The bore is larger than the stroke in an oversquare engine.

The bore is larger than the stroke in an oversquare engine.

• A. False
• B. It varies by design
• C. True
• D. Not enough information

Answer: (C)

Oversquare means the bore diameter is larger than the piston stroke. This setup shortens the piston travel relative to the bore, which helps the engine rev higher and allows bigger valve ports for better breathing at high rpm. Because oversquare is defined by bore greater than stroke, the statement is true. The other options don’t fit the definition: false contradicts it, not enough information isn’t necessary here, and “it varies by design” conflicts with the standard meaning of oversquare.

Oversquare means the bore diameter is larger than the piston stroke. This setup shortens the piston travel relative to the bore, which helps the engine rev higher and allows bigger valve ports for better breathing at high rpm. Because oversquare is defined by bore greater than stroke, the statement is true. The other options don’t fit the definition: false contradicts it, not enough information isn’t necessary here, and “it varies by design” conflicts with the standard meaning of oversquare.