[Mdman352]

Greetings. I need some advice as to what to use on two different aluminum parts on my Contemporary Cobra.
1. The engine compartment has aluminum panels sparating the engine from the running gear. They are a little grimmy and I would likee to get them clean with out ruining the surface shine.
2. I have the cast aluminum "Cobra 427" valve covers and they as well as the manifold and the water pump are gross!!! Dirt, grime, rust, fuel staining.....

These covers were in a wash cabinet with 180 degree water first then I have tried: stuff for cleaning aluminum semi trailers, Simple Green, Ajax, oven cleaner (worked pretty good).....
I am heading towards getting them bead blasted but not with the cut glass, using balls instead. Can anyone suggest something that will clean these items?
Thanks.
David