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Old 06-19-2012, 09:16 PM   #91
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If i want to just put some springs and shocks into my tj from a jk it should still be possible without removing my other lift parts? like one of the posts said, running 2.5 lift and factory wheels is a rough ride. I want to just change the springs and shocks to the heavy duty ones for some more comfort, i have shock relocation mounts already installed. hope that makes sense...

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Old 06-25-2012, 08:25 PM   #92
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Got a set of 14/55 springs off of my '11 JK sport for free if someone wants them, PM me if interested.

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Old 07-13-2012, 04:17 PM   #93
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So...I'm still confused. The OP got 3 inches of lift and everyone else lost an inch?
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Old 07-13-2012, 05:25 PM   #94
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OP said old used up 2.5 springs. New ones were out of a V6 JKU. No one has tried it on a 2.5 yet. Also bumper and winch weight may play into the difference. I did not see the pictures so I don't know if he has a huge Warn 15,000 and a homemade bumper out of railroad tracks or is it the stock bumper. Big weight difference between a stock 2.5 and a 300 lb fatter 4.0 with stuff on the front. I know Silver Sport is stock but is he a 4.0?
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Old 07-16-2012, 06:49 PM   #95
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I am about to try this on my 2000 Sahara. Anyone know if the springs end up being too stiff?
Here are the doner springs.
Jk jeep wrangler factory suspension
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Old 07-16-2012, 10:11 PM   #96
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How about these 2007 2 door JK springs for my 2000 Sahara?
Front spring measures 17" but spring material appears heavier.
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Old 07-17-2012, 09:10 AM   #97
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3 inch lift

I just picked up a complete lift for a 07 wrangler , are the control arms the same as a 03 wrangler? This kit is a 4 inch lift complete with control arms and shocks, springs, break lines and bumb stops ... The hole kit for 250.
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Old 07-17-2012, 09:56 AM   #98
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Originally Posted by Opposedodie
I just picked up a complete lift for a 07 wrangler , are the control arms the same as a 03 wrangler? This kit is a 4 inch lift complete with control arms and shocks, springs, break lines and bumb stops ... The hole kit for 250.
No, not at all. The 07 is a a JK and your 03 is a TJ. Pretty significant changes between the two.
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Old 07-23-2012, 02:22 PM   #99
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will have my JK springs and what not this weekend, going under the TJ soon after.
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Old 07-24-2012, 12:25 AM   #100
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These are supposedly off a '07 Sport.
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Old 07-24-2012, 08:12 AM   #101
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My 04 is bone stock as far as bumpers and engine. No winch. Soft top. Literally as light as a 4.0/Auto can be. "17" springs on front lost height. At best, he was running the stiffest possible "19" springs and has a 2.5, which, as stated, is significantly lighter than a 4.0.

If you're going to do it don't waste time with anything less than a "19" front spring.
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Old 09-11-2012, 10:37 PM   #102
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So i put '07 saraha front and rear springs on my '00 (2.5 SE). I mite have gained a inch in the front but now the rear is way higher. All the shocks were converted and fit. Is this normal or did i install something wrong. Would i be better off getting rubicon jk springs to level things out?
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Old 09-11-2012, 11:03 PM   #103
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No such thing as "Rubicon" springs. You have to look at the numbers on the springs if they still have the tags. The higher the number the stiffer they are. I personally don't think there is any rhyme or reason to what springs come on what vehicle, a 19/60 combo is the stiffest (last 2 digits of the front and rear).
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Old 09-11-2012, 11:26 PM   #104
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I guess what i ment is if the springs come off a rubicon jk rather than a saraha or sport
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Old 11-21-2012, 11:51 AM   #105
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Gotta tell somebody about this... really happy with the result.

Hi folks. I haven't posted here for a while, and not much at all, really, but I thought I might add to this sort of evolving experiment.

My jeep is a daily driver/work truck/marketing tool during the week, light expeditionary off-roader some weekends. I don't rock climb, etc. I respect it, but it's just not my thing.

I've been turning wrenches since I turned 15 in '78, and have spent a lot of time in salvage yards pirating parts. Do that long enough and you start to recognize patterns. I call it "cross-pollenation"; where a part is used on several different cars, even different manufacturers, but with different part numbers. I remember being physically stunned to realize that a certain steering rack fit both a Ford and a Mercedes Benz product. That's not specifically relevant to this discussion necessarily, but it was my motivation for doing a search for coil springs of different lengths and load characteristics, which surprisingly led me back to this forum and thread. I was expecting to find that maybe a light truck of some sort, Toyota or maybe Ranger or Explorer coils may be workable. I do a little fabricating, and am not into paying retail. But I wasn't expecting this revelation about JK parts.

Very, very cool.

So after reading this thread, I immediately hit Craigslist and Ebay. I now have JK 17s on the front of my TJ, and 59s on the rear, with no-miles take-off shocks from an '08 JK Sahara. I am blown away by the ride and handling characteristics. I cannot recommend this mod enough. I don't think you can top this with new Bilsteins.

