"3 valves per cylinder design" . . "multi-valve engines" . . . "5 valves x cyl." . . "three valves" . "24 valve" . "five valve" . "64v" . "16 valves" . "20V" . "4-valves per cylinder" . "40v" . . "40-valve" . "Multi-valve" . "12" . "four valves-per-cylinder" . "4 valves x cylinder" . "32-valve" . "3 valves per cylinder" . "12V" . "4-valves per cyl" . "4- valves" . "4V/cyl." . "32V" . "4 Valve" . "32 valve" . "four valves per cylinder" . "6V" . "15v" . "valves" . "four-valve" . "twenty valve" . "4 valves x cyl." . "16-valve head" . "2, 3 or 4 valves per cylinder" . "12-valve" . "8v" . "four-valve-per-cylinder" . . "4V" . "30v" . "20-valve" . "20 valve" . "10-valve" . "three-valve" . "3 valves x cyl." . "32" . "24-valve" . "five valves per cylinder" . "2 or 4 valves per cylinder" . "4 valves" . "16 valve" . . "Multi-valve" . "three valves per cylinder" . "60-valve" . "4 valves/cyl." . "24 valves" . "five valves" . . "16-valves" . "12 valves" . "32v" . "4 valve" . "32 valve" . "4 valves/cyl" . . "20v" . "30 valves" . . "4-valve-per-cylinder" . "24-valves" . "16V" . "six-valve" . "8V" . "4-valve cylinder head" . "four valve" . "12 valve" . "four" . "24V" . "4 valves per cyl." . "Eight-valve" . "32 valves" . "2 valves x cyl." . . . "8 valves per cylinder" . "four-valves-per-cylinder" . "24v" . "four per cylinder" . "5 valve" . "2 valves per cylinder" . "four-valve head" . "3-valve" . "16v" . "16 valve" . . "20 valves" . . "8 valve" . "three-valve-per-cylinder" . "multiple valves" . "valve" . "5-valve" . "24-valve design" . "quattrovalvole" . . "16" . "SOHC" . "4-valve" . "three poppet valves per cylinder" . "4 valves / cyl." . . "multi valve" . "16 valves" . "3 valves" . "4-valves" . "12v" . . "multi-valve" . "four valves" . . "eight-valve" . "4 valves x 6 cyl." . "16-valve" . "6/12V" . "3 valve" . "4-valve/cyl" . "sixteen valve" . . "8-valve" . "4-valve per cylinder" . "two intake valves per cylinder" . "four valve per cylinder" . "4 valves per cylinder" .