Stiffer rear springs?

[hansshanks]

So. ... I'm running a IRO 5.5inch long arm front and rear on my 94 zj. It used to sit a little rear high. Then I added my rear bumper, tire carrier, and roof rack. And it is squated. I believe IRO said the rear springs are 200lb. Does any one know of a heavier spring or are mine just sagged. I've had them on for 3 years. I am having a hard time believing in the only one needing heavier springs. I don't have a uncommon set up or weight. I have nearly no up travel now before My rear upper arms come in contact with the crossmember. I bottom out everywhere. I'm having a hard time believing in need to go up to 7 inch springs to get up travel back?

How she sits now.






Available up travel on shock.





Center of hub to fender measurement.



Pass rear control arm clearance



Drivers side

 

[OhioWrangler]

First, Thank you for your service. I sure someone has a higher rate progressive spring. Sorry I'm a leaf spring guy. Ron

 

[Jeep or Tacoma]

try OME heavy duty

 

[comptiger5000]

I'd start with just emailing every company that makes 5.5" or so ZJ springs to find out the rates.

Because of how ZJ springs are shaped, they can be safely cut at the bottom and still seat properly on the spring pads. So another option is to find a 7" spring around the same stiffness as yours, and then cut it until you get to the desired ride height. Coil springs get stiffer as you cut them, so cutting a 7" 200lb spring down to your desired height might get you a 220lb spring that sits at the height you want. And you can pick your desired height by just cutting a 1/4 coil at a time until it's no longer too high, which will help dis-associate ride height and spring rate to some degree.

 

[jeepgc]

+1 for OME HD. When our Jeep was loaded up with storage, swing away and roof rack, the rear sagged.

We went with OME HD and this problem was cured.

 

[Mitch502]

If you're just wanting a solution, put spacers in? They make .75", 1", etc as I'm sure you know...wouldn't that solve your issue? If you want springs, I have heard of guys having to run diff lift heights front/rear for your reasons (bumper, tire, etc)

 

[comptiger5000]

Guys, OME HD isn't a solution for this... He's lifted 5.5 inches. The tallest OME spring is much shorter than that.

 

[mtbxj87]

PAC racing springs.

 

[hansshanks]

thank you for the info I will do some more research and sit what I can figure out. For my trip coming up Thursday I am going to run spacers as a temporary bandaid