Porsche 917/30 Spyder

The Porsche 917/30 Spyder owed its outstanding performance to its twelve-cylinder twin-turbo engine. Unlike the strictly regulated European motorsport series, the CanAm series placed no restrictions on technicians' ingenuity in terms of weight or displacement limits. The team supporting the Porsche race engine designer, Hans Mezger, was therefore able to dig deep into its box of tricks to ensure that the twelve-cylinder turbo engine of the 917/30 steadfastly produced 1,100 to 1,400 hp and a m