The bore of a cylinder (along with the stroke and the number of cylinders in the engine) is what determines displacement. Increasing the bore can help boost the horsepower of your engine, which is ...

A four-stroke (or four-cycle) engine is so called because in the process of producing power, the piston passes up and down the bore four times. These strokes or events are the induction, compression, ...

‘Mirror bore’ coating was also used by the last-gen GT500. Update: Nissan got back to us with comment about weight and friction reduction. According to Jesus Ruis, New Model Engineering manager, the ...