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New Audi R15 wins Sebring 12 Hour, Porsche's legendary 917 turns 40!


Click above for a high-res gallery of the Porsche 917

Forty years ago this week at the Geneva Motor Show, Porsche rolled out what would become one of the most successful racing cars of all time. The Porsche 917 was born of new FIA homologation rules that required a "production" run of at least 25 examples before the car could take to the track. Over the next several years, 917 variants in several different body styles including short- and long-tail closed coupes and open-top "spyder" models would win wherever they went, including Le Mans, Daytona, Sebring and the Can-Am series.

All 65 examples that were ultimately built were powered by an air-cooled flat twelve-cylinder. The first coupes used a 4.5-liter normally aspirated 520 horsepower engine while the penultimate example was the 917/30 spyder. This 1,200-hp turbocharged beast swept Can-Am in the hands of Mark Donohue, bringing the series to a climax in 1973 before the combination of the economy and Middle East oil embargo caused most major teams to withdraw. Seven of the 917s can now be seen in Porsche's new Stuttgart museum.

Published Mar 23 2009, 11:38 AM by bbaker
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About the Authors

Dave Wooldridge, Publisher

Dave has spent nearly 25 years reporting on and working with engine builders and their parts and equipment suppliers to promote and enhance the engine rebuilding aftermarket.

Doug Kaufman, Editor

For the past 20 years, Doug Kaufman has covered the various segments of the
automotive aftermarket. Those years have taught him something: you need help
to cover an industry. Get too close to it and you lose track of the big
picture...stay too removed and you miss the detail.

Brendan Baker, Senior Editor

Brendan Baker has spent the better part of 24 years in the automotive aftermarket and racing industry. He has spent the last 11 years in publishing and has been the Managing Editor of Engine Builder magazine for the past five years until recently being named Senior Editor.