Today I installed my Rockjock rear springs. I got the RH2 part number which is advertised as 3.5" lift for an LJ and 4" for a TJ. They replaced some unknown brand springs that I believe were a 2.5" lift and I had a 3/4" spacer on top. As it sat, the rear looked squatty but the frame was just about perfectly level at 21" on the driver LCA mounts and about 1/8" measurable squat on the passenger. My shocks were at about 19-7/8" eye to eye from my notes, though I didn't note which side I got that measurement from, and I later discovered the passenger side was 1/2" lower than the driver. So at least one side was nearly perfect at 50/50.
I now have 21.5" eye to eye on the driver side and 21" on the passenger. Frame heights:
Front driver: 21"
Rear driver 21-11/16"
Front passenger 20-5/8"
Rear passenger 21.5"
Rear driver spring sits at 12.7", indicating a 4.7" lift with the passenger side measuring about 4.2".
These measurements are all with a half tank of gas and loaded how I drive it most of the time.
The OCD in me wants to get a spacer for the passenger side by I figure it probably evens out with me in it. Plus the spacers I have are incompatible with the Rockjock bump stop kit and I don't really want to buy more and try to find something that works.
All in all I'm happy with the ride height change. The rake isn't overly aggressive but at least so far in the garage the squatty look is gone. I'm glad I went with the 4" TJ springs instead of the 4" LJ springs...I would not have wanted any more height.
Now for the bad news...my Ranchos are now at 5.9 up/3.7 down. That's about 62% uptravel which I'm not overly enthusiastic about so I'm thinking about some bar pin eliminators to get me back to 50/50 where I was. That said...the ranchos are blown anyway, behaving like a hydraulic shock just staying where I put it and not extending. Pretty disappointing having less than 20k miles on them, though my wheeling buddies do complain about my speed on the access roads so maybe a $50 shock just isn't up to driving like I'm in Baja
. So I guess it's as good a time as any to give the BlackMax a try. Gonna do some research to see if I can find one the right length without the bar pin so I don't have to mess with the bushing before installing it.