Oil Pan Plug - 7/8"

[fordfun]

Last week, after running the Coupe for the last time this year, I removed the drain plug and let the oil drain for a few days. Today I decided to replace the copper gasket before reinstalling the plug and refilling with oil. I find that the replacement gaskets provided by the vendor are 3/4" ID and my plug is 7/8" OD x 16 threads per inch.

Do I have a non-standard size plug, or are the gaskets incorrect? If the plug is incorrect can you suggest a source for 7/8" ID gaskets for the plug?

Thanks - Bill

[colin1928]

1928 plug was larger than the 29/31 plug

[Tom Wesenberg]

Hardware stores and local auto parts stores should have an assortment of copper gaskets. It's rare that I need to buy a new one rather than reuse the old one.

[colin1928]

Local hardware supply should have a range of copper washers

[jw hash]

Don is correct use a spark plug gasket. all Model A spark plugs are 7/8"

[fordfun]

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Thanks for the good suggestions. The plug may well be part of a '28 pan. The car was represented as a '29 Sports Coupe, and I suspect it either was significantly altered over the years or may have been assembled from parts of various other cars (Mod. B head and carb, etc.). I haven't been able to locate a frame number, but it may be hidden under the cab.