First of the toe links have been replaced with adjustable to links, so that isn't the problem.

rear suspension is made up of:
T2 rear end and CV shafts (car is a 90 GTU)
KYB AGX
Full urethane bushing kit
mazda comp diff mount
pinion snubber
solid plastic rear diff mounts
eibach pro kit springs
strut tower bar

pretty much the only thing I haven't done is the rear steer eliminator.

everything is properly installed, nothing is loose

car aligned out fine

When I go over light small bumps there is a clicking sound, real low volume not loud at all.

Sometimes during a burnout/lauch there is a real loud hammer sound like hitting the floor board with a ball peen hammer, I think this might be the diff bouncing off the pinion snubber (in which case its probably not an issue) also likley unrelated but I though I would mention it.

I have had the car on a lift, suspension loaded and unloaded pushing pulling hammering on parts I can't simulate the sound.

Any ideas???

 

I had a similar issue, turns out that one of the muffler's hanger was loose (one of the sides).

 

Did you assemble the strut tower mounts properly? Double checked?

 

Yep one at a time with the help of the fsm.

 

+1 on the muffler hanger..... just fixed mine before the engine blew

 

How much camber are you taking out with the adjustables?

Might be binding the outer bushing of the rear control arms.

 

I only had 1.5 degree's neg adjusted back to factory spec primarily for street driving/drag racing.

My muffler hangers all look good and I have a flex joint in the down pipe, I don't think its that.

 

even though your muffle hangers look good, i have found that the muffler can bounce up and hit the rear sway bar, check the clearance b/t those