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.

"i reject your reality and substitute my own" - adam savage. i suspect my final words maybe "well shit, that didnt work"

instead of perfection some times we just have to accept practicality

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Sun, Jun 11, 2023 12:06 PM

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