ae86 knocking noise

[Eircamae86]

Your Coilover insert may be loose, take off the coilover, loosen the spring & push/pull the shock rod, if it bangs then tighten down the cap which holds down the shock, I would try this 1st, that way you can check everything.

When the coilover is out, push/pull on the camber plate, if there is excessive travel, the spherical bearing may be gone, technotoytuning.com used to have a repair bearing kit