJ swap? I understand the fronts are interchangeable with our TJs as well for 3". Or Crown Victoria springs for the rear. It's all starting to remind me of Mr. Potato Head.
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Old 11-25-2012, 01:46 PM   #139
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Quote:
Originally Posted by Jtaylor1129 View Post
So if stock JK suspension adds 3" of lift would rubicon suspension off a JK give you 5" of lift? Just curious...
I have a buddy with a JKU Rubicon that had soft springs in front and stiff in rear so really there is no such thing as a "Rubicon" spring.

Quote:
Originally Posted by eagle223 View Post
The springs on the JK have different ratings, you're most likely going to get the "best" one by getting the springs from a JK unlimited, I think the numbers you want for the most lift are the springs ending in 19/59
The springs on JKs and JKUs are for the most part random. The ONLY thing you are concerned with is the number on the tag. The higher the number the stiffer the spring and the more lift (or less sag) you will get. You are correct about the numbers, 19/59 are the stiffest. The last 2 digits give the stiffness, after those numbers are 2 letters, I'm not sure what they are for.
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Old 11-29-2012, 01:45 PM   #140
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alright so ive been reading through this thread, i already have a 3" lift and i want to change my shocks. using JUST jk shocks with my current set up would work right.
i got lost some where along the way in reading all of this. again all i want to do is replace my current shocks with jk ones (because i need new ones and these are much cheaper than replacement ones)
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Old 11-29-2012, 02:08 PM   #141
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Not interested in lifting only improving ride quality.

riding on 31" bfg at now with completly stock 99 TJ sport

What springs and shocks should I look for???

Great ideas guys
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Old 11-30-2012, 09:42 AM   #142
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alright so ive been reading through this thread, i already have a 3" lift and i want to change my shocks. using JUST jk shocks with my current set up would work right.
i got lost some where along the way in reading all of this. again all i want to do is replace my current shocks with jk ones (because i need new ones and these are much cheaper than replacement ones)
If you have a 3" total increase over stock, I'd say that's a definite yes.

As for me concerning straight ride quality over a stock TJ Sport, I couldn't tell you for certain, but if it were me, I'd try it for the following reasons: they're so cheap they're almost free, so if it's not any better, you don't lose much, but they're re-salable on CL, so you shouldn't lose anything. In fact, you could actually make a few $ on the deal. Finally, switching them out is incredibly easy. With a floor jack, jackstands, and an impact wrench, you can switch them out in 20 minutes, a little longer with a ratchet. (that's after you mod them re: previous post, which probably takes about another 20 minutes if you're drinking beer...)
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Old 11-30-2012, 09:56 AM   #143
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Originally Posted by Bucktaker View Post
Not interested in lifting only improving ride quality.

riding on 31" bfg at now with completly stock 99 TJ sport

What springs and shocks should I look for???

Great ideas guys
I would note, however, that you could potentially bottom them out if you have no lift at all. There are some unknown factors (regarding your post, vehicle, and specific characteristics of these shocks.) which don't tell us what you'd need to know to be sure, but I kind of doubt it.

However, you don't know me from Adam, and I could be a cocktail waitress in Gdansk for all you know, lol, so take my opinion for what you paid for it. : )
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Old 11-30-2012, 10:19 AM   #144
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Another note regarding JK springs on TJs;

From what I see so far, I've found no comments about varying resulting heights in the rear from varying numbers. Every post (unless I missed something) I've seen both here and elsewhere on the Net has mentioned variation in the front ride-height. This is also consistent with my experience, and out of curiosity, I have installed two different sets of JK springs on the front. I should also note that aside from the automatic transmission (which I wouldn't trade for anything.), I drive the lightest TJ you can get; trimmed, stripped-down, bone-stock 4cyl, no AC., so my vehicle would yield the most front lift. (I have the hard top and full doors, but rarely use either of them.) I have JK 18s on the front (59s on the rear) and to be perfectly level, I will need spacers.

I agree with eagle 223 and photomatt, for the most front lift, you need 19s, period. I'm not sure the rear part numbers matter, much, but the front number definitely does.

However, I'm so pleased with the ride that I'm willing to put some more time into tuning the front to get it just like I want it.
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Old 11-30-2012, 07:12 PM   #145
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I would note, however, that you could potentially bottom them out if you have no lift at all. There are some unknown factors (regarding your post, vehicle, and specific characteristics of these shocks.) which don't tell us what you'd need to know to be sure, but I kind of doubt it.

However, you don't know me from Adam, and I could be a cocktail waitress in Gdansk for all you know, lol, so take my opinion for what you paid for it. : )
Yep Dont really understand what I left out

Bone Stock 1999 TJ Sport 4.0 5 speed Hardtop, AC with 31" bfg at's

Reading this thread it seems two possible bennies to the jk shock/coil swap Lift and ride

For me its all about the ride.....will the jk coils and shocks offer any ride improvement? or enough to even mess with this??

Any one else experience ride improvements after this swap.
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Old 12-01-2012, 12:04 AM   #146
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Sorry, you didn't miss anything, what I meant was there would be some changes in geometry between the two vehicles of which I'm unaware, basically the travel and ride-height of a TJ vs the JK they come off of. If you're closer to bottoming the shock out because the zone within the shock where the jeep rides is less than the middle because it's designed for a longer throw. (Range)

But if you're thinking of both shocks and springs, you wouldn't have that to worry about.
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Old 12-11-2012, 11:38 AM   #147
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This is great info. I was considering the ZJ springs on the front and just saw some KJ ones on the web for sale so decided to GOOGLE this as a potential swap. Nice Writeups and conversation.
I read through the entire thing, and from what I retained I don't think I saw where anyone actually put them on a 4.0l with AC, Winch, and plate. If anyone has, I'd be interested in your results.

This is what I have:
*97 Sahara, 4.0L, AC, Full hard doors and hard top (which I remove in the summer)
*No lift, no current mods other than 31x10.5-15" tires.
*Will install a winch plate and winch that total about 105 pounds
*Front is currently about 3/4" lower than rear without the winch - I stacked 100 pounds of weight on the front bumper and it dropped about 5/8"

What I really want is about 1.5" final front lift with the winch installed from where it sits right now without the winch. So, I hope for about 2-2.5" in the front with that 4.0L. What I don't know, is what does all of my extra weigh add to the equation? I think from what I read, Bucktaker is the only one with (or close to) that setup (without the winch) and he is hoping for no lift at all.

I'm hoping I missed one in there somewhere that can tell me if I'm on target for 2-2.5 with my setup. I'm really only looking at the front, as if it goes 3" in the rear that's too high. I'll just spacer the rear to level it out. I just don't want to go through all of this if there is no chance I'll lift it at all.

Thanks for the help.
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Old 12-11-2012, 01:53 PM   #148
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Just found these on CL and am making plans on picking them up on Thursday! The only problem is I don't have a way to heat the rear coils to make them fit. Any suggestions??

2012 jeep wrangler unlimited stock springs
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Old 12-11-2012, 05:29 PM   #149
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Will these JKU springs make a difference?

Double post, sorry.
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Old 12-24-2012, 11:19 AM   #150
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Will the control arms bolt right up or use tj ones or aftermsrket ones?

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