[Land-speed] piston rings

[Doug Odom]

List, I need to find some rings for a 4 cylinder race motor. The bore is
63.5mm or 2.5"
Top grove in piston is .037== old ring was .0355
Second grove in piston is .039== old ring was .038
Oil grove in piston is .080== ring was .081

I can machine larger groves in the piston if that is the only rings I can
get.
Thanks, Doug Odom in big ditch

ps. This motor started life as a Kawasaki industrial motor and was sleeved
down to run in a TQ Midget.
That was 20 years ago and the ring supplier is not around anymore.