my valve covers were real clean( steamed them) and i wiped them down with solvent. i did not scuff them at all. they are cast aluminum. will i have a problem with the coating staying on them in time? as far as the finished product, i feel they couldn't have turned out any better. perfect flow out.
p.s. the covers are off my 87 turbo-t regal (6 cyl.) so both of them fit real easy in my oven.
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