Sixgun wrote: ↑Sat Sep 08, 2018 11:33 pm
Jay,
How about the front of the rear driveshaft where it connects to the transfer case? I've seen them come apart when the right angle is not right. I used a transfer case lowering kit for the old 89 YJ but it was not needed on the Rubicon when I lift d that
What exactly did you do? Do you have a suspension lift.---6
The rear driveshaft has been changed to a double cardan setup like the front one is from the factory. When this is done, the rear pinion needs to be rotated to match the angle of the driveshaft. This is what causes most of the issues with a four link suspension. The angle is set by using adjustable control arms. Wheelbase has to be adjusted, track bar bracket angle needs to be corrected, shock mounts. Mucho issues. The front isn't quite as bad because the driveshaft is longer.
Yes, I have an Old Man Emu suspension lift. Adds between 2 and 3". I also have a JKS 1.25" body lift to give more room for uptravel and to make room for the transmission and transfer when the skid pushes it up. Even still, I had to dimple the tub in a couple places and re-route wires. I also have a JKS 1" motor mount lift to keep the engine height correct with everything. Track bars have been replaced with adjustable ones also.
This may all seem ridiculous, but it is the easiest way to gain that much clearance. Putting on a flat skid effects your driveline just like a suspension lift, so my combined is almost 6", but I only need to run 33" tires.
I would need to run 40" tires to gain that much clearance with my stock skid pan.
The reason you had to drop your transfer on the YJ is it has a slip yoke on the transfer output with a very short driveshaft and single u-joints. You can eliminate the drop by going to a slip yoke eliminator and double cardan driveshft.
The Rubicons came from the factory with a fixed yoke output, and as such can handle moderate lifts without issue with the driveshaft angle. Everything in the driveline is different on a Rubicon compared to a standard TJ.
"Oh bother", said Pooh, as he chambered another round.