vineri, 6 mai 2011

Porsche 911 - World Of Classic Cars - Rank 10

Porsche 911 classic

The 911 can trace its roots back to sketches drawn by Ferdinand "Butzi" Porsche in 1959. The Porsche 911 classic was developed as a much more powerful, larger, more comfortable replacement for the Porsche 356, the company's first model. The new car made its public debut at the 1963 Frankfurt Motor Show (German: Internationale Automobil-Ausstellung). The car presented at the auto show had a non-operational mockup of the 901 engine, receiving a working one in February 1964.


It originally was designated as the "Porsche 901" (901 being its internal project number). 82 cars were built as 901s. However, Peugeot protested on the grounds that in France it had exclusive rights to car names formed by three numbers with a zero in the middle. So, instead of selling the new model with another name in France, Porsche changed the name to 911. Internally, the cars part numbers carried on the prefix 901 for years. Production began in September 1964, the first 911s reached the US in February 1965 with a price tag of US$6,500.
Porsche 911L FIA (1968)


The earliest edition of the 911 had a 130 PS (96 kW; 128 hp) flat-6 engine, in the "boxer" configuration like the 356, air-cooled and rear-mounted, displaced 1991 cc compared with the 356's four-cylinder, 1600 cc unit. The car had four seats although the rear seats were very small, thus the car is usually called a 2+2 rather than a four-seater (the 356 was also a 2+2). It was mated to a four or five-speed manual "Type 901" transmission. The styling was largely by Ferdinand "Butzi" Porsche, son of Ferdinand "Ferry" Porsche. Erwin Komenda, the leader of the Porsche car body construction department, was also involved in the design.
The 356 came to the end of its production life in 1965, but there was still a market for a 4-cylinder car, particularly in the USA. The Porsche 912, introduced the same year, served as a direct replacement, offering the 356's 4-cylinder, 1600 cc, 90 hp (67 kW) engine inside the 911 bodywork.
In 1966 Porsche introduced the more powerful 911S, the engine's power raised to 160 PS (118 kW; 158 hp). Alloy wheels from Fuchs, in a distinctive 5-leaf design, were offered for the first time. In motorsport at the same time, installed in the mid-engined Porsche 904 and Porsche 906, the engine was developed to 210 PS (154 kW).
Porsche 911 S (1967)

In 1967 the Targa (meaning "shield" in Italian) version was introduced as a "stop gap" model. The Targa had a stainless steel-clad roll bar, as Porsche had, at one point, thought that the NHTSA would outlaw fully open convertibles in the US, an important market for the 911. The name "Targa" came from the Targa Florio sports car road race in Sicily, Italy in which Porsche had notable success, with seven victories since 1956, and four more to come until 1973. This last win in the subsequently discontinued event is especially notable as it was scored with a 911 Carrera RS against prototypes entered by Italian factories of Ferrari and Alfa Romeo. The road going Targa was equipped with a removable roof panel and a removable plastic rear window (although a fixed glass version was offered alongside from 1968).

The 110 PS (81 kW; 108 hp) 911T was also launched in 1967 and effectively replaced the 912. The staple 130 PS (96 kW; 128 hp) model was renamed the 911L. The 911R had a very limited production (20 in all), as this was a lightweight racing version with thin aluminium doors, a magnesium crankcase, twin-spark cylinder heads, and a power output of 210 PS (154 kW).
In 1969 the B series was introduced: the wheelbase for all 911 and 912 models was increased from 2211 to 2268 mm (87 to 89¼ in), an effective remedy to the cars nervous handling at the limit. The overall length of the car did not change: rather, the rear wheels were relocated aft. Fuel injection arrived for the 911S and for a new middle model, 911E. A semi-automatic Sportomatic model, composed of a torque converter, an automatic clutch, and the four speed transmission, was added to the product lineup. It was canceled after the 1980 model year partly because of the elimination of a forward gear to make it a three-speed.
The 2.2 L 911E was called "The secret weapon from Zuffenhausen". Despite the lower power output of the 911E (155 PS (114 kW; 153 hp)) compared to the 911S (180 PS (132 kW; 178 hp)) the 911E was quicker in acceleration up to 160 km/h (100 mph).
Porsche 911 S (1972)

