Define198

Ok so today i replaced my belt and the two idle pulley bearings as i have had a strange scratching type noise and presumed it was the bearings from one of them, or my belt worn out, after replacing them i still have the noise, does anyone have any idea what it might be?

[media]https://youtu.be/0PQd8g8KqnA[/media]

also to note, since going supercharged car has been overheating (on the dash) once you put your foot down and do some pulls, so i am beginning to wonder if it might be the water pump?

Define198

ok so i took the belt back off, and gave the water pump and the rest of the pulleys a bit of a spin, the pump does make a squeek noise when it slows down, but does not feel scratchy when you try and spin it, the rest of the pulleys feel fine with no movement etc.

https://www.youtube.com/watch?v=hOsRBK_OD3c

Booti

Alternator bearing maybe?

Define198

i did spin it and it sounded fine, unless its something inside the alternator?

Booti

Might only show up when under a sideways load from the tension of the belt. Would suggest a stethoscope or screwdriver to the earr next (carefully)