veyron1001bhp
New member
Well the mechanic clearly bsed you. A head gasket is under 50$ and you can find a used head for cheap as well. If the junyard head has carbon build up on the lip you can go to a machine shopand they will smooth it out for you. I doubt you will pay over 400$ with this method. If your chain snapped and your valves damaged the piston crowns then 900$ sounds reasonable.