Nothing is hitting the valve covers... The preload should be between 20 and 40 from what I have read. Mine is 70 but I need to check more thoroughly to confirm. I know it's not oil viscosity, it's not rocker orientation or shaft orientation, it's not a lubrication to the rockers issue and it isn't anything hitting the valve covers. There's no metal in the oil.

Last edited by Telvis; 03/17/14 12:18 PM.
That's King Weenie to you!