Without Turbo Charger

The engine has a fully enclosed crankcase ventilation system consisting of a nipple beside the camshaft cover. The crankcase gasses are evacuated through the hose dividing nipple in the camshaft cover, through a small-bore hose to the intake manifold and a large-bore hose to the throttle body where the gasses are mixed with the intake air and combusted in the engine. When the engine is running at idling speed, the crankcase gasses are evacuated through the small-bore hose and when the engine is loaded, the crankcase gasses are evacuated through the large-bore hose, which is connected upstream of the butterfly in the throttle housing. The hoses and their connections are sized to give satisfactory evacuation of the crankcase gasses from the engine under any operating conditions. To avoid icing, the system is water heated.