1981 BMC drain plug

[Mrfixit290]

Hello, I need help finding a drain plug for my BMC bass boat. I just purchased the boat and the drain plug is missing. 1 inch is too small and 1 1/4 is way too big. What size should I go with? My local store does not carry anything in between. Any suggestions appreciated.

 

[Bondo]

Ayuh,..... Welcome Aboard,....... Is the hole threaded,..?? or smooth inside,..??

 

[Mrfixit290]

The hole is smooth

 

[Scott Danforth]

so you need an expanding plug

 

[Mrfixit290]

What size? 1 inch is too small and 1.25 is way too large