You have to be a bit of a tin smith to get these valve covers to seal properly. I don't know which style of valve cover you have. For either style, you need to set the cover on the head without any gasket. This will give you an idea of where the trouble spots are.
The four screw style covers are often over-tightened and need to be hammered back flush at the screw holes.
The 2 acorn nut covers often bow out on the sides, and the area around the holes in the top get mashed in from over-tightening.
Use the head as your guide and anvil and straighten the flange area out.
I glue the gasket to the cover with 3M weatherstrip adhesive. No adhesive on the head.
Carl
Last edited by 52Carl; 05/18/2015 12:33 AM.
