It goes without saying that Porsche’s 356 is a pretty simple car. The type-616 aircooled flat-four is mostly a self-contained unit, and removing one from the back of a 356 isn’t all that complicated.

Vintage Porsche cars can be difficult to maintain, rebuild, and work on, especially if the car is powered by a unique engine that was only used in a small number of Porsches. During the early days of ...