Morning Tonic: Porsche Junior Tractor

Built from the late ’30s into the early ’60s, the Porsche Junior was a diesel-powered light-duty tractor that made a torquey 14 horsepower from a single cylinder.

Like the Volkswagen Beetle (also designed by Dr. Porsche), the Junior concepts were well ahead of their time:

The Porsche diesel engine design with its unique air-cooled feature was just not quite ready for production at that time [1934]. Through numerous tests this design let to a fully developed air-cooled diesel engine with a power range from 14 hp to 55 hp. By the early 1950s Prof. Dr. F. Porsche had designed 4 basic models, 1 cyl., 2 cyl., 3 cyl., and 4 cyl. versions, all have individual and interchangeable cylinders and heads. Another interesting fact is, that Prof. Dr. F. Porsche also had a 4-wheel drive tractor on the drawing board as early as 1946.

The Junior is the single-cylinder model; “Standard,” “Super,” and “Master” designations each denote an additional cylinder, up to four.

Quite a few Porsche-Diesel tractors have been restored. Lovely!