Porsche’s air-cooled flat-six engine
This story originally appeared in Volume 21 of Road & Track.
Porsche’s air-cooled flat-six still has life in it. To honor the 60th birthday of the 911’s engine, Ruf Automobile created the Tribute, a carbon-chassis car shaped like a 911. It sports, of course, an air-cooled flat-six out back. “We’re combining modern engine technology with the good old air-cooled,” Alois Ruf Jr. tells Road & Track. Ruf iterated on the classic Hans Mezger–designed air-cooled flat-six, enhancing that decades-old creation with 21st-century technology. This new Ruf engine displaces 3.6 liters and with twin turbochargers produces 543 hp and 553 lb-ft of torque. It also meets today’s emissions standards and promises the legendary durability of the air-cooled Porsche flat-six.
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