Try the Neunelfer!
The Porsche 911 (pronounced Nine Eleven or in German: Neunelfer) is a two-door 2+2 high performance rear-engined sports car introduced in September 1964 by Porsche AG of Stuttgart, Germany. It has a rear-mounted flat-six engine and originally a torsion bar suspension. The car has been continuously enhanced through the years but the basic concept has remained unchanged. The engines were air-cooled until the introduction of the 996 series in 1998.
The 911 has been raced extensively by private and factory teams, in a variety of classes. It is among the most successful competition cars. In the mid-1970s, the naturally aspirated 911 Carrera RSR won world championship races including Targa Florio and the 24 Hours of Daytona. The 911-derived 935 turbo also won the 24 Hours of Le Mans in 1979. Porsche won the World Championship for Makes in 1976, 1977, 1978, and 1979 with 911-derived models.
In a 1999 poll to determine the Car of the Century, the 911 was fifth. It is one of two in the top five that had remained continuously in production (the original Beetle remained in production until 2003). The one millionth example was manufactured in May 2017 and is in the company's permanent collection.
911 nomenclature
Although Porsche has used internal code numbers for each series of the 911, all models have been marketed and sold as 911s. The model series and associated internal codes are as follows:
911 (1964–1989)
930 (1975–1989) the turbocharged version
964 (1989–1994)
993 (1995–1998) the last air-cooled 911
996 (1999–2004) all-new body and water-cooled engines
997 (2005–2012)
991 (2012–2019) all-new body
992 (2019–)
A series letter is used by Porsche to indicate the revision for production cars, usually on an annual basis.[citation needed]
911s have also been categorized into families based on body styles or engine enhancements:
911 Carrera: including the Carrera, Carrera S, Carrera 4, Carrera 4S, Carrera GTS, Carrera 4 GTS, Carrera T. All are available as cabriolets except the Carrera T.
911 Targa: including the Targa 4, Targa 4S, Targa 4 GTS.
911 Turbo: including the Turbo, Turbo S. All are available as cabriolets.
GT3/GT3 RS: a track-focused version of the 911 Carrera with a naturally aspirated engine and rear wheel drive. No cabriolet variant has ever been produced to date. A grand touring version featuring comfort-oriented options is called the GT3 Touring, and is available for the 991 and 992 generations.
GT2/GT2 RS: the highest performance derivative, a track-focused version based on the Turbo with rear wheel drive. No cabriolet version has ever been produced to date. Now available as an RS (Renn Sport) model only.
Air-cooled engines (1964–1998)
911, 911E, 911L, 911S, 911T
The 911 traces its roots to sketches drawn by Ferdinand "Butzi" Porsche in 1959. The Porsche 911 was developed as a more powerful, larger and a more comfortable replacement for the 356, the company's first model. The new car made its public debut at the 1963 Frankfurt Motor Show[8] (German: Internationale Automobil-Ausstellung).[9] The car was developed with the proof-of-concept twin-fan Type 745 flat-six engine, but the car presented at the auto show had a non-operational mockup of the single-fan 901 engine, receiving a working unit in February 1964.
It originally was designated as the "Porsche 901" (901 being its internal project number). A total of 82 cars were built as which were badged as 901s. However, French automobile manufacturer 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. Instead of selling the new model with a different 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,[9] with the first 911s exported to the US in February 1965.
The first models of the 911 had a rear-mounted 130 hp (97 kW)[1] Type 901/01 flat-6 engine, in the "boxer" configuration like the 356, the engine is air-cooled and displaces 1,991 cc (2.0 L) as compared to the 356's four-cylinder, 1,582 cc (1.6 L) unit. The car had four seats although the rear seats were small, thus it is usually called a 2+2 rather than a four-seater (the 356 was also a 2+2). A four or five-speed "Type 901" manual transmission was available. The styling was largely penned by Ferdinand "Butzi" Porsche, son of Ferdinand "Ferry" Porsche. Butzi Porsche initially came up with a notchback design with proper space for seating two rear passengers but Ferry Porsche insisted that the 356's successor was to use its fastback styling. 7 prototypes were built based on Butzi Porsche's original design and were internally called the Porsche 754 T7. Erwin Komenda, the leader of the Porsche car body construction department who initially objected, was also involved later in the design.
