I have a better question. Why doesn't every TJ with a SYE have these vibes?Anybody understand how a double cardan even stays together at speed??
Amazes me.
I have a better question. Why doesn't every TJ with a SYE have these vibes?
This entire thread has been about dissecting the nuance of every component down to the minutest of detail to find some way to rule it out or blame it. So why doesn't every TJ have the same issue with the same components?
Did that Rubicon have new axle gearing?Very good question.
My black Rubicon I had years ago had a Currie 4" lift, 33s, and had no vibration at all whatsoever. I could take it to 90 mph and there was nothing like this whatsoever.
I always wondered why some of them had it and others didn't. @psrivats have talked about this in person and we can't figure it out either.
Did that Rubicon have new axle gearing?
The mystery deepens. I will be checking out @MutantNinjaTJ's rig when he has it broken in from his recent 4.56 gear install. Not exactly the same, as he has a 6-speed, but some have had issues even with 4.56.Yes, 4.88 Revolution gears.
I'm 4:56 with a pulsing vibe at 66-70.The mystery deepens. I will be checking out @MutantNinjaTJ's rig when he has it broken in from his recent 4.56 gear install. Not exactly the same, as he has a 6-speed, but some have had issues even with 4.56.
I'm sure I've mentioned this before but I built a rig for a friend. It started as a POS LCG build with horrible everything on it including inverted T steering. It was almost undriveable and herding it down the road was more accurate of how it drove. I noted several things that were shot and loose in the steering and fixed them because I had the parts to do so. On the test drive, instant DW and he never had a single instance of it happening. So, is it tightening up all the loose tolerances or loosening all the tight tolerances?After reading the post you had where you tightened so many things on someone's rig it made me wonder if cumulative loose tolerances are at play on some .
Got ya- , you have so much experience , you think very expansively .I'm sure I've mentioned this before but I built a rig for a friend. It started as a POS LCG build with horrible everything on it including inverted T steering. It was almost undriveable and herding it down the road was more accurate of how it drove. I noted several things that were shot and loose in the steering and fixed them because I had the parts to do so. On the test drive, instant DW and he never had a single instance of it happening. So, is it tightening up all the loose tolerances or loosening all the tight tolerances?
I have a better question. Why doesn't every TJ with a SYE have these vibes?
The mystery deepens. I will be checking out @MutantNinjaTJ's rig when he has it broken in from his recent 4.56 gear install. Not exactly the same, as he has a 6-speed, but some have had issues even with 4.56.
If I could be even close to assured my Rubicon would end up as vibe-free as your black one, I'd be making an appointment asap for a 4.88 gear change.
I figure the odds are low ....and the odds of being disgusted are really high if it happens too.Yep, it seems there is no rhyme and reason. In fact, I would be willing to bet more people don't have the harmonic vibration after re-gearing than those who do. But, as is the nature of the internet, you only read about the bad stuff.
It's really a gamble though, that's for sure.
Last summer I perfected the vibe free re gear . Jeep wouldn't roll , but you could sit in it for hours and feel nothing .
The mileage was unbelievable .You crack me up, @AndyG !
Since the vibration is cyclical and mph affects it has anyone changed unit bearings? They can get set marks in the races from high impacts or just wear out from use and abuse. I got rid of DW by doing that and ball joints, but for a short while before the DW showed it’s ugly head I had a similar vibration at 45 to 55. My DW would happen at those speeds once it started. Just a thought, they are $90 a side and not that hard to change.