Good question. Not sure, I had dealer install Rubicon suspension.
Please keep us posted after the alignment. Thank youSo we just had a rubicon suspension swapped into our sport today and a few things were noticed.
First, the steering wheel is slightly off to the left and will need to be adjusted. Not sure if that’s an easy task or not. Will probably let alignment peeps do it.
Second, the rear springs appear to be the same height but the front springs appear to be slightly differing heights. They compared the sport springs to make sure it wasn’t an anomaly with the rubicon take offs but they were the same. I gave the shop the part numbers I posted early on in this thread for springs so they were able to sort them out based on that. Don’t remember which was the tall vs short side but relaying the find for what it’s worth.
Lastly, they measured and compared and insisted the 4 sway bar links were identical, the two front lower control arms were identical and the spring perches were identical other than color. I had them go ahead and put the rubicon lower control arms and perches in, but I held the sway links out as spares down the road.
Overall made a nice ride difference and height difference. Pleased and will get the alignment and wheel straightened later this week.
Unless they totally changed their philosophy from the JK to the JL, there definitely will be different springs for different configurations. Not including special editions, like the 10A, there are 8 different front springs (12 to 19) used on JK's and 9 different rear springs (52 to 60). Each spring number increase is approximately 1/4" longer than the previous one. The lowest 4-5 are found primarily on 2dr's and the upper 4-5 on 4dr's. Hard top and tow package always meant higher spring numbers. The "number" is the last 2 digits before the letters in the part number, on the JL it can be found at the very bottom of the spring tag.
Good advice. I swapped out our hardtop Sport S suspension to one from a Rubicon hardtop with steel bumpers. Spring numbers were 87/88 and 57/58 on the Sport. Going to the Rubi's 89/90 and 59/60 gave me between 1 1/4 and 1 1/2" lift. I have the Rubicon tires in the basement and will get those mounted in a couple of week. That will give an overall of almost 2". I am very very satisfied with these results.
Always tighten up and torque with the weight of the whole vehicle on it while on the ground and not on a lift or jacked up. This is for control arms, trackbars, etc. things like any brackets should be fully torqued prior to putting the weight of the vehicle on it.