The 911-based 912, powered by a flat-4 engine (1967)
Production of the 356 ended in 1965, but there was still a market for a 4-cylinder car, particularly in the US. The 912, introduced in the same year, served as a direct replacement, offering the de-tuned version of 356 SC's 4-cylinder, 1,582 cc (1.6 L), 90 hp (67 kW; 91 PS) boxer four Type 616/36 engine inside the 911 bodywork with Type 901 four-speed manual transmission (a 5-speed manual transmission was optional).
In 1966, Porsche introduced the more powerful 911S with Type 901/02 engine having a power output of 160 PS (120 kW; 160 hp). Forged aluminum alloy wheels from Fuchsfelge, with a 5-spoke design, were offered for the first time. In motorsport at the same time, the engine was developed into the Type 901/20 and was installed in the mid-engine 904 and 906 with an increased power output of 210 PS (150 kW; 210 hp), as well as fuel injected Type 901/21 installed in later variants of the 906 and 910 with a power output of 220 PS (160 kW; 220 hp).
In August 1967, the A series went into production with dual brake circuits and widened (5.5J-15) wheels still fitted with Pirelli Cinturato 165HR15 CA67 tyres.,[11] and the previously standard gasoline-burning heater became optional. The Targa (meaning "plate" in Italian) version was introduced. The Targa had a stainless steel-clad roll bar, as automakers believed that proposed rollover safety requirements by the US National Highway Traffic Safety Administration (NHTSA) would make it difficult for fully open convertibles to meet regulations for sale 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 several victories until 1973. The last win in the subsequently discontinued event was scored with a 911 Carrera RS against prototypes entered by 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 from 1968).
The 911 R (1967)
The 110 PS (81 kW; 110 hp) 911T was also launched in 1967 with Type 901/03 engine. The 130 PS (96 kW; 130 hp) model was renamed the 911L with Type 901/06 engine and ventilated front disc brakes. The brakes had been introduced on the previous 911S. The 911R with 901/22 engine had a limited production (20 in all), as this was a lightweight racing version with thin fiberglass reinforced plastic doors, a magnesium crankcase, twin overhead camshafts, and a power output of 210 PS (150 kW; 210 hp).
A clutchless semi-automatic Sportomatic model, composed of a torque converter, an automatic clutch, and the four-speed transmission was added in Autumn 1967. It was canceled after the 1980 model year[15] partly because of the elimination of a forward gear to make it a three-speed.
The B series went into production in August 1968, replacing the 911L model with 911E with fuel injection. It remained in production until July 1969. The 911E gained 185/70VR15 Pirelli Cinturato CN36, and 6J-15 wheels.
The C series was introduced in August 1969 with an enlarged 2.2-litre engine (84 mm bore x 66 mm stroke). The wheelbase for all 911 and 912 models was increased from 2,211–2,268 mm (87.0–89.3 in), to help as a remedy to the car's nervous handling at the limit. The overall length of the car did not change, but the rear wheels were relocated further back. Fuel injection arrived for the 911S (901/10 engine) and for a new middle model, 911E (901/09 engine).
The D series was produced from Aug. 1970 to July 1971. The 2.2-litre 911E (C and D series) had lower power output of the 911/01 engine (155 PS (114 kW; 153 hp) at 6,200 rpm) compared to the 911S's Type 911/02 (180 PS (130 kW; 180 hp) at 6,500 rpm), but 911E was quicker in acceleration up to 160 kilometres per hour (99 mph).
The E series for 1972–1973 model years (August 1971 to July 1972 production) consisted of the same models, but with a new, larger 2,341 cc (2.3 L) engine. This is known as the "2.4 L" engine, despite its displacement being closer to 2.3 litres. The 911E (Type 911/52 engine) and 911S (Type 911/53) used Bosch mechanical fuel injection (MFI) in all markets. For 1972 the 911T (Type 911/57) was carbureted, except in the US and some Asian markets where the 911T also came with (MFI) mechanical fuel injection (Type 911/51 engine) with power increase over European models (130 hp) to 140 hp commonly known as a 911T/E.
With power and torque increase, the 2.4-litre cars also got a newer, stronger transmission, identified by its Porsche type number 915. Derived from the transmission in the 908 race car, the 915 did away with the 901 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. The E series had the unusual oil filler behind the right side door, with the dry sump oil tank relocated from behind the right rear wheel to the front of it in an attempt to move the center of gravity slightly forward for better handling. An extra oil filler/inspection flap was located on the rear wing, for this reason it became known as an "Oil Klapper", "Ölklappe" or "Vierte Tür (4th door)".
