Originally Posted by redondoaveb

The volute does have a shallow groove in it. Obviously the fin(s) were rubbing on it. There's definitely damage inside or it wouldn't be making the loud whine. Nope, didn't find the missing piece, I'm assuming it's inside. I'm just hoping it didn't damage the gears then it might be worth rebuilding. After I get my new blower installed, I'll take this blower to vortech and have them open it up and evaluate it.