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Unread 07-27-2014, 05:21 PM   #1
mtbiker
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JBA 4" rear springs

Who has them? What did you do in addition to them? How have they been?

I currently have OME HDs in the rear an want more, along w/ seeking to fix the drivers side sag. I bought extra isolators, but think that these springs may be a better option. Thoughts?

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Unread 07-27-2014, 09:50 PM   #2
huntb
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Well... how much do you like forward rake? And do you feel like buying an adjustable track bar? The JBA springs are top of the line. You cannot go wrong with them
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Unread 07-27-2014, 10:12 PM   #3
tommudd
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What he stated above, you'll more than likely get more lift than you want unless you like a one inch or more rake. With the " normal set up " you'll add one inch to a 2.5 inch spring creating a 3.5 inch lift, these will give another .5 t0 1 inch easy
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Unread 07-28-2014, 09:16 AM   #4
mtbiker
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I am usually loaded down pretty good. There is a hitch rack for bikes almost all of the time & riding gear in the back. I've had about 3/4" driver's lean since I lifted last July. Bought 5 isolators(planning on three additional drivers/two passenger) to add a little more lift & level. But after a trip to OBX in a more than likely overloaded Liberty, it seems to be even lower in the rear. Thought maybe the 4" springs might be the way to go.
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Unread 07-28-2014, 09:31 AM   #5
tommudd
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Longer/taller springs is not really the answer to hauling that much weight. For instance I haul about 75 lbs or more of tools, RL rear bumper with tire and 5 gallon gas hanging off of it, Kilby gas tank skid etc and springs alone would not hold it where I wanted it. I also haul either a 5X8 open or 6X10 enclosed trailer almost every weekend
Check out either air bags for the rear or the Sensatrac PN:58649
coilover shocks for carrying heavy loads ( works for lifted KJs/KKs )
How many miles are on your springs now?
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Unread 07-28-2014, 10:17 AM   #6
mtbiker
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10-15k miles. So I could just swap the sensatracs for my OME N132L shocks & be good? My passenger side shock has already puked oil all over the driveway. I am currently awaiting a warranty replacement. Maybe do the isos & sensa tracs for now & see where that leaves me. I may do some spacers in the front for another 1/2" or so. Not planning on doing arms anytime soon, so I'll prob hold off on adding the clevis too.


On a side note: ARB's customer service is pretty awesome! Sent in the warranty form on the 18th, new shock shipped 23rd!
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Unread 09-21-2014, 06:24 PM   #7
mtbiker
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Ok, took some measurements today. The passenger side sits @ 20.5" & the drivers @ a tic over 20". All I have done so far to the rear is the OME HD rear springs. I have 5 extra isos that I can use to level. I also bought some conduit nuts & spacers for a the front. Kinda been holding off on doing the front because I don't know when/if I'll get arms in the future. Guessing I'll try two isos on the drivers side & one on the passenger, maybe get a pair of the Monroe's to see how they do. I guess if I commit to the arms & install the spacers & nuts, I could go w/ the 4" springs out back instead.
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Unread 09-21-2014, 06:36 PM   #8
tommudd
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Quote:
Originally Posted by mtbiker View Post
Ok, took some measurements today. The passenger side sits @ 20.5" & the drivers @ a tic over 20". All I have done so far to the rear is the OME HD rear springs. I have 5 extra isos that I can use to level. I also bought some conduit nuts & spacers for a the front. Kinda been holding off on doing the front because I don't know when/if I'll get arms in the future. Guessing I'll try two isos on the drivers side & one on the passenger, maybe get a pair of the Monroe's to see how they do. I guess if I commit to the arms & install the spacers & nuts, I could go w/ the 4" springs out back instead.
Sounds like new springs are needed as well if you are only at 20.5, thats only about an inch of lift. Only add top isolators and the most you can add is two per side ( 3 total on top )
If you are not lifted in front any more than you are 4 inch springs are going to give too much lift
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Unread 09-21-2014, 06:38 PM   #9
mtbiker
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The springs are a only a little over a year old. They have maybe 15k miles on them. Did I get bad springs? I already had to have them replace a defective shock.

Just remeasured on flat ground, center of hub to bottom of wheelwell: drivers 20 1/4" passenger: 21"
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Unread 09-21-2014, 06:53 PM   #10
mtbiker
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My front is drivers: 20" passenger: 20 1/4"
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Unread 09-21-2014, 06:55 PM   #11
Bmxer524
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That puts the passenger side on 2" of lift, and the drivers on 1.25". So 3/4" of sag/lean...
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Unread 09-21-2014, 06:57 PM   #12
mtbiker
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So I guess I got some lame springs. How much will I get from an extra iso?
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Unread 09-21-2014, 07:04 PM   #13
Bmxer524
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1/2" per iso. If it makes you feel better, my rear sits at 21.5" both sides. I run 731s and 2 isos per side. I think I might have crushed 1 of them though...
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Unread 09-21-2014, 07:09 PM   #14
mtbiker
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Ok, thanks for the help! Both of you! I kinda figured things weren't right, wanted to give it time to settle after the install. Guess it's a good thing I didn't get those 245/75/16 DuraTracs!!!
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Unread 09-21-2014, 07:11 PM   #15
Bmxer524
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They fit in the rear no problems. It's the front that has issues because of turning, etc. They'd fit on yours lol.
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