Cylinder Head DP 1600cc Complete AA

AA PERFORMANCE. EACH. Compete 1600 Dual Port Head. With valves and springs. Valves : Intake 35.5mm Exhaust 32mm. Spark Plug Hole : 14mm x 3/4". Made from an AA 500 Series Casting it comes STD with: Clean flowing cooling vanes, for maximum cooling through the head, and around the intake ports for increased HP and over all cooling. A modernized Combustion chamber, for increased head flow & performance. A second Full Fin, so you can Fly cut your heads deeper to achieve almost any desired Head CC volume needed. Blocked off rocker stud bosses, to eliminate the O-ring and stop possible oil leaks. Allows the use of long reach 3/4 Inch Spark Plugs, to reduce the chance of cracking between the valve seat and plug.