car vibrates around 5000rpm

Hi guys,

my z vibrates at around 5000 rpm while driving, it wont do it in neutral.

i cant really remember when it started to do it but i think it was after my center bearing was replaced.

heres a video of it, around 5k rpm you can hear everything rattle and as soon as it goes over or under it stops straight away.

http://s534.photobucket.com/albums/ee350/zomblewarezbb/?action=view&current=300zx5krpmvibration.mp4

Any hints on where to start looking

 

Your centre bearing replacement has resulted in the tailshaft being put back together "out of phase".

 

nailed it in one Chili

 

Aww Shucks, did I did good?:rofl::rofl::br:

 

Yep, that one goes straight to the pool room.