Here's a little bit of the sequence of events which led to me to where I am now. I did some experimenting to determine what I was going to be the most satisfied with, to arrive at this conclusion.

My Jeep is a trimmed-down 2.5L auto SE. (No rear flares, trimmed front fenders and flares.) 31s. Custom exhaust to help the 2.5 breathe which, surprisingly, helped considerably. I have both the hard top and doors but almost never use them. Haze-gray-and-underway paint ( "Battleship gray", "Haze gray"... otherwise known as New Ford Gray at Autozone...). Removed Sahara aluminum wheels, replaced with dodge police steelies. Painted gray.

So, I knew I wanted a lift, but wasn't sure how much, so I bought some skateboard wheels, shaved them to 1.5 inches, bought some grade 8 bolts and thus lifted the tub. I liked it, so I left it that way, but it wasn't enough.

I started looking a kits but knowing what parts actually cost to produce, there was no freakin way I was going to pay $1500 for snazzy paint and stickers. After making budget-boosts of various heights out of scrap steel I had lying around, I decided on 3". The height is fine, and I wouldn't have to modify much else. There was no way I was staying with the blocks. Dude, preloading springs is no joke. Bone-jarring ride notwithstanding, (The softest part of the spring-load is basically negated by the blocks... FYI...) it can make a short-wheelbase vehicle like a light jeep an absolute projectile at highways speeds. You can actually hear the aft end get airborne at times. Not cool...

Anyway, short story already too long, there really aren't any mods needed to the rear springs to make them fit. The bump-stop cups fit perfectly within the upper coil if you use bump-stop extensions, which you need to do anyway. Take an angle-grinder (you can get a cheap one for $30 at harbor freight, but DeWalt has a nice one for a hundred bucks and trust me, you'll use it...) and trim the rear shock bushings to 35mm. Easier than trying to widen that shock mount.

I definitely agree with those whom have said to go with 19s for the fronts of most people's rigs. I am choosing to stay with the 17s though I lost about an inch from the 3" blocks, but for me the ride and handling characteristics are far worth it. I'm adding a 1" rubber BB to compensate, and I don't expect that to impact the ride much. (I'll update this post if so.) So far, I have a 2" lift in front, 3" in the rear, yet the ride is better than stock. Far better.

Total cash: Coils $40, shocks $20, all four. I got a better than average deal on the shocks (I bought some other stuff from the guy) but I see them every day for $40-60 for springs and the same $ for shocks, but often around $75 bucks for everything.

Oh- as mentioned before somewhere, you need to press out the metal collars from the bushings in the front shocks, but you can use a small vise, pressing the bushing out between a short section of 1" pipe and a 2"x1/2" bolt with a nut turned about 1/2" down it. (A 2" section of 1/2" drive extension works as well.) PB Blaster it and torque away. Then PB the mounts from your old shocks and just twist them out with vise grips, and shove them in the JK shock bottoms.

I'm including ride height comparison pictures so you can see what to expect. I haven't added the rubber BBs yet so the last pic is as it is now. I don't care enough to do the other part yet, but eventually it'll bug me enough to where I'll take care of it and I'll post an update then.


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Old 11-21-2012, 12:24 PM   #106
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Nice post man. It's good to see solid evidence for how well the JK springs and shockss work.
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Old 11-21-2012, 12:36 PM   #107
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Would I need JK shocks. Or could I just use TJ shocks that compensate for the lift. Also. What kind of height could I expect from JK springs with a bone stock set up. No body lift. I'm interested on just swaping springs and shocks. Would that be do able?
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Old 11-21-2012, 01:36 PM   #108
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Originally Posted by Slater451 View Post
Would I need JK shocks. Or could I just use TJ shocks that compensate for the lift. Also. What kind of height could I expect from JK springs with a bone stock set up. No body lift. I'm interested on just swaping springs and shocks. Would that be do able?
If I understood the above post correctly you would net around 2 inches with the correct springs. You don't need new shocks but for the cheap price you should get them. The stock shocks will leave you with little droop left in your shock.
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Old 11-21-2012, 01:38 PM   #109
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Ok thanks. I'll keep an eye out for some JK springs then!!
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Old 11-21-2012, 03:08 PM   #110
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Thanks Golden Sahara!

Slater, I'm glad you mentioned that. I wanted to include another part of the experiment. At first, I kept stock-length TJ shocks. (The JK shocks truly are much longer) I had the springs but hadn't found shocks that I wanted yet.

(Some JK owners try to sell them for like a hundred bucks and over for their takeoffs. You might have to wait like a week, but stay on CL. There are so many of the dang things out there I'll bet you don't wait five days before you find a set for less than $50. Slightly more on Ebay, but you access the national supply and they'll ship them.)

The stock TJ shocks are just no match for this height. Hit a speed bump at over 30 mph and you'd swear you were just air-dropped. Ha ha, that just reminded me- I was driving this actress somewhere while I was still playing around with setiups. I had on BBs and short, stock TJ shocks and at the last second as we were about to hit a speedbump I said "Lean forward". She just turned and said "What?" about that time the seat hit her in the back and almost threw her onto the hood. Lol, she was fine, but by God, she's a little more alert now.

