From 4 inch skyjacker to 6" ?

[O2BDrty]

Have a 07 JK Rubicon and will be needing new tires soon so will go with 37's. Since all I HAVE to replace on my lift is new coil springs, control arms and sway bar connects ( everything else is done ) I need some help on what to do. Should I stick with 4" of lift or make the move to a 6"? I want heavy duty springs for sure and can't afford a long arm. Maybe somebody has great pointers for me. PM me if you want or just post here. Thanks. Oh, It doen't need to be skyjacker that i stick with. I'm disappointed in the lift that I have.

[PBach]

Have a 07 JK Rubicon and will be needing new tires soon so will go with 37's. Since all I HAVE to replace on my lift is new coil springs, control arms and sway bar connects ( everything else is done ) I need some help on what to do. Should I stick with 4" of lift or make the move to a 6"? I want heavy duty springs for sure and can't afford a long arm. Maybe somebody has great pointers for me. PM me if you want or just post here. Thanks. Oh, It doen't need to be skyjacker that i stick with. I'm disappointed in the lift that I have.

I went from 4 to 6 inches, only because I wanted the break over clearance for my 4 door. With 4 inches, there were many obstacles that I was not able to make because I'd hang up in the middle of the long jeep. The extra couple of inches gave me what I was looking for. Personally, I would do long arms with 6 inches of lift. Even with the longer factory JK arms, they still start to get a steep angle at this height.
4 inches is plenty of lift for 37's. The question to ask yourself is if you are really going to be doing trails that require a six inch lift.
As for heavy duty springs.....maybe you could clarify your reasoning for heavy duty springs? Do you mean a spring with a higher spring rate? Are you carring a heavy load?
Lastly, make sure your steering and track bars are up to the lift height. Check your brake lines. What about your axle strength with the new 37's? The two additional inches in tire size and lift height can create more issues than you might be aware of if you plan to wheel the rig hard.

[O2BDrty]

The springs that came with the skyjacker I found out are made within 10% of factory specs. That just isn't good enough. No heavy loads just want something solid. The jeep has been wheeled fairly hard. I have 57,000 miles on it right now and the jeep leans really bad to the passenger side. The brake lines have been replaced. Front and rear track bars are poly performance completly adjustable with a high steer kit in the front. As for axles it is a Rubicon with dana 44's.

[PBach]

The springs that came with the skyjacker I found out are made within 10% of factory specs. That just isn't good enough. No heavy loads just want something solid. The jeep has been wheeled fairly hard. I have 57,000 miles on it right now and the jeep leans really bad to the passenger side. The brake lines have been replaced. Front and rear track bars are poly performance completly adjustable with a high steer kit in the front. As for axles it is a Rubicon with dana 44's.

Why isn't 10% "good enough"? Only reason to want a "heavy duty" spring is to help offset the weight of additional equipment(weight), such as winch, bumpers and larger tires(unsprung weight), with a higher spring rate. I have 70,000 miles on my Jeep and about 60,000 of those are with the Skyjacker 4 inch springs. I added a 2 inch spacer at about 45,000 miles and have had no problems with leaning, however, have heard of this with their springs. I don't think that a spring with a higher spring rate is your answer. To me, it sounds like your spring has fatigued due to over compression or it is defective.
As for axles, I broke a front axle due to the u-joint cap falling out and the ear sheared off. Personally, I wouldn't run the Rubi axles without addressing the u-joints. I think the axle shafts are pretty darn strong and will hold up to the 37's just fine with moderate wheeling but I changed to National Drive Train TEN Factory chomos for the tough trails. I also did the Mt. Logan sleeve and gusset kit. Great insurance for your Dana 44's! Sounds like you got everything else in line.

[O2BDrty]

I have Fab four bumpers front and rear with a ramsey winch in the front and 35" spare in the rear and wil switch to 37's soon. When the swing gate opens to the passenger side the jeep leans really bad to that side. My wife feels as if thats good enough for her to say get new springs now. What do you mean by a 2 inch spacer? (pics). Everything else you said in the 2nd paragragh is all greek to me. I have no idea what your saying. Sorry. I feel really stupid.

[PBach]

I have Fab four bumpers front and rear with a ramsey winch in the front and 35" spare in the rear and wil switch to 37's soon. When the swing gate opens to the passenger side the jeep leans really bad to that side. My wife feels as if thats good enough for her to say get new springs now. What do you mean by a 2 inch spacer? (pics). Everything else you said in the 2nd paragragh is all greek to me. I have no idea what your saying. Sorry. I feel really stupid.

Hmmmm. Well, I guess it just comes down to personal preference. If you feel that you want a more firm spring, then you should get them, especially if the wife is telling you to do so.;)
As for the second paragraph, don't feel stupid. Just a bunch of axle strength mumbo jumbo. My general point is that if you are going to run 37's on the Dana 44's, you should consider some simple strength upgrades, if you intend to take the jeep into some pretty serious places. HOwever, a big problem with the axles is the small c-clips that hold your ujoints in place. These have a tendency to break or fall out, allowing your ujoints to work loose. This can happen even with the stock set up. Search around this forum and you'll learn more about what I'm talking about.:beer:

[O2BDrty]

Thanks for your help. Everybody else please chime in as well.