Chris Haynes Well-known member Apr 1, 2018 #41 barnstuf said: In Chris Haynes post #22 those new old stock piston rings are not Model A rings. The part number prefix 81A refers to 1938 as first year of usage, and the part numbers 01A and 01T refer to 1940 first year of use. Click to expand... I don't care what the are. They will remain in those boxes for my lifetime.
barnstuf said: In Chris Haynes post #22 those new old stock piston rings are not Model A rings. The part number prefix 81A refers to 1938 as first year of usage, and the part numbers 01A and 01T refer to 1940 first year of use. Click to expand... I don't care what the are. They will remain in those boxes for my lifetime.
