Rear End Droop Diagnosis?

[n8marx]

Well, it happened. A few nights ago I spun my 911. It didn't technically spin because I caught it very early but in the process of trying to correct the spin I went over a curb and came to rest against a keystone retaining wall. Light hit, front right corner. I didn't smack into the curb sideways or anything, I drove over it straight on. I am currently looking over my 911 making a laundry list of items for the shop to fix. The right rear ride height seems to have dropped from about 24.25" to 23.75". All of the suspension pieces look normal and there is no sign of contact with the curb.

My question is could I have blown out the shock at that corner? Would that cause the suspension to droop about 1/2"? How do I diagnose a bad shock?

[kstylianos]

Nate,

If you have Bilstein (gas filled) you may be lucky as these have been know to raise height after initial install, then settle back down after they have been worked in. If they went kaput from the shock of hitting the curb, releasing any presure, this could be your problem and an easy fix.

Generally, shocks do not determine the ride height, tension of the t-bars do. If its not the shock, possible other causes:

1) bent A-arm
2) bent spindle (you would notice serious negative camber though)
3) snapped t-bar
4) bent sway bar

EDIT: Sorry Nate, just noticed you had droop in the REAR, not the front. Suspension changes in the front also affect ride height (coner balance) in the rear (and vice-versa), usually opposite corners are affected. I'd check all 4 corners for damage, probably easily done on a lift. There is not too much that can get seriously bent in the rear, other than the bananna arm, which is highly unlikely. I'd also check for loose bolts or shifting of the spring plates.