The 1972–1973 model years consisted of the same models, but with a new, larger 2341 cc (142 in³) engine. This is universally known as the "2.4 L" engine, despite its displacement being closer to 2.3 litres. The 911E and 911S used mechanical fuel injection (MFI) in all markets. For 1972 the 911T was carbureted, except in the U.S. and some Asian markets where emission regulations forced Porsche to equip the 911T with mechanical fuel injection. In January, 1973, US 911Ts were switched to the new K-Jetronic CIS (Continuous Fuel Injection) system from Bosch.
With the power and torque increases, the 2.4 L cars also got a newer, stronger transmission, identified by its Porsche type number 915. Derived from the transmission in the Porsche 908 race car, the 915 did away with the 901/911 transmission's "dog-leg" style first gear arrangement, opting for a traditional H pattern with first gear up to the left, second gear underneath first, etc.
911S models also gained a discreet spoiler under the front bumper to improve high-speed stability. With the cars weighing only 1050 kg (2315 lb), these are often regarded as the best classic mainstream 911s. For racing at this time, the 911 ST was produced in limited numbers (the production run for the ST only lasted from 1970 to 1971). The cars were available with engines of either 2466 cc or 2492 cc, producing 270 PS (199 kW; 266 hp) at 8000 rpm. Weight was down to 960 kg (2166 lb). The cars had success at the Daytona 6 Hours, the Sebring 12 Hours, the 1000 km Nürburgring and the Targa Florio.
Porsche 911 S (1973)

911 Carrera RS

These models, valued by collectors, are considered by many to be the greatest classic 911s of all-time. RS stands for Rennsport in German, meaning race sport in English. The Carrera name was reintroduced from the 356 Carrera which had itself been named after Porsche's class victories in the Carrera Panamericana races in Mexico in the 1950s. The RS was built so that Porsche could enter racing formulae that demanded that a certain minimum number of production cars were made. Compared with a standard 911S, the Carrera 2.7 RS had a larger engine (2687 cc) developing 210 PS (150 kW; 210 hp) with MFI, revised and stiffened suspension, a "ducktail" rear spoiler, larger brakes, wider rear wheels and rear fenders. In RS Touring form it weighed 1075 kg (2370 lb), in Sport Lightweight form it was about 100 kg (220 lb) lighter, the saving coming from the thin-gauge steel used for parts of the bodyshell and also the use of thinner glass. In total, 1580 were made, comfortably exceeding the 500 that had to be made to qualify for the vital FIA Group 4 class. 49 Carrera RS cars were built with 2808 cc engines producing 300 PS (221 kW).
Porsche 911S FIA (1972)

In 1974, Porsche created the Carrera RS 3.0 with K-Jetronic Bosch fuel injection producing 230 PS (169 kW). It was almost twice as expensive as the 2.7 RS but offered a fair amount of racing capability for that price. The chassis was largely similar to that of the 1973 Carrera RSR and the brake system was from the Porsche 917. The use of thin metal plate panels and a spartan interior enabled the shipping weight to be reduced to around 900 kg (1984 lb).
The Carrera RSR 3.0 was sold to racing teams, and scored outright wins in several major sports car races of the mid 1970s. Also, a prototype Carrera RSR Turbo (with 2.1 L engine due to a 1.4x equivalency formula) came second at the 24 Hours of Le Mans in 1975 and won several major races, a significant event in that its engine would form the basis of many future Porsche attempts in sportscar racing. Save for the earlier Porsche 917, it can be regarded as Porsche's start of its commitment to turbocharging also in road cars.

Porsche 911 Carrera RS (1973)

2.7- series

Model year 1974 saw three significant changes. First, the engine size was increased to 2687 cc giving an increase in torque. Second, was the introduction of impact bumpers to conform with low speed protection requirements of US law, these bumpers being so successfully integrated into the design that they remained unchanged for 15 years. Thirdly, the use of K-Jetronic CIS Bosch fuel injection in two of the three models in the line up— the 911 and 911S models, retaining the narrow rear arches of the old 2.4, now had a detuned version of the RS engine producing 150 PS (110 kW; 150 hp) and 175 PS (129 kW; 173 hp), respectively. The Carrera 2.7 retained the same 210 bhp MFI engine, suspension, brakes etc. as the 1973 Carrera RS. It weighed in at 1075 kg, the same as the RS Touring. The US market Carrera only had the 165 bhp CIS engine owing to emission regulations. The 930 Turbo was introduced in 1975 (see below). The Carrera 3.0 was introduced in 1976 with what was essentially the Turbo's 2994 cc engine minus the turbocharger, and with K-Jetronic CIS although now developing 200 PS (150 kW; 200 hp).
Also produced in the 1976 model year for the U.S. market, was the 912E, a 4-cylinder version of the 911 like the 912 that had last been produced in 1969. It used the I-series chassis and the Volkswagen 2.0 engine from the Porsche 914. In all, 2099 units were produced. In 1976 the front-engine Porsche 924 took this car's place for the 1977 model year and beyond.

Porsche 911 Carrera RS 2.7 (1973
Porsche 911 Carrera RS 2.7 (1973)

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