SOA spring options - JeepForum.com

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post #1 of 46 Old 05-11-2017, 10:16 PM Thread Starter
Randonexplosion
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SOA spring options

After going SOA up front on stock YJ rear springs I am finally happy with the ride, and even more so with the off-road performance. That is until I destroyed them in Moab last week. I am looking for something with the same spring rate (or close) but more durable. I have read thread after thread of people asking the same question, but never much of a resolution or specifics. The most common suggestion is the Full Traction 0" lift springs, that haven't been available for a few years near as I can tell.

Next are Waggy springs but they add some lift and stretch over stock YJ springs, neither of which I can fit or want.

Then there are the RE Reverse Eye SOA packs, but they give 1.5" of lift.

Another option is another set of YJ springs with an added main. The consensus seems to be that they stay nice and soft but can take a beating. Exactly what I need except for the availability locally and the expense of shipping 100 lbs of springs.

A 5th option is a set of Crown replacement springs (with a main added when I can). The problem is figuring out which ones to run. After reading some reviews of the fronts, there seems to be a Standard and HD set, with quite the difference in spring rates. Here is a snip of a review on Amazon

”For anyone wondering, the Heavy Duty front spring pack is slightly thicker than the Standard Duty front pack giving it a higher spring rate which may increase the load capacity slightly. According to Crown Automotive, both are 4-leaves, same length and width but the Standard Duty is 1.05" thick with a spring rate of 139# and the Heavy Duty is 1.25" thick with a spring rate of 272#."

The Crowns are appealing as they are fairly cheap and are available on Amazon Prime.

Does anyone have any experience with them? Or any other spring packs? I definitely don't want to stiffen up the ride.

There are always custom springs like Alcans, but I'd like to keep the investment minimal, as leaf springs are only temporarily until I move on to bigger and better things...







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post #2 of 46 Old 05-12-2017, 05:52 AM
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Zoiks, Nice job on those springs...

I started to bend my Omix-ADA springs just flexing the jeep in the garage.... warranty covered though...

I added a second main to my 5 leaf pack...running them all corners...

Still soft and flexy, the added leaf did ad about an 1" of lift but springs are still pretty new so I imaging they'll settle back in /down...

Local spring shop charged me $100 to make 4 extra mains... Brought them a new spring set for reference and they maid the new extra main and added it to the pack... I did the remaining three on my own...

I agree, go 5 leaf Crowns and get an extra main main
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post #3 of 46 Old 05-12-2017, 07:02 AM
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Rand, I'm one of the guys that just went with RE. They are fine, hold the Jeep up and all, but I'm curious where this discussion goes.

NH, those retainer clamps look pretty tight, won't let the leafs relax very well on droop.

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post #4 of 46 Old 05-12-2017, 09:30 AM
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Wow, that's bent!

I don't know on stock length springs since I went the other way, but keep in mind adding leaves SOA = added height so if you add a couple or three springs you may as well just do the RE SOA springs. I think with my fronts I'm two or maybe three springs shy of a complete second pack in there.

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post #5 of 46 Old 05-12-2017, 09:56 AM
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What about a front traction bar? Won't change the spring rate but will stop the "wrap" from happening.
Bad part is finding space for it.

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post #6 of 46 Old 05-12-2017, 10:07 AM
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I have been running the Crown HD Rears (6 leafs) all the way around. They have done great for me. They have been on many of wheeling trips. They are soft and stable. The springs have an ever so slight negative arch, but they have pretty much had that since day 1. Cant beat them for the price. I can post pics if you want any.

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post #7 of 46 Old 05-12-2017, 03:18 PM
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Quote:
Originally Posted by JeeperDon View Post

NH, those retainer clamps look pretty tight, won't let the leafs relax very well on droop.
They do droop, there's enough axle weight. The clamps may need to be clearanced a bit, Need to give them a good work out still.

RAND, Wow, I didn't really notice the 2nd pic earlier. springs look bent thru 4 of the 5 leafs... Not sure what would prevent that in the future

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post #8 of 46 Old 05-12-2017, 06:55 PM
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Was this an unusual circumstance?
Hit something at speed?
When I look at them, I can see something like that happening... hitting a hole while under full (panic) braking.

If so, shiat happens.

There are inherent risks with soft springs.
That's why... they're soft.

Now for my theory.
I think the reason spring manufactures make YJ springs so stiff, they are trying to avoid bent springs.
YJ springs need to not only support weight, but they also locate the axle.
Need a certain amount of strength to keep the axles where they are.

I might be wrong. Or not?

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post #9 of 46 Old 05-12-2017, 11:06 PM Thread Starter
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Thanks for the input guys. It sounds like I'm gonna look into the Crown packs a little further.
@87TPIYJ so yours are the HD heavy spring rate, but they still feel plenty soft?
@bobracing an anti-wrap bar could help, but you're right, no room with my drivetrain in there. I also don't really want to weld anything else in there unless they are link brackets
@JeeperDon is there any chance you have a pic of the spring mounted?
@Chrisnvegas you caught me. I was definitely hauling *** through the sand and hit a hole under hard braking. But if you break it while driving like an *******, then you didn't build it tough enough, right? :Cheers2:


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post #10 of 46 Old 05-12-2017, 11:19 PM
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I run Alcan stock height springs. I had them custom made. Call them and they will ask you a series of questions about what you do with the Jeep, how much weight is on it etc. I paid around $850 for them and are the best springs I've ever run.

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post #11 of 46 Old 05-12-2017, 11:28 PM Thread Starter
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@ionakana $850 for all 4? That's not so bad...

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post #12 of 46 Old 05-13-2017, 12:16 AM
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Agreed. You should be able to get rowdy in the sand.
Build stronger!
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post #13 of 46 Old 05-15-2017, 05:33 AM
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Quote:
Originally Posted by Randonexplosion View Post
Thanks for the input guys. It sounds like I'm gonna look into the Crown packs a little further.
@87TPIYJ so yours are the HD heavy spring rate, but they still feel plenty soft?
Yes, They ride great. Especially once I replaced my old blown shocks with new Bilsteins. Without going to ALCAN's or having a really weak leaf pack, I don't really see it getting much softer than it is.
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post #14 of 46 Old 05-15-2017, 05:41 AM
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They flex well too. Even with my up travel limited.



Brake line being too short was limiting factor in this picture.
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post #15 of 46 Old 05-15-2017, 06:37 AM
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Quote:
Originally Posted by 87TPIYJ View Post
...Even with my up travel limited...
I had to do that too, fab up some taller metal bump stop towers above the axle u-bolt plate. I just get a bit tire-lug-on-fender-flare flutter when stuffed. I always forget to mention bump stop work when these 'how to SOA' threads appear.
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