Building an engine so powerful it got banned in not one, but two series, takes some doing. But Porsche did just that with the Type 912. How?

The Porsche 917 is one of the most desirable ... That naturally aspirated flat-12 is one of the best-sounding race engines around. From the driver's seat, it seems all you can hear is intake ...

Porsche wants the engine solution to justify the price tag. That means, according to author Georg Kacher, a 3.9-liter, quad-turbo flat-eight engine with 650 horsepower. Build materials are still ...