CREATE TABLE table_51823 ("Name" TEXT, "Code" TEXT, "Capacity" TEXT, "Type" TEXT, "Power" TEXT, "Torque" TEXT, "Top speed" TEXT, "Combined consumption" TEXT)

What is the torque of the engine with a type 16 valves dohc and a code k4m hi-flex?
SELECT "Torque" FROM table_51823 WHERE "Type" = '16 valves dohc' AND "Code" = 'k4m hi-flex'
SELECT "Torque" FROM "table_51823" WHERE "Code" = 'k4m hi-flex' AND "Type" = '16 valves dohc'