Strange Clutch noise

[Reyes1503]

on my s13 ka24e i noticed that on idle with out pressing the clutch theirs a strange noise going on like a spinning motion, but as soon as i press the clutch it goes away. so then i let the clutch go slowly and slowly the noise comes back..... this is worrying me, the clutch seems fine. i have tested it by pressing it all the way in shifting the gear and slowly letting it go and also pressing the gas at the same time, before the clutch is half way out the car starts to pick up speed. (idk if thats a way to test it but it works well) another way i tested it was by shifting to first and stepping on it all the way to high RPM then shifting to the last gear(5th) and watching it slowly climb. they said if it don't struggle to climb then its good (also idk if thats a way to test the clutch but it worked) so please help............................ not that savvy on automobiles

i am trying to find out if this major or its a common problem and if its normal for the tranny to do that

thanks