Questions on a lift?

Okay so I installed the bilstein 5100's, they are set to 2.5 with stock coils... I've read many threads and none seem to be my issues, my issue is that around 25 mph the truck shakes pretty hard and also sometimes even at 45-50. I'm trying to figure out what it is?

 

Any lift in the rear? Same vibes in 4wd?

 

Did you get an alignment?

 

Stolen from your other thread. So AAL in the rear, have you tried shims or dropping the carrier bearing using spacers?

 

No I haven't, it does change in 4wd at least with the slight whine I haven't really tried all that mouth but just the past 2-3 days the shacking has gotten worse the add a leaf is a 2 inch rear

 

I also did get an alignment

 

There is a couple really useful threads on here about how to correct vibrations caused by the driveshaft. Unfortunately there is no cure all solution, some people have good results with one method some with other methods. I would start by dropping you CB and see if you get any results, mainly because i think that is less work than installing shims on the axle beneath the leaf springs.

 

Okay, is that my cause?

 

Possibly, vibrations could be caused by the front diff also, seems like it is more common for vibrations to be caused by lifting the rear end though. You can "experiment" with the carrier bearing by simply adding washers to drop it. This thread is very in depth http://www.tacomaworld.com/forum/2nd-gen-tacomas/244535-drive-shaft-vibrations-solved-step-step.html
It is a little confusing and alot to read but it may help you understand what is going on.

 

Ok I'll take a look thanks