QI WAS always told that shortstroke engines rev harder, but have a shorter life, and long-stroke engines have more low-down grunt or torque. Is there an optimum bore/ stroke ratio for internal-combustion engines? Phil Hiddle
horses for courses. Shorterstroke engines will rev harder and will be better at high speed, but will wear at a faster rate. Long-stroke engines produce better low-end torque, but don’t rev as hard.