Grinding noise from engine bay? (Series I)

Hey guys, this I am thinking maybe a SC noise but not sure. What is happening is I am getting a sort of grinding noise coming from engine bay when I am stopped in an intersection with the brakes applied. Its defination not relation to the brake components I am positive it is coming from the engine or its SC. Anybody have an idea on this 1? My guess was SC coupler but thought I would test the waters here before jumping to conclusions. Thanks for any help you can offer.

It could by your AC compressor clutch is seizing up. Take a look at the spot in your engine bay right below your AC compressor. You might have metal shavings. With hood open and engine running you should be able to tell if it's from there. This happened to mine.

To be sure if it may be the A/C clutch, just turn the Defroster on and off and listen to the noise.
The defroster setting will turn the A/c compressor on in the winter.

It could also easily be an idler or tensioner pulley. I recommend removing the belts and spinning the pullies by hand. While the belt is off, give the supercharger a spin back and forth. It could be the coupler making the noise. A lot of back and forth play would indicate a worn coupler.

K thanx for the help guys I will have a look at it all again this weekend.

A recent grinding...and i mean GRINDING....noise that happened to me was a bad waterpump. Something else to check into too, unless yours is newer. Check for pulley wobble on ANY pulleys in the engine.