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there are two ways to increase the piston displacement. either increase the bore or increase the length of the stroke. each method has its drawbacks. if you increase the bore too much then heat dissipation is affected and piston will not be cooled properly as the piston cools down by transmitting the heat to cylinder walls. on the other hand if we increase the length too much then the connecting rod will undergo excessive dynamic stresses and angularity issues. hence it is wise to have an equal bore and stroke which is a square engine

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13y ago

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