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Old 11-12-2012, 12:16 AM   #1
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4 inch vs 5.5 inch lift?

Hello all, I am looking at putting a Synergy lift kit on my 2012 JK and just wondering what would be better. They are the same price for the kit so I am guessing the only difference would be the spring height. I am wanting to build an all trail ready daily driver. I'm new to the Jeep scene but from what I have read and learned so far is that the JK's only need 4 inches of lift, for the amount of money that a lift costs why not go for the extra 1.5 inches? Is there alot more involved with a 5.5 lift? Thanks in advance!

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Old 11-12-2012, 01:09 AM   #2
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Yes a lot more comes with a 4" lift and larger like.
1. new brake lines
2. new front and rear drive shafts
3. exhaust work
4. if you have a 4" lift or more you need 35" tires or bigger 35's are pushing the limit on stock axle components you will eventually have some of them break.
5. with tires 35's or larger your going to have a major loss in power so you will have to put new gears in your jeep to get it back to running like stock again.

I am sure I am missing a few things but I guess thats for starters.

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Old 11-12-2012, 08:59 AM   #3
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Oh wow ok, I was already aware of a few of those things, what would you recommend for gears for running 37 inch tires?
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Old 11-12-2012, 09:02 AM   #4
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Couple guys running 5.5 or more. Unless you plan on or have the budget for 40's and gears/driveshafts/etc. it's not really necessary.
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Old 11-12-2012, 09:17 AM   #5
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Quote:
Originally Posted by jodatu86 View Post
I'm new to the Jeep scene but from what I have read and learned so far is that the JK's only need 4 inches of lift, for the amount of money that a lift costs why not go for the extra 1.5 inches? Is there alot more involved with a 5.5 lift?
Only "need" 4" of lift for what? Only a handful of JKers "need" 4" of lift, and if you're new to jeeps then you're probably not one of them.

That said, it's your money and you can spend it however you like regardless of whether it's actually "needed." But tell us, what are your goals and your budget? Running 37" tires under 4" of lift is no small feat, and will require considerable expense to actually produce a vehicle that handles with close to factory-like characteristics.
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Old 11-12-2012, 09:29 AM   #6
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Quote:
Originally Posted by jodatu86 View Post
Hello all, I am looking at putting a Synergy lift kit on my 2012 JK and just wondering what would be better. They are the same price for the kit so I am guessing the only difference would be the spring height. I am wanting to build an all trail ready daily driver. I'm new to the Jeep scene but from what I have read and learned so far is that the JK's only need 4 inches of lift, for the amount of money that a lift costs why not go for the extra 1.5 inches? Is there alot more involved with a 5.5 lift? Thanks in advance!
Keep researching. If you noticed most JKer's steer newbies away from 4" lifts and above. mostly cause the newbies don't know what is involved with running a lift like that. If you did more reading you will notice JK's only "need" 2.5" of lift. 35's will clear easily.

Also as for running 35's on stock axles, perfectly fine. 35's aren't at the "limit" for stock axles. You can run 37's on the stock axles with some reinforcing such as gussets and maybe sleeves or truss. Gearing, i suggest for a 2012 on 37's, 4.88 or 5.13.

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Old 11-12-2012, 09:34 AM   #7
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Originally Posted by pluke the 2
i installed 4" poly performance springs on my rig. it's got 37" tires.
knew Pluke would show up lol
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Old 11-12-2012, 09:35 AM   #8
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heard you got the poly dlf
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Old 11-12-2012, 09:39 AM   #9
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you need a big ass drill bit that can hold a 1/2" chuck. i think most drills only do 3/8" max.

and you will need an angle drill because of the brackets that raise your sway bar links. you can't get in there with a straight drill because the brakes are in the way.

also a drill punch will be needed so you can start the drilling without the bit walking on ya.

oh, 7/8" drill fun fun fun fun
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Old 11-12-2012, 11:01 AM   #10
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Fun fun fun
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Old 11-12-2012, 12:20 PM   #11
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I am just wanting to build a monster truck, something that rides smooth on road and can hold its own on the trail as well. I want to run 35's or 37's just for fun. I am active duty military so I dont really have a budget.
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Old 11-12-2012, 12:34 PM   #12
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Just know what you are getting into. Most kits of that caliper are complete. I like RK because of the high steer included.
PM Watchthis or WesterM3. 2 dudes who went all out.
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Old 11-12-2012, 01:06 PM   #13
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get a 6" long arm - 3,600 with shocks

get front and rear drive shafts - 1,000

either install it yourself = 0

or have someone professionally install it = 1,500 - 2,000

regear = 1,000 - 2,000

sleeve and gusset = 350 assuming you do it all at once with the re-gear...

so, at the minimum, if you want to do it right and the first time, youre looking at:

5,590 no tax

maximum without tax

8,950 no tax

since your active duty and you have no budget, this should be no problem.

thanks for serving
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Old 11-12-2012, 01:10 PM   #14
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or you can go coilovers for about 10-15 grand

which would be the best way to go. especially if your wanting a monster truck on and off the road with "best of all worlds".
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Old 11-12-2012, 01:15 PM   #15
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Oh my...and that's why us with the shiny rank hate getting phone calls on the weekend, learning Joe married a stripper or rented 24 inch rims...

I guess that could be unfair...but, if you were the sort with a pay grade that cost wasn't and object, you'd be doing your research instead of coming to a forum and asking how to build a monster truck...
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Old 11-12-2012, 01:19 PM   #16
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Old 11-12-2012, 01:59 PM   #17
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Quote:
Originally Posted by jodatu86
I am just wanting to build a monster truck, something that rides smooth on road and can hold its own on the trail as well. I want to run 35's or 37's just for fun. I am active duty military so I dont really have a budget.
It can be done, just cost alot of coin. The group I wheel with don't have a problem driving a long ways away, wheeling the piss out of them on the hardest trails a park has to offer, then driving them home. You just have to be sure you use top notch parts.

Building them this way is not for everyone. I could have built a bad ass buggy and had a tow rig for it with the money I have put into my jeep. But I will let you in on little secret, I love airing up at the end of the day hours away from the house and having everyone ask me where my tow rig is. I get all kinds of reactions from people when they find out I drove it that far and wheel it like I do knowing it has to get me home.
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Old 11-12-2012, 03:13 PM   #18
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Vote 6in long arm kit

I have zero regrets about my Teraflex 6inch long arm kit, but I was dead set on 40's. Just depends on the look you want and what you are going to do with it

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