Maximum power from a race motor at 5k? If it's a diesel, why not? And since Audi's latest attempt to conquer the endurance-racing world is just such a mill, the twelve-cylinder 5.5L torque-monster in the brand-spankin'-new, never-been-raced R10 that's due to debut at Sebring. Ward's has an inside look at the engine. Head on over and check it.