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Cast iron fuel tank cap prep question

Cast iron fuel tank cap prep question

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Haus
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I'm about to put my fuel cap (4A60) back together. Should I coat or paint it inside? It was a bit rusty, but I couldn't tell whether it had originally been sealed inside.

 [attachment=72590]IMG20230610174121.jpg[/attachment]

​​​​​​Paul.
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Sat, Jun 10, 2023 5:03 PM
Dandy Dave
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I don't believe they were ever painted inside as they were always metal color when we put fuel in them years ago. If you plan on coating it with something I would sandblast/ glass bead the inside first so paint will not flake off and get it the fuel in the future.
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Sat, Jun 10, 2023 5:24 PM
trainzkid88
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Reply to Dandy Dave:
I don't believe they were ever painted inside as they were always metal color when we put fuel in them years ago. If you plan on coating it with something I would sandblast/ glass bead the inside first so paint will not flake off and get it the fuel in the future.
i would just give it a squirt of lanolin spray let it soak in and wipe off the excess. every so often give it another spray. do this after its been painted on the outside.
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Sun, Jun 11, 2023 12:06 PM
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