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Short stroke vs. long stroke

6.2K views 8 replies 8 participants last post by  trevor  
oversquare (larger bore than stroke) = high revving with lower torque (most car engines)
undersquare (larger stroke than bore) = lower revving with higher torque (most diesel truck engines, i.e. cummins 5.9 and 6.7 inline 6)

A high revving bullet bike has a very large bore compared to the storke.