Originally Posted by ageorgakis
Congrats! Excellent job!
Here's my question: I have a 4.5" lift with around 1.5" coil spacers. I have a SYE kit installed from Rubicon Express with a CV shaft from Tom Woods. I took care of my driveline angles as per your drawings above, but I STILL get vibrations though the seat when I'm around 1900-2100 RPM on a highway. Should I point my pinion towards the centerline of the t-case OUTPUT or towards the double cardan?
the pinion should be at the same angle as the driveshaft. i.e. driveshaft centerline should be the same as the pinion centerline.
that should automatically set where the double cardan lands.
keep in mind with a SWB TJ & high lifts, you CAN run into the limit of a standard SYE...thats why JB conversions sells the SuperShort SYE. some say this limit around 6-8" of lift, depending how your getting that lift (TT, MML, SL, etc).
Assuming your RE SYE is really the RE Hack'N Tap, it's actually slightly longer than a fixed yoke
SYE, like the Advance Adapters or the JB Conversions SuperShort SYE. Meaning you're more likely to run into vibes at very tall lifts.
But there are other factors that could the problem. Rear tire balance, out of round tire, bent rim, driveshaft balance, pinion or flange nut not torqued properly, motor mounts, trans mount, etc.