The inlet manifold has inlet pipe sections (2A, 2B etc.) forming two independent systems for each cylinder. There are manifold pipe sections (6,7) combining the inlet pipes.- DETAILED DESCRIPTION - A fastening section (12) of the cylinder head side has several openings (8A, 8B etc.) formed on the side of the independent sections. The fastening section (13) on the air filter side has two openings (6A, 7A). All parts are combined in one casting.The throttle valve includes turbulence control valve and inlet throttle valve
