Bad CSB, Driveshaft balance?

[Nick_e30]

My 3rd csb is bad why does this keep happening. A new center support bearing only gives a temporary fix. Does my driveshaft need to be balanced?

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[e30davie]

How are your:

-engine mounts
-gbox mounts
-uni joints on drive shaft

[Nick_e30]

Mounts are new and I was told the joints and giubo were good when the first csb was replaced about 2 months ago

How are your:

-engine mounts
-gbox mounts
-uni joints on drive shaft

Sent from my SM-G950U using Tapatalk

[tomstin]

Was the CSB pre-loaded properly? That will kill a CSB pretty quick.

[mmire30]

Was the CSB pre-loaded properly? That will kill a CSB pretty quick.

How do you pre-load the CSB?

[ForcedFirebird]

If the giubo is installed wrong, it causes bad vibration and take out the CSB. There are arrows on it that have to point at the flanges. If you notice, the giubo has thick and thinner portions between the bolt holes. The thick part should be compressed in forward gears.

Another thing I have seen cause it is half shafts with excessive play. Jack one rear side up at a time and rotate the wheel with it in gear. There should be very little movement.