I hit a border on curb last monday with my right rear tire (no excuse , I take this curb twice a day ??????)

And now the car is shaking all over when I turn right, a bit less when I turn left, and not at all in straight line!

How strong is the rear diff ?

Did I damage the diff, or more likely the half-shafts ?

Are they rebuildable or do I have to find new ones ?

How to tell if it's the diff or something else, I did put the car on a lift and nothing looks bended or even out of place, no leak, I know a tiny bit is enough so!

Well, as it's my daily driver, please be fast to respond!!!!!!

Boomer

First off, I'm assuming you slid the right rear of your Z into a curb while going around a turn!!? Anyway, you may want to inspect your wheel as it may have been knocked out of true from the impact. Also, get it back on the rack and take measurements, as you would for checking the squareness of any object. You may need a second person to help. Somehow I don't think your problem is the differential.

Bent wheel, bent hub, bent control arm, bent strut housing. I think those are your most likely possibilities in that order. Could be a combination.

I have a spare set of wheels, I swaped them and nada still vibe and noise...

I have to say that it's a 280zx from 83 so I dont have u-joint but tripods one!

Today the noise was so loud that I canot use the car any longer!

So I know for sure that it's not the wheel-

The noise is strong on left/right turn and while braking...

I hit a border on curb last monday with my right rear tire (no excuse , I take this curb twice a day ??????)

I assume you meant you take this curve twice a day.

How about up high were the strut mounts inside the cabin, pull the cap and have a look there. Maybe you can have someone follow you and have a look at the rear and see what she does?

Best of luck,

Dave

I hit the curb in the curve...