View Full Version : Sammy vibration in 4X4

Jimny Jap scrap
12-21-2013, 04:15 PM
Hey guys,

Has anyone noticed vibration in 4x4 after putting on a Spoa lift?
Anytime I put 'er 4 and go over 15kph it vibrates on accell and deacell.
Ive checked my U joints and they seem fine, I have the driveshafts in phase.
I also just put in some 4.9's in the transfer case which made the problem worse, I think just due to higher RPM.

Anyone have any suggestions?

12-21-2013, 07:35 PM
Pinion angles are wrong or you need a anti wrap bar with a spoa
The reason the transfer case gears made it worse is it has increased the torque output and is rotating the diff more

12-21-2013, 07:47 PM
what bruce said lol

The shocker
01-14-2014, 01:23 PM
Newb here, How do I Check pinion angles??
Picked up some YJ springs and and the RR kit for a swap. prolly just going to make it worse....

01-14-2014, 01:58 PM
The transfer case front output is on an angle that you can't make work with the front pinion.... Basically the noise is your driveshaft somewhat binding

You can still use it, but that's the outcome... Try and stay in 2 or 4low(as I do)

Or... Spent the $450 for a cv driveshaft... Then no more noise

01-14-2014, 02:32 PM
[stupid] ...............:D .

01-14-2014, 11:04 PM
Yay!!! ..... Damnit