The F series (August 1972 to July 1973 production) moved the oil tank back to the original behind-the-wheel location. This change was in response to complaints that gas-station attendants often filled gasoline into the oil tank. In January 1973, US 911Ts were switched to the new K-Jetronic CIS (Continuous Fuel Injection) system from Bosch on Type 911/91 engine.
911S models also gained a small spoiler under the front bumper to improve high-speed stability. The cars weighed 1,050 kg (2,310 lb). The 911 ST was produced in small numbers for racing (the production run for the ST lasted from 1970 to 1971). The cars were available with engines of either 1,987 cc (2.0 L) or 2,404 cc (2.4 L) displacement, having a power output of 270 PS (200 kW; 270 hp) at 8,000 rpm. Weight was down to 960 kg (2,120 lb). The cars had success at the Daytona 6 Hours, the Sebring 12 Hours, the 1000 km Nürburgring, and the Targa Florio.
Porsche 911 Carrera RS 2.7 touring
RS stands for Rennsport in German, meaning race sport. 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 developed to meet motorsport homologation requirements. Compared to a standard 911S, the Carrera 2.7 RS had a larger engine (2,687 cc) developing 210 PS (150 kW; 210 hp) with Bosch (Kugelfischer) mechanical fuel injection, revised and stiffened suspension, a "ducktail" rear spoiler, larger brakes, wider rear wheels and rear fenders, to fit 185/70VR15 & 215/60VR15 Pirelli Cinturato CN36 tyres. In RS Touring form it weighed 1,075 kg (2,370 lb), in Sport Lightweight form it was about 100 kg (220 lb) lighter, the saving coming from thin gauge steel used for parts of the body shell and also the use of thinner glass. In total, 1,580 units were made, and qualified for the FIA Group 4 class. 49 Carrera RSR cars were built with 2,808 cc (2.8 L) engines rated at 300 PS (220 kW; 300 hp).
The 911 RSR
For the 1974 IROC Championship (which started in December 1973), 1973 Carrera RSR models were fitted with the 3.0 engine and a flat "whale tail" in place of the ducktail spoiler along with wide body panels and large tyres.
In 1974, Porsche developed the Carrera RS 3.0 with mechanical fuel injection rated at 230 PS (170 kW; 230 hp). Its price was almost twice that of the 2.7 RS, but it offered racing capability. The chassis was largely similar to that of the 1973 Carrera RSR and the braking system was from the 917 racing car. The use of thinner metal plate panels and a minimalist interior enabled its weight to be reduced to around 900 kg (2,000 lb).
The Carrera RSR 3.0 was sold to racing teams and scored wins in several major sports car races of the mid-1970s. Also, a prototype Carrera RSR Turbo (with 2.1-litre engine due to a 1.4x equivalency formula) came second at the 24 Hours of Le Mans in 1974 and won several major races, a significant event in that its engine would form the basis of many future Porsche attempts in sports car racing. This, and the earlier 917, was Porsche's commitment to turbocharger applications in its cars.
911 and 911S 2.7 (1973–1977)
There is a common misconception that all 911s built between 1974 and 1989 are 'G-series' cars. In fact, the G-series was only produced for the 1974 model year. It was followed by the H, J, K, and so on.
The 1974 model year brought many significant changes to the 911 to meet legislative requirements around the world for both impact safety and emissions. First, the engine size was increased to 2,687 cc achieving higher torque. Second, new impact bumpers conformed with low-speed protection requirements of US regulations. 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 2.7-litre engine rated at 150 PS (110 kW; 150 hp) and 175 PS (129 kW; 173 hp), respectively. The standard 911 version received an increase to 165 PS (121 kW; 163 hp) for Model Year 1976, which meant that starting from MY 1976, there was only a difference in power of 10 hp between the 911 and the 911S. The engine remained a K-Jetronic 2.7-litre. The 911S 2.7 engine was rated during the entire lifespan at 175 hp (130 kW; 177 PS).
