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The flat-six engine that defined an entire brand
Discover how Porsche's air-cooled flat-six boxer engine, from 1963-1998, defined the 911 and became the brand's signature ...
Flat engines are horizontally-opposed piston engines, and this group includes Boxer engines, but not opposed-piston engines like the Cummins 14.3L Advanced Combat Engine (ACE) designed to power tanks.
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