The Volkswagen Type 3 Motor, also known as the pancake motor (a name it shares with the Type 4 motor), is basically a VW Type 1/ Type 2 motor with a rearranged cooling system.As with Type 1 motors, the engine is composed of 4 horizontally opposed finned cylinders which are cooled by air. The engine has 8 vavles actuated by a central camshaft and pushrods. The engine is cooled by the a constant supply of rapidly moving air as opposed to the flow of coolant found in most car motors. Oil also plays a large part in cool the motor, and VW air-cooled motors all have an oil cooler. Due to its air-cooled nature the Volkswagen engine lacks a whole system of moving parts, increasing it reliablity. In the T3 motor the fan is attached to the end of the crankshaft, where the fan pulley is normally attached on the T1/Beetle. The fan rotates at the same speed as the engine and drives a generator via a pulley and a belt. The air is vented from the fan back across the engine over the cylinders and through a doghouse style oil