Carrera 2.7 MFI and CIS (1974–1976)
The Carrera 2.7 model built for all markets, except for the United States, used the 210 PS (150 kW; 210 hp) RS 911/83 engine with Bosch mechanical fuel injection pump from the 1973 Carrera RS. These Carrera 2.7 MFI models were built from 1974 until 1976 and were mechanically identical to the 1973 Carrera RS. The Carrera 2.7 model produced for the North American markets, often referred to as the Carrera 2.7 CIS, was powered by the same 2.7-litre engine as the 911S which produced 175 PS (129 kW; 173 hp). The initial Carrera 2.7 models had the same welded-on rear RS flares, before switching to the SC stamped style rear flares during the middle of the 1974 production year. The Carrera 2.7 coupés weighed in at 1,075 kg (2,370 lb), the same weight as the 1973 Carrera RS Touring.
For the 1974 model year, the Carrera 2.7 was available with the "ducktail" rear spoiler first introduced with the 1973 Carrera RS. In the North American markets, the ducktail was standard equipment for the Carrera. All other markets the ducktail was optional, except for the home German market where the ducktail had been outlawed by the TÜV road homologation department. This led to the introduction of the whale tail rear spoiler, available as an option on the 1974-75 Carrera 2.7 models, as well as the newly introduced 930 Turbo.
The Carrera 2.7 was replaced by the Carrera 3.0 for the 1976 model year, except for a special run of 113 1976 Carrera 2.7 MFI coupés were built for the German market featuring the 911/83 RS engine, with an additional 20 narrow-bodied 1976 Carrera MFI 2.7 Targas being supplied to the Belgian Gendarmerie. The 1976 Carrera 2.7 MFI Sondermodells were the last mechanically fuel injected 911 produced by Porsche and still featured the 1973 RS engine.
912E (1976)
For the 1976 model year, the 912E was produced for the U.S. market. This was a 4-cylinder version of the 911 in the same manner as the 912 that had last been produced in 1969. It used the I-series chassis powered by the Volkswagen 2.0 engine also used in the Porsche 914 for 1973 through 1975 model years. 2,099 units were produced. The 912E was replaced by the front-engine Porsche 924 for the 1977 model year.
Carrera 3.0 (1976–1977)
For the 1976 model year, Porsche introduced the Carrera 3.0 with wide rear flares, optional whaletail, and a variety of other luxury options. It was available in all markets except North America. The Carrera 3.0 was fitted with a variation of the 930 Turbo's 2994 cc engine (minus the turbocharger). The engine (dubbed the 930/02) featured K-Jetronic CIS. It developed 200 PS (150 kW; 200 hp) in contrast to the older Carrera 2.7 MFI model's 210 PS (150 kW; 210 hp). The crankcase and gearbox housing were made of aluminium rather than magnesium for improved reliability. Magnesium cases were reviled for thermal expansion/contraction issues as engines grew in displacement and heat generation also increased.
The new engine, which featured bigger intake and exhaust valves, produced greater torque allowing the Carrera 3.0 to achieve the same performance as the previous Carrera 2.7, 0–100 km/h (0–62 mph) in 6.1 seconds and 0–200 km/h (0–124 mph) in 27 seconds. Both versions boasted a top speed of approximately 236 km/h (147 mph).
Weight increased marginally by 45 kg (99 lb) to 1,120 kg (2,470 lb).
The 911 Carrera 3.0 was produced in both targa (1,125 examples produced) and coupé (2,566) versions. The Carrera 3.0 was available with a manual gearbox (type 915) with 4 or 5 speeds as well as 3-speed automatic transmission (called the Sportomatic). Production totals were 3,691 manual cars and 58 Sportomatic cars.
For the 1975 model year, Porsche introduced the first production turbocharged 911. Although called the 930 Turbo (930 being its internal type number) in Europe, it was marketed as the 930 Turbo Carrera in North America. The body shape incorporated wide wheel-arches to accommodate the wide 205/50R15 & 225/50R15 Pirelli P7 tyres, and a large rear spoiler often known as a "whale tail" on the early cars (modified from the original 1974 IROC design). They were initially fitted with a 3.0-litre engine 260 PS (190 kW; 260 hp) and four-speed manual transmission.
