Ermmm... still noise when both belts are off???
Bad news bud. If both belts are off, no pulleys are spinning, so not a pulley. That means nothing in the supercharger is spinning either, not the supercharger. Grats you have a new coupler, but you have engine problems too. Likely lower problems too, didn't sound like valvetrain noise to me... could be wrong.
Does it get faster with gas, or does it go away when you accelerate?
Does the car have a stock pulley or was did you/previous owner put a smaller one without supporting mods. (this usually results in chipped pistons)
Originally Posted by AmericanSoldier
