What should be the compression of a 31cc 2 cycle engine?

The ideal compression ratio for a 31cc 2-cycle engine typically ranges from 8:1 to 12:1, depending on the specific design and intended use of the engine. Higher compression ratiOS can improve power output and efficiency but may require higher octane fuel to prevent knocking. It's essential to consult the manufacturer's specifications for the specific engine model to determine the optimal compression ratio.