cleaning advice for Alumin valve covers (70 C3)

[Travis Williamson]

[Joe L.]

Re: cleaning advice for Alumin valve covers (70 C3

Travis----

There were, basically, three "generations" of these valve covers. The first generation was 1969 only. These covers had no internal drippers and were unpolished. Their finish was a natural, as-cast. Similar to the earlier Corvette valve covers but, perhaps, even a bit duller.

The second generation, used from 1970 to 1977, had a very light polish. Some of the very early examples may not have been polished, at all. However, I purchased a set of these over-the-counter in early 1970 and that set definitely had a very light polish (some remnants of the polishing compound were still present on the covers). As I say, though, it was a very light polish. These oxidize very quickly as there is no clear coat. Upon oxidation, the surface color reverts to just about the same as the 1969 covers, except that the surface is still a bit smoother (due to the light polish).

The third generation, including those still being sold, have a very high polish. These covers were never used on a PRODUCTION Corvette but have been sold in SERVICE since about 1979 as replacements for the 69-77 small block aluminum valve covers.

[Rob A.]

Re: cleaning advice for Alumin valve covers (70 C3

Travis,

Use lacquer thinner. It cleans well, evaporates quickly and will not alter the original fnish, whether it is natural or polished.

[KEN BUTCHER]

Re: cleaning advice for Alumin valve covers (70 C3

Hey Travis, your valve covers look pretty original because as "JOE" say's they had no shine. But if your not happy, take them to a metal polishing shop to buff them up. They won't come out as shinny as those after-market ones but they will be clean and will age nicely for about $35. to $40. I did it to my 1974 L-82 Z-28 and I was HAPPY.... But your valve covers look great.
Ken.

[Travis Williamson]

Thanks Joe and Rob! *NM*

[Travis Williamson]

and Ken! *NM*