XK Springs to lift or increase loads in WK??

As i looked at the parts from my XK compiling on my shelf, I wondered.... I have an XK with the 5.7L, tow package and 3rd row seats; So my vehicle probably came with the stiffest springs available for the XK/WK lineup.

Took a look at the parts manual and sure enough, there's a bunch of springs listed:

FRONT:
52124199AB [ZDB,ZSB]
52124200AB [ZDC,ZSC]
52124201AB [ZDD,ZSD]
52124202AB [ZDE,ZSE]
52124203AB [ZDF,ZSF]
52124204AB [ZDG,ZSG]
52124205AB [ZDH,ZSH]
52124206AB [ZDJ,ZSJ]

REAR:
52124209AA [ZBR,ZPR]
52124210AA [ZBS,ZPS]
52124211AA [ZBT,ZPT]
52124213AA [ZBV,ZPV]
52124214AA [ZBW,ZPW]
52124215AA [ZBX,ZPX]
52124216AA [ZBY,ZPY]
52124212AA [ZBU,ZPU]

I'm not sure what those codes mean yet.... but it begs the question.

For example, i'd guess that my vehicle has the stiffest springs and a 3.7L WK w/o tow package has the softest springs...

So I wonder, say someone with a 3.7L WK wanted a small lift, like 1"... If my springs would accomplish that, they'd definitely be worth a look considering there would also be absolutely no issues with warranty (i doubt a tech will be able to tell the difference in the springs).

Hell, if anyone with a 2005/2006 (or even newer) is interested, I have my struts/springs still completely assembled in my garage... they only have 35k miles on them so they'd make good replacements on the cheap for someone running 100k+ miles https://theultimatejeep.com/notfound.png

Well it just so happens that I have an 05 WK with 97K miles, 3.7L w/o the tow package. All suspension components are stock to my knowledge. I might be interested if we looked into it a bit more. I don't know to much about it, as I've never had a lifted vehicle. The only thing I've got on mine now are the 1/2 inch leveling spacers in the front.

Jersey isnt a far drive from NY. you going to the Vineyard?

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Originally Posted by ItsMeKO3

Well it just so happens that I have an 05 WK with 97K miles, 3.7L w/o the tow package. All suspension components are stock to my knowledge. I might be interested if we looked into it a bit more. I don't know to much about it, as I've never had a lifted vehicle. The only thing I've got on mine now are the 1/2 inch leveling spacers in the front.

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If we can somehow find the spring rates of your stock springs vs my springs, we could estimate the amount of lift you would get....

This sounds like an interesting thread. I'll definitely be watching and wondering what will happen.

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Originally Posted by CmmdrDan

Jersey isnt a far drive from NY. you going to the Vineyard?

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I'm not sure. I'd like to but haven't decided for sure or not. The wine tasting might be a good excuse to get my girlfriend om board lol

Quote:

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Originally Posted by Matt

If we can somehow find the spring rates of your stock springs vs my springs, we could estimate the amount of lift you would get....

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That'd be awesome, any idea how to go about finding that info? I'll try to search online a bit.

In this day and age, anything's possible. Let me see what i can find :)

I talked to my bro in law, and the parts manager at their shop doesn't have the spring rates on the stock springs but he says it makes sense because the front of the XK is like 600lbs heavier than the WK. I'm still looking around online to see if I can find the rates.

I've been trying to see if I could find the spring rates in the descriptions on mopar parts sites... Normally they're described as "600 lb" or something which is just a standard measure at a certain deflection. For instance a 500lb spring would have a lower spring rate than a 600lb spring.

Where are you in NY? If you're interested in the setup, it may be worth just trying them out; especially is you could use new struts to start with :)

Edit: but you better start spraying those lower fork bolts with PB Blaster now!! lol

Hahah I'm interested. I'm not sure if I need them, but they have never been replaced to my knowledge, and my clocks at 97xxx right now, so it couldn't hurt lol. I'm way upstate NY though, in Canton. It's about 2 hours north of Syracuse lol

Wow... you're over 7 hours away; the gas alone wouldn't be worth it, you could order brand new springs :(

Hahah yea.. thats true.

I have been wondering something similar. I have the 3.7 and want to get a little stiffer spring. I have the RR lift so I don't need the OME springs that give more of a lift. Any ideas on what springs and where to get them?

You can order the springs from any mopar parts suppliers.... the key is figuring out which ones are the best ones (like an overland with tow package )

What about the front struts ? Any idea on a direct replacement with a stiffer ride but no lift ( since we all a lift already ) ?

You could get the OME or Bilstein struts.

The Bilsteins struts don't actually lift the front do they? Only the OME do that right?

No neither strut should lift anything. The springs do that. They will increase the stiffness only. (Unless you buy some type of leveling struts i suppose) The OME struts are just stiffer and longer(when extended) for the extra 2 inches gained with the ome lift.

