Transmission input shaft bearings have gone bad or teeth on the gears have been damaged.
In a perfect transmission, there should be darn near no noise when letting the clutch out. The clutch is not the cause of the noise. Unless you have it in gear, let the clutch out, and the engine does not die, then you have a really serious problem inside the transmission. -----------------------REMOVE-FOOTER-WHEN-REPLYING---------------------------- Questions? Visit http://www.sdml.org/ To be removed, visit http://www.sdml.org/pages/leave.html