my friend has a 2000 gs-r and for some reason his car overheated bad the other day and ever since then there is a funny noise coming from the belts and pulleys it kinda sounds like a pulley is warped or something. does anybody have any idea what might have happened or what it could be? thanks for the help!

 

Well since you said the it overheated... Check if the Electric Coolant fan blades are broken or craked. Maybe the Inition timing is incorrect.