Ya, give us "the rest of the story", 6V, 8V, 12V. The 2 stroke Detroit is not what some folks think of when talking about 2 stroke engines. Unlike a 2 stroke weedwhip/chainsaw/leafblower where fuel and oil are premixed, the Detroit's have/had an oil sump, camshaft, valve in head design, similar to a 4 stroke engine and burned pure air and pure fuel. The main difference is that the 2 stroke Detroits were supercharged (blown) and the blower forced combustion air into the cylinder through ports in the cylinder wall. Each downstroke of the piston is a power stroke and each upstroke is an exhaust stroke. Intake air is through the port, exhaust is through the tulip valves in the head. The injectors are "unit injectors", no high pressure injection pump was used, the injector was mechanical and camshaft actuated, the high pressure was created inside the injector body with each stroke of the cam/injector. A low pressure transfer pump was used to pull fuel from the fuel tank, that pump was gear/shaft driven on the engine and supplied a continuous flow of cooling fuel to the injectors.