Production of the first 400 units qualified the 930 for FIA Group 4 competition. With the racing version called the Porsche 934 of 1976 participating at the 24 Hours of Le Mans and other races including battles with the BMW 3.0 CSL "Batmobile". The FIA Group 5 version called Porsche 935 evolved from the 934. Fitted with a slope nose or "slant nose", the 500+ PS car was campaigned in 1976 by the factory, winning the world championship title. Private teams went on to win many races, like Le Mans in 1979
The 911 has been raced extensively by private and factory teams, in a variety of classes. It is among the most successful competition cars. In the mid-1970s, the naturally aspirated 911 Carrera RSR won world championship races including Targa Florio and the 24 Hours of Daytona. The 911-derived 935 turbo also won the 24 Hours of Le Mans in 1979. Porsche won the World Championship for Makes in 1976, 1977, 1978, and 1979 with 911-derived models.
In a 1999 poll to determine the Car of the Century, the 911 was fifth. It is one of two in the top five that had remained continuously in production (the original Beetle remained in production until 2003). The one millionth example was manufactured in May 2017 and is in the company's permanent collection.
911 nomenclature
Although Porsche has used internal code numbers for each series of the 911, all models have been marketed and sold as 911s. The model series and associated internal codes are as follows:
911 (1964–1989)
930 (1975–1989) the turbocharged version
964 (1989–1994)
993 (1995–1998) the last air-cooled 911
996 (1999–2004) all-new body and water-cooled engines
997 (2005–2012)
991 (2012–2019) all-new body
992 (2019–)
A series letter is used by Porsche to indicate the revision for production cars, usually on an annual basis.[citation needed]
911s have also been categorized into families based on body styles or engine enhancements:
911 Carrera: including the Carrera, Carrera S, Carrera 4, Carrera 4S, Carrera GTS, Carrera 4 GTS, Carrera T. All are available as cabriolets except the Carrera T.
911 Targa: including the Targa 4, Targa 4S, Targa 4 GTS.
911 Turbo: including the Turbo, Turbo S. All are available as cabriolets.
GT3/GT3 RS: a track-focused version of the 911 Carrera with a naturally aspirated engine and rear wheel drive. No cabriolet variant has ever been produced to date. A grand touring version featuring comfort-oriented options is called the GT3 Touring, and is available for the 991 and 992 generations.
GT2/GT2 RS: the highest performance derivative, a track-focused version based on the Turbo with rear wheel drive. No cabriolet version has ever been produced to date. Now available as an RS (Renn Sport) model only.
Air-cooled engines (1964–1998)
911, 911E, 911L, 911S, 911T
The 911 traces its roots to sketches drawn by Ferdinand "Butzi" Porsche in 1959. The Porsche 911 was developed as a more powerful, larger and a more comfortable replacement for the 356, the company's first model. The new car made its public debut at the 1963 Frankfurt Motor Show[8] (German: Internationale Automobil-Ausstellung).[9] The car was developed with the proof-of-concept twin-fan Type 745 flat-six engine, but the car presented at the auto show had a non-operational mockup of the single-fan 901 engine, receiving a working unit in February 1964.
It originally was designated as the "Porsche 901" (901 being its internal project number). A total of 82 cars were built as which were badged as 901s. However, French automobile manufacturer 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. Instead of selling the new model with a different 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,[9] with the first 911s exported to the US in February 1965.
The first models of the 911 had a rear-mounted 130 hp (97 kW)[1] Type 901/01 flat-6 engine, in the "boxer" configuration like the 356, the engine is air-cooled and displaces 1,991 cc (2.0 L) as compared to the 356's four-cylinder, 1,582 cc (1.6 L) unit. The car had four seats although the rear seats were small, thus it is usually called a 2+2 rather than a four-seater (the 356 was also a 2+2). A four or five-speed "Type 901" manual transmission was available. The styling was largely penned by Ferdinand "Butzi" Porsche, son of Ferdinand "Ferry" Porsche. Butzi Porsche initially came up with a notchback design with proper space for seating two rear passengers but Ferry Porsche insisted that the 356's successor was to use its fastback styling. 7 prototypes were built based on Butzi Porsche's original design and were internally called the Porsche 754 T7. Erwin Komenda, the leader of the Porsche car body construction department who initially objected, was also involved later in the design.
The 911-based 912, powered by a flat-4 engine (1967)
Production of the 356 ended in 1965, but there was still a market for a 4-cylinder car, particularly in the US. The 912, introduced in the same year, served as a direct replacement, offering the de-tuned version of 356 SC's 4-cylinder, 1,582 cc (1.6 L), 90 hp (67 kW; 91 PS) boxer four Type 616/36 engine inside the 911 bodywork with Type 901 four-speed manual transmission (a 5-speed manual transmission was optional).
