Vibration after lift

[dude1116]

Yeah, I def wouldn't describe this as a rumble, and it certainly doesn't feel/sound like its coming from the front end. It feels almost like a harmonic, but the harder I push the gas the worse it is. Only between 50 - 55, and only when applying the gas.

I get this in 4wd around 40mph. Might be the same issue, different spot. Either a CV or a U-Joint.

 

[Luke]

Weighing the back end down (way down) makes the rumble disappear on my KJ ... and it diminished when I removed the extra iso in the rear.

I just assumed it was because the amount of lift is less when the rear is loaded down, and the pinion angle is closer to normal?

 

[tommudd]

Weighing the back end down (way down) makes the rumble disappear on my KJ ... and it diminished when I removed the extra iso in the rear.

I just assumed it was because the amount of lift is less when the rear is loaded down, and the pinion angle is closer to normal?

What does yours measure, rear ??

 

[Luke]

22"