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Porsche 906

Porsche 906
Photo: Lothar Spurzem · CC BY-SA 2.0 de · source ↗

The Porsche 906, sold as Carrera 6, with a 2-litre flat six-cylinder Type 901 engine compared to the F4 in its predecessor Porsche 904 Carrera GTS, is a Group 4 Sports Car from Porsche announced in January 1966 for the 1966 World Sportscar Championship. The street-legal racing car met homologation requirements of the FIA like space for luggage and carrying a spare wheel (as did the Porsche 917 in 1969). When the required minimum number of at the time 50 cars was produced, of 65 in total, homologation came into effect in May 1966. In earlier races, the already numerous 906 had to be entered in the Group 6 Sports Prototype class. Later, the factory also entered modified 906 as prototypes, especially as lightweight hillclimbing spyder, with current Formula 1 suspension parts and wheels, eight cylinder engine, or long tail for Le Mans. Already by August 1966, new prototype class chassis were called Porsche 910. Together with results of the 904, the 910 and even the 911, the 906 won all 2 litre classes of the 1966 World Sportscar Championship and the 1966 European Hill Climb Championship. Competition from the comparable Ferrari Dino 206S, also intended as Gr.4 sportscar as indicated by the S, materialized only in the Gr. 6 prototype classes as Ferrari built only 18. Privateers in 906 helped Porsche win also the 1967 World Sportscar Championship 2 litre sportscar class which was discontinued in 1968.

Text from Wikipedia (CC BY-SA 4.0).

Predecessor: Porsche 904 · Successor: Porsche 910

All Porsche 906 data: UK builds, safety, recalls, model years →

History

Prior to the Porsche 906 was the 904 which achieved many racing victories. At the age of 28, Ferdinand Piëch, the grandson of Ferdinand Porsche was given the important job of being in charge of the development of the new Porsche racing cars. His goal for recreating the 904 to the new 906 was to make it as lightweight as can be. This would mean stripping all of the heavy steel from the body and using unstressed fiberglass instead. Constructing the new car with the fiberglass helped with things such as structural support as well as looks because it was all placed by hand instead of having an uneven paint job done to it. The finished product weighed around 580 kg (1,280 lbs), which was around 250 lbs lighter than the 904. This was not only due to the body, but also the engine was much lighter. Normally the car would be fitted with a 901/20 6-cylinder with carburetors that was making 210 horsepower at 8,000 rpm. On occasion though there would be times when it was replaced with a 8-cylinder when the car was being used by the factory racing team. This would help in events such as hillclimbing, when the altitude would increase, against the Ferrari Dino in the European championship. Racing history. The 906 had several racing careers, with the one as Group 4 sportscar up to 2000cc raced by dozens of customers being the one it was designed for, the most prolific (one overall World Sportscar Championship race win, at the 1966 Targa Florio) and the longest. The 906 helped Porsche win the 1966 World Sportscar Championship in both 2-litre-classes with a perfect score of 42 points, the International Manufacturers Championship for prototypes over Ferrari, and the International Sports Car Championship Division II (1301 to 2000cc) over Alfa Romeo and Lotus, as the Ferrari Dino 206S neve

Construction

Unlike previous racing Porsches, the 906's body was tested in a wind tunnel, resulting in a top speed of 280 km/h (170 mph) at Le Mans, quite fast for a 2-liter engine car. At the time it showed a close resemblance to future Porsche racing cars. As in the Mercedes-Benz 300SL, gull-wing doors were fitted, and the mid-ship mounted engine was covered with a large plexiglas cover. The Porsche 906 was fitted with an 901 engine that actually came from the Porsche 911R just with a few modifications done to it. These changes included some exotic metals (titanium) in the connecting rods and the crank case (magnesium) to help the car perform at a higher level. In order to save money, spare suspension components produced in advance for a possible new series of Porsche 904 had to be used for the 906, along with big 15-inch wheels. Yet, Formula One used lighter 13-inch wheels, and Porsche had already used Team Lotus suspension parts in earlier years. The wheels were bolted on with 5 nuts as in a road car, which cost time in pitstops compared to a single central nut. Porsche had reused a lot of different parts on the 906 like the suspension from the 904 and the engine from the 911, but they had also utilized the 5 speed manual gearbox that came from the Porsche 911. To take advantage of the lighter wheels and F1 tyres, the Porsche 910 was developed and entered in mid-season of 1966, starting with the hillclimb from Sierre to Crans-Montana in Switzerland. == References ==

Sections adapted from Wikipedia (CC BY-SA 4.0); text is shortened. Read the full article for the complete history and citations.

Specifications

name
Porsche 906 Carrera 6
Manufacturer
Porsche
Production
1966
Designer
Ferdinand Piëch, Erwin Komenda
Class
Group 4 , Group 6
Layout
RMR layout
Engine
2.0L (1991cc) flat 6
Predecessor
Porsche 904
Successor
Porsche 910
Kerb weight
580 kg (1,280 lb)

Specification summary from Wikipedia (CC BY-SA 4.0). Measured facts from Wikidata (CC0). Check the linked sources for citations.

More photos

Porsche 906
Mr.choppers · CC BY-SA 3.0 · source ↗
Porsche 906
David Merrett from Daventry, England · CC BY 2.0 · source ↗

Sources

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