The Porsche 934 was introduced in 1976 as a racing version of the turbocharged 930, built to compete in Group 4. The wiry thing you see above is also a Porsche 934, only this wasn't built to take on ...

For the highest revving street-legal 6-cylinder engine currently for sale, head over to Porsche to sample its screaming 4.0L flat-6.

Formula 1 has long prided itself on being the pinnacle of motorsport technology, but has a growing manufacturer interest in ...