It may seem hard to believe someone would neglect a classic Porsche for decades, but it happens more often than you think. This 1960s 912, for instance, was parked in 1979 and didn't get proper TLC ...
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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