The original Porsche 911 (pronounced nine eleven, ) is a sports car made by Porsche AG of Stuttgart, Germany. A prototype of the design was shown to the public in autumn 1963.[2] Production began in September 1964 and continued through 1989. It was succeeded by a modified version, internally referred to as Porsche 964 but still sold as Porsche 911, as are current models.
Mechanically, the 911 was notable [3] for being rear engined and air-cooled. From its inception, the 911 was modified both by private teams and the factory itself for racing, rallying and other types of automotive competition. The original 911 series is often cited as the most successful competition car ever,[4] especially when its variations are included, mainly the powerful 911-derived 935 which won 24 Hours of Le Mans and other major sports cars races outright against prototypes.
Prototyping
To update the style and utility of the 356B's T5 body, T7 body styling/design project was led by Butzi Porsche by applying modified style and 100mm longer wheelbase to 356B Karmann hardtop in 1959–1960. Another design/engineering project, T6 body, led by Erwin Komenda, including a bigger front trunk and rear engine compartment opening, bigger rear window, and twin grilles on the engine lid, was progressing alongside. The T6 debuted in 1962 as a facelift on 356B without the longer wheelbase or the 911-like front and rear style of the T7.
The increase in body length was used on the T7 prototype [5] for the rear '+2' passenger room making the body a full(er) four-seater, not for additional space for a six cylinder engine as it, as well as the T6, was a 356 body style candidate. The T7 body