Difference between revisions of "Honda NR500"

Moreover, it quickly became apparent that this engine was really an eight-cylinder whose pistons had been "welded" in pairs to meet the rule prohibiting more than four cylinders in the 500cc class In fact, the pistons and bores had 3 cross section like a rectangle with semicircular ends, This ploy allowed the engine to run at over 20,000rpm, producing a power output equivalent to that of a two-stroke. The oval [[piston]] allowed for eight [[4-stroke cycle engine valves|valves]] per [[Cylinder (engine)|cylinder]] which generated more power due to the increased air / fuel mixture throughput and compression.