In 1966, Porsche introduced the more powerful 911S with Type 901/02 engine having a power output of 160 PS (120 kW; 160 hp). Forged aluminum alloy wheels from Fuchsfelge, with a 5-spoke design, were offered for the first time. In motorsport at the same time, the engine was developed into the Type 901/20 and was installed in the mid-engine 904 and 906 with an increased power output of 210 PS (150 kW; 210 hp), as well as fuel injected Type 901/21 installed in later variants of the 906 and 910 with a power output of 220 PS (160 kW; 220 hp).
In August 1967, the A series went into production with dual brake circuits and widened (5.5J-15) wheels still fitted with Pirelli Cinturato 165HR15 CA67 tyres.,[11] and the previously standard gasoline-burning heater became optional. The Targa (meaning "plate" in Italian) version was introduced. The Targa had a stainless steel-clad roll bar, as automakers believed that proposed rollover safety requirements by the US National Highway Traffic Safety Administration (NHTSA) would make it difficult for fully open convertibles to meet regulations for sale 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 several victories until 1973. The last win in the subsequently discontinued event was scored with a 911 Carrera RS against prototypes entered by 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 from 1968).
The 911 R (1967)
The 110 PS (81 kW; 110 hp) 911T was also launched in 1967 with Type 901/03 engine. The 130 PS (96 kW; 130 hp) model was renamed the 911L with Type 901/06 engine and ventilated front disc brakes. The brakes had been introduced on the previous 911S. The 911R with 901/22 engine had a limited production (20 in all), as this was a lightweight racing version with thin fiberglass reinforced plastic doors, a magnesium crankcase, twin overhead camshafts, and a power output of 210 PS (150 kW; 210 hp).
A clutchless semi-automatic Sportomatic model, composed of a torque converter, an automatic clutch, and the four-speed transmission was added in Autumn 1967. It was canceled after the 1980 model year[15] partly because of the elimination of a forward gear to make it a three-speed.
The B series went into production in August 1968, replacing the 911L model with 911E with fuel injection. It remained in production until July 1969. The 911E gained 185/70VR15 Pirelli Cinturato CN36, and 6J-15 wheels.
The C series was introduced in August 1969 with an enlarged 2.2-litre engine (84 mm bore x 66 mm stroke). The wheelbase for all 911 and 912 models was increased from 2,211–2,268 mm (87.0–89.3 in), to help as a remedy to the car's nervous handling at the limit. The overall length of the car did not change, but the rear wheels were relocated further back. Fuel injection arrived for the 911S (901/10 engine) and for a new middle model, 911E (901/09 engine).
The D series was produced from Aug. 1970 to July 1971. The 2.2-litre 911E (C and D series) had lower power output of the 911/01 engine (155 PS (114 kW; 153 hp) at 6,200 rpm) compared to the 911S's Type 911/02 (180 PS (130 kW; 180 hp) at 6,500 rpm), but 911E was quicker in acceleration up to 160 kilometres per hour (99 mph).
The E series for 1972–1973 model years (August 1971 to July 1972 production) consisted of the same models, but with a new, larger 2,341 cc (2.3 L) engine. This is known as the "2.4 L" engine, despite its displacement being closer to 2.3 litres. The 911E (Type 911/52 engine) and 911S (Type 911/53) used Bosch mechanical fuel injection (MFI) in all markets. For 1972 the 911T (Type 911/57) was carbureted, except in the US and some Asian markets where the 911T also came with (MFI) mechanical fuel injection (Type 911/51 engine) with power increase over European models (130 hp) to 140 hp commonly known as a 911T/E.
With power and torque increase, the 2.4-litre cars also got a newer, stronger transmission, identified by its Porsche type number 915. Derived from the transmission in the 908 race car, the 915 did away with the 901 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. The E series had the unusual oil filler behind the right side door, with the dry sump oil tank relocated from behind the right rear wheel to the front of it in an attempt to move the center of gravity slightly forward for better handling. An extra oil filler/inspection flap was located on the rear wing, for this reason it became known as an "Oil Klapper", "Ölklappe" or "Vierte Tür (4th door)".