Anyway, so yeah, go with the JK shocks. It's likely that they're made by one of the major shock absorber companies anyway.

In fact, I haven't tried it but might just for experiment's sake, I think if you just went with poly BBs and JK shocks, the ride would certainly be improved over BBs and short shocks. Well, obviously, but it bears stating for those who haven't spent a lot of time underneath vehicles. But honestly, it's almost like you can three inches of lift for virtually free.
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Old 11-21-2012, 03:16 PM   #111
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I'm really not looking to add a BB just the coils alone. Would they alone add so much lift that I would still need JK shocks. Not that I'm trying to cheap out I'm just wondering
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Old 11-21-2012, 03:19 PM   #112
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I've got a set of soft springs and shocks off my Sahara that I'm gonna put on CL. The springs are probably too soft but the shocks are good, 15k on them is the only thing. I think they still have a lot of life tho. PM me and make an offer, ill ship at your expense. The springs are 55 and 12/13 and they have about 10k less miles on them (around 5k)
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Old 11-21-2012, 06:54 PM   #113
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Thank you but I've got a bit more research to do about spring rates and what not! I think I would prefer a stiffer spring rate so I actually get a lift out of the swap. I'm afraid if I go too soft I'll be right back to the same ride height
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Old 11-21-2012, 11:01 PM   #114
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Well I'd definitely recommend getting the shocks as well. When I had only the springs with the stock, short Tj shocks, there was almost no, I meant almost zero distinction between that and the BB in terms of ride stiffness.

I'd definitely do shocks and springs. For less than the price of one Bilstein.
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Old 11-22-2012, 12:07 AM   #115
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Quote:
Originally Posted by Yep.
Thanks Golden Sahara!
<snip> honestly, it's almost like you can three inches of lift for virtually free.
Sounds like a nice way to get a decent little lift without spending a lot of cash. What else needs to be considered with 3" of lift (brake lines? SYE? Pitman drop? Etc.?)
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Old 11-22-2012, 12:34 AM   #116
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Originally Posted by geoffmarton

Sounds like a nice way to get a decent little lift without spending a lot of cash. What else needs to be considered with 3" of lift (brake lines? SYE? Pitman drop? Etc.?)
The same stuff you would with a normal 3 inch. Typically no sye needed. Never a pitman drop. Brake lines are probably still fine. But have to be checked. Relocated front track bar or adjustable. A track bar braket for the rear, and it adjustable. If vibes do occur a tcase drop or mml to fix until the purchase of sye/cv. Etc
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Old 11-22-2012, 04:06 AM   #117
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I have actually seen a TJ lifted like this. His jeep looked awesome and he said the ride was amazing. He put JKU Springs off a soft top. The hard top JKU's have a stiffer spring to compensate for the heavier hardtop. Also, if you find springs off a hardtop with tow package, it will be even stiffer and will probably provide another inch of lift in the rear. I know that 2dr JK guys like to put 4dr/hardtop/tow package springs on their jeeps to get an extra 1.5-2" of lift from stock for cheap.

I have 2 sets of JKU soft top springs available in the classified section. I'm located in Tampa, Fl if anyone would like to get a set.
I would be interested in those im in sebastian and have a 2dr tj 2.5l those would work great if you still have them
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Old 11-22-2012, 06:47 AM   #118
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i have an 02 2.5 with a 2.5 in lift already would i net a loss or gain from switching to the jk springs 19/60 respectively?
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Old 11-22-2012, 07:57 AM   #119
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Ok, a disclaimer first because there are a LOT of variables between rigs, but assuming the key things are consistent, I would ****estimate**** that you would probably see about a half inch rise in the rear, maybe a tad more, and either little change in the front or ****possibly**** a small increase. I'm putting all the asterisks because I'm answering this on my iPhone so no italics available, and I want to emphasize that I'm trying to give you my best estimate, but an estimate, it is. I would support this expectation however by saying that this is what I experienced, and I'm only using 17s.

A salient note- at one point when I had my springs off I compared several heights against one another. (I got curious early on and there are buckets of JK takeoffs where I live that are so cheap they're almost free, so I bought several part #s for comparison.) I didn't photograph them, wish I had, I may actually remove mine and do that for the furtherance of science , but the differences were obvious. The 15, 16, and 17 increased in height and material diameter with the increase in part number. I'll put the TJ stock spring up there as well and take a pic soon.

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Old 11-22-2012, 08:44 AM   #120
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I had 16's on the front and 59's on the rear of my 200 (2.5 w/ soft top). I easily got ovr 3" in the rear lift. The 16's mayb only a 1/2 to 1" I switched ovr to 18's and got about 2-2 1/2". The main thing is the rear. I never tried softer rates. The stiffest front is an 19 but I could nevr find any in my area. Id definatly stick with the stock JK shocks whatever 2-3" lift. I put 3" BB with the JKshocks and 32's and I really like the ride over stock. If I could have found what rear JK spring would level out the front I would have stayed with all JK suspension parts

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