Correct, neither strut will provide any lift.

Also, the OME struts are NOT significantly longer; they're just about 3/8" longer (a little less) when fully extended, so 3/4" (max) more down travel at the wheel... not 2".

Here's the comparison pic I took while doing my install. I made sure the bottom of the struts were also lined up where they mount to the fork.

https://theultimatejeep.com/images/i...14161826-1.jpg

I think the OME struts are a good replacement for stock.

Edit: actually, and 3/8" is an over-estimate... it's actually 2.5/8 (5/16).. but that's splitting hairs

Yep what i thought about the strut not lifting. I just assumed they included 2 inches extra travel.

i thought i read on JU or maybe it was JG that the addition of XK coils to the rear of a WK would give it maybe an 1/2" or an 1" of lift. as for the front i think it wouldnt do much, pending what motor you had. i think when i was looking for a little boost i was going to do XK coils f/r with a rustys leveling kit for around 1" of lift front and rear.

bump, matt you still have your rear xk coils? price?

also if anyone is interested, i have prices and part numbers from justforjeeps.com for the rear xk coils for a hemi/tow pkg equipped xk and the front wk coils for a crd.

What's the part number for the hemi tow package equipped Xk rear springs?

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Originally Posted by Matt

What's the part number for the hemi tow package equipped Xk rear springs?

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52124214AB, 52124213AB rears- xk
52089765AE, 52089763AB fronts- crd

Ah, those are the 2010 part numbers.

Why two different parts? They're not unique to driver vs passenger side....

Hows $100 for my rear set sound?

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Originally Posted by Matt

Ah, those are the 2010 part numbers.

Why two different parts? They're not unique to driver vs passenger side....

Hows $100 for my rear set sound?

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how many miles on yours? i think ones stiffer or something- def side specific (right term?), has to do with where the weight of the vehicles displaced when you accelerate, like the torques transferred to that side or something. same with rear coils in a TJ.

Around 35k miles.

The parts manual doesn't distinguish left vs right spring. And if you look up those part numbers on mopar supplier sites they're both listed as "either side".

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Originally Posted by Matt

Around 35k miles.

The parts manual doesn't distinguish left vs right spring. And if you look up those part numbers on mopar supplier sites they're both listed as "either side".

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interesting... on the invoice theyre listed as left and right with 2 seperate part numbers.

Maybe the 2010 parts manual lists them like that .. I just downloaded the 2007 version.

Old Man Emu has side specific coils. So im sure the OEM coils are side specific. Theres more weight on the drivers side due to the gas tank and driver of the vehicle.

Were your OME coils side specific? Mine weren't... ordered the front from kolak and rears from JBA. Both sets were two of the same exact part number.

My OME coils for the rear were side specific. There was an A and B labeled spring (although no directions included in the box). One coil was ~1cm taller (I believe this was the A spring) and goes on the drivers side.

Interesting.

Mine were identical... no A or B on the tags, just the part numbers that are listed in ARB's application guide:
http://www.arbusa.com/uploads/PDF/ac...ommanderXK.pdf

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Originally Posted by Matt

Were your OME coils side specific? Mine weren't... ordered the front from kolak and rears from JBA. Both sets were two of the same exact part number.

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I ordered my OME Lift from OK4WD out of PA but the parts were shipped from a warehouse in WA. They were definately side specific labeled with an A and B tagged on the coil itself.

How long ago did you guys do your lifts? I wonder if they've consolidated their springs since then? I only did mine a few months ago.

I replaced mine around April of this year and ordered them from Rocky Road. I actually measured the 2 springs and the A spring is ~1cm taller.

This was from ARB when I emailed them regarding A and B springs:



Jason-

Some of the OME spring sets have “A” and “B” designations. The 2993 coils fall into this category. These designations show there is a 10mm height difference in the two springs. That difference in height is to aid you in fighting vehicle lean.



We suggest measuring your vehicle as it is now, and figuring if you have a low or high side. This info will help you find the best placement for the springs. In most applications where both front and rear springs are of the A/B style, we suggest staggering them so you do not have both taller springs on one side (front and rear), and low springs on the other.



Hope this info helps, please let us know if you have any other questions.



Matt Glass

ARB USA

Tech and Marketing Assistant

I wish I wasn't so OCD..... my vehicle doesn't lean so this shouldn't bother me, but I'm wondering why my springs weren't tagged A/B......

Some day when I pull out my rear springs (ie to install spacers or something) ill have to measure them to see if they're different. I did have them sitting side-by-side on my tool box and I usually notice differences like that. But who knows...

A difference in 10mm isnt really that noticable to the eye. Both of mine looked the exact same height until I measured them.

10mm = .39 inches.

That's within my "hey they're different" naked eye resolution. Lol

Edit: you must need glasses if you can't see almost 1/2" difference in parts. :p