The F series (August 1972 to July 1973 production) moved the oil tank back to the original behind-the-wheel location. This change was in response to complaints that gas-station attendants often filled gasoline into the oil tank. In January 1973, US 911Ts were switched to the new K-Jetronic CIS (Continuous Fuel Injection) system from Bosch on Type 911/91 engine.
911S models also gained a small spoiler under the front bumper to improve high-speed stability. The cars weighed 1,050 kg (2,310 lb). The 911 ST was produced in small numbers for racing (the production run for the ST lasted from 1970 to 1971). The cars were available with engines of either 1,987 cc (2.0 L) or 2,404 cc (2.4 L) displacement, having a power output of 270 PS (200 kW; 270 hp) at 8,000 rpm. Weight was down to 960 kg (2,120 lb). The cars had success at the Daytona 6 Hours, the Sebring 12 Hours, the 1000 km Nürburgring, and the Targa Florio.
Porsche 911 Carrera RS 2.7 touring
RS stands for Rennsport in German, meaning race sport. 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 developed to meet motorsport homologation requirements. Compared to a standard 911S, the Carrera 2.7 RS had a larger engine (2,687 cc) developing 210 PS (150 kW; 210 hp) with Bosch (Kugelfischer) mechanical fuel injection, revised and stiffened suspension, a "ducktail" rear spoiler, larger brakes, wider rear wheels and rear fenders, to fit 185/70VR15 & 215/60VR15 Pirelli Cinturato CN36 tyres. In RS Touring form it weighed 1,075 kg (2,370 lb), in Sport Lightweight form it was about 100 kg (220 lb) lighter, the saving coming from thin gauge steel used for parts of the body shell and also the use of thinner glass. In total, 1,580 units were made, and qualified for the FIA Group 4 class. 49 Carrera RSR cars were built with 2,808 cc (2.8 L) engines rated at 300 PS (220 kW; 300 hp).
The 911 RSR
For the 1974 IROC Championship (which started in December 1973), 1973 Carrera RSR models were fitted with the 3.0 engine and a flat "whale tail" in place of the ducktail spoiler along with wide body panels and large tyres.
In 1974, Porsche developed the Carrera RS 3.0 with mechanical fuel injection rated at 230 PS (170 kW; 230 hp). Its price was almost twice that of the 2.7 RS, but it offered racing capability. The chassis was largely similar to that of the 1973 Carrera RSR and the braking system was from the 917 racing car. The use of thinner metal plate panels and a minimalist interior enabled its weight to be reduced to around 900 kg (2,000 lb).
The Carrera RSR 3.0 was sold to racing teams and scored wins in several major sports car races of the mid-1970s. Also, a prototype Carrera RSR Turbo (with 2.1-litre engine due to a 1.4x equivalency formula) came second at the 24 Hours of Le Mans in 1974 and won several major races, a significant event in that its engine would form the basis of many future Porsche attempts in sports car racing. This, and the earlier 917, was Porsche's commitment to turbocharger applications in its cars.
911 and 911S 2.7 (1973–1977)
There is a common misconception that all 911s built between 1974 and 1989 are 'G-series' cars. In fact, the G-series was only produced for the 1974 model year. It was followed by the H, J, K, and so on.
The 1974 model year brought many significant changes to the 911 to meet legislative requirements around the world for both impact safety and emissions. First, the engine size was increased to 2,687 cc achieving higher torque. Second, new impact bumpers conformed with low-speed protection requirements of US regulations. 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 2.7-litre engine rated at 150 PS (110 kW; 150 hp) and 175 PS (129 kW; 173 hp), respectively. The standard 911 version received an increase to 165 PS (121 kW; 163 hp) for Model Year 1976, which meant that starting from MY 1976, there was only a difference in power of 10 hp between the 911 and the 911S. The engine remained a K-Jetronic 2.7-litre. The 911S 2.7 engine was rated during the entire lifespan at 175 hp (130 kW; 177 PS).
