With Piëch now firmly at the reins of the R&D department (which, at the time, also encompassed racing car design), the decision was made in late July to rapidly build a completely new car, in the hopes of upstaging Ferrari’s Dino, at the upcoming Ollon-Villars Hill Climb—a mere four weeks away! Casting aside the 904’s ladder-style frame—and arguably the last vestige of Butzi’s imprint on the racing department—Piëch opted for a new, lightweight, tubular spaceframe chassis that featured a longer wheelbase and wider track that would result in a racecar weighing in at just 1170-lb, thanks to its fiberglass spyder bodywork, which would be bonded to the chassis for increased stiffness. Interestingly, Piëch and his team also wanted to go with lower profile 13-inch alloy wheels—like those used on the Dino and many Formula One cars of the time— but due to the limited amount of days before the race, they didn’t have time to make or custom order any. The solution was found at the German Grand Prix, on July 31, when Porsche bought a set of 13-in wheels, with uprights and suspension pieces from Colin Chapman and Lotus!
After a record 3-week thrash to design and construct the 240-hp, Flat-8 powered Ollon-Villars car, the new machine was taken to the Weissach test track on August 25, where it proved to be at least as good as the best iteration of the 904/8 Berg Spyder. While tire miscues hampered it at the Ollon-Villars race, resulting in Scarfiotti claiming the 1965 title, the Ollon-Villars car would go on to ultimately claim the 1966 championship, with Gerhard Mitter driving, but perhaps more importantly it would lay the ground work for an entirely new line of Porsche sports racers that would follow.
Enter the Carrera 6
Porsche’s early plans for the 1966 FIA Sports Car series had revolved around using the new Type 901, Flat-6 engine, developed for the 911, in the 904 chassis. A handful of these were built in 1965, but when the FIA lowered the homologation requirement for the 1966 season down to just 50 examples, Piëch saw an opportunity to compete with a more “purpose-built” sports racer, along the lines of the Ollon-Villars car. As such, the new 906 project would feature a tubular spaceframe evolution of the Ollon-Villars car, bodied as a coupe and mated to a Type 901/20 racing version of the 2-liter, Flat-6 capable of producing 210-hp at 8,000 rpm. Introduced as the Carrera 6 at the 1966 Daytona 24 Hours, the new 906 would rack up class victories at Daytona, Sebring, Monza, Spa and the Nürburgring, as well as an overall victory in that year’s punishing Targa Florio.
While the Carrera 6 was taking the FIA 2-liter prototype category by storm, the Ollon-Villars car (now designated 906-010 and updated into a coupe) was coming into its own on the 1966 Hill Climb Championship. Mitter racked up a series of wins at places like Rossfeld, Mont Ventoux and Trento-Bondone, before his car was upgraded with Bosch mechanical fuel injection, which Porsche had just started testing in endurance races that year. At Sestiére, Scarfiotti won, but for the July 31 hill climb at Freiburg, Porsche handed Mitter a new weapon.