transmission noise

I have a 1992 integra wit a S1 manual transmission with a lightweight fidanza flywheel ACT 6PUC unsprung clutch and heavy duty pressure plate ! Transmission was making a knocking noise thought it was the throw out bearing take it out ant the spring for the throw out bearing was broken so replaced spring and throw out bearing and transmission still making a knocking noise but when clutch is pressed it stops. What else could it be.

It could be the input shaft bearings, or the bearing in the flywheel(but I think people have went without this one, but it probably aides in the failure of the input shaft bearings

Alright thanks , ima have to take it apart again and check more now

Probably input shaft bearing. I just had mine replaced and now it is noise free with the same symptoms you had.

alright thanks