Carrera 2.7 MFI and CIS (1974–1976)
The Carrera 2.7 model built for all markets, except for the United States, used the 210 PS (150 kW; 210 hp) RS 911/83 engine with Bosch mechanical fuel injection pump from the 1973 Carrera RS. These Carrera 2.7 MFI models were built from 1974 until 1976 and were mechanically identical to the 1973 Carrera RS. The Carrera 2.7 model produced for the North American markets, often referred to as the Carrera 2.7 CIS, was powered by the same 2.7-litre engine as the 911S which produced 175 PS (129 kW; 173 hp). The initial Carrera 2.7 models had the same welded-on rear RS flares, before switching to the SC stamped style rear flares during the middle of the 1974 production year. The Carrera 2.7 coupés weighed in at 1,075 kg (2,370 lb), the same weight as the 1973 Carrera RS Touring.
For the 1974 model year, the Carrera 2.7 was available with the "ducktail" rear spoiler first introduced with the 1973 Carrera RS. In the North American markets, the ducktail was standard equipment for the Carrera. All other markets the ducktail was optional, except for the home German market where the ducktail had been outlawed by the TÜV road homologation department. This led to the introduction of the whale tail rear spoiler, available as an option on the 1974-75 Carrera 2.7 models, as well as the newly introduced 930 Turbo.
The Carrera 2.7 was replaced by the Carrera 3.0 for the 1976 model year, except for a special run of 113 1976 Carrera 2.7 MFI coupés were built for the German market featuring the 911/83 RS engine, with an additional 20 narrow-bodied 1976 Carrera MFI 2.7 Targas being supplied to the Belgian Gendarmerie. The 1976 Carrera 2.7 MFI Sondermodells were the last mechanically fuel injected 911 produced by Porsche and still featured the 1973 RS engine.
912E (1976)
For the 1976 model year, the 912E was produced for the U.S. market. This was a 4-cylinder version of the 911 in the same manner as the 912 that had last been produced in 1969. It used the I-series chassis powered by the Volkswagen 2.0 engine also used in the Porsche 914 for 1973 through 1975 model years. 2,099 units were produced. The 912E was replaced by the front-engine Porsche 924 for the 1977 model year.
Carrera 3.0 (1976–1977)
For the 1976 model year, Porsche introduced the Carrera 3.0 with wide rear flares, optional whaletail, and a variety of other luxury options. It was available in all markets except North America. The Carrera 3.0 was fitted with a variation of the 930 Turbo's 2994 cc engine (minus the turbocharger). The engine (dubbed the 930/02) featured K-Jetronic CIS. It developed 200 PS (150 kW; 200 hp) in contrast to the older Carrera 2.7 MFI model's 210 PS (150 kW; 210 hp). The crankcase and gearbox housing were made of aluminium rather than magnesium for improved reliability. Magnesium cases were reviled for thermal expansion/contraction issues as engines grew in displacement and heat generation also increased.
The new engine, which featured bigger intake and exhaust valves, produced greater torque allowing the Carrera 3.0 to achieve the same performance as the previous Carrera 2.7, 0–100 km/h (0–62 mph) in 6.1 seconds and 0–200 km/h (0–124 mph) in 27 seconds. Both versions boasted a top speed of approximately 236 km/h (147 mph).
Weight increased marginally by 45 kg (99 lb) to 1,120 kg (2,470 lb).
The 911 Carrera 3.0 was produced in both targa (1,125 examples produced) and coupé (2,566) versions. The Carrera 3.0 was available with a manual gearbox (type 915) with 4 or 5 speeds as well as 3-speed automatic transmission (called the Sportomatic). Production totals were 3,691 manual cars and 58 Sportomatic cars.
For the 1975 model year, Porsche introduced the first production turbocharged 911. Although called the 930 Turbo (930 being its internal type number) in Europe, it was marketed as the 930 Turbo Carrera in North America. The body shape incorporated wide wheel-arches to accommodate the wide 205/50R15 & 225/50R15 Pirelli P7 tyres, and a large rear spoiler often known as a "whale tail" on the early cars (modified from the original 1974 IROC design). They were initially fitted with a 3.0-litre engine 260 PS (190 kW; 260 hp) and four-speed manual transmission.
Production of the first 400 units qualified the 930 for FIA Group 4 competition. With the racing version called the Porsche 934 of 1976 participating at the 24 Hours of Le Mans and other races including battles with the BMW 3.0 CSL "Batmobile". The FIA Group 5 version called Porsche 935 evolved from the 934. Fitted with a slope nose or "slant nose", the 500+ PS car was campaigned in 1976 by the factory, winning the world championship title. Private teams went on to win many races, like Le Mans in 1979
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