Car had a clutch kit put in 500 miles ago, shifts fine. You can hear a small rattle at idle and gets really really bad above 2500-3000 rpm. Goes into gears fine. Full of fluid. It doesn't sound like a throw out bearing but not sure. Could it be a front bearing in trans or pilot bushing ??

 

Idler pulley is my guess, those are notorious for making noise.

Are you sure it is coming from the trans? Stand over by the passenger side, with the hood up and listen from the top.

 

Idler pulley is good. Noise sounds like from inbetween the motor and trans, really bad noise when reved up, im thinking bearing in trans ?

 

Does the noise go away when you depress the clutch pedal?

 

It stayed the same but thanks found the problem, the flywheel bolts was loose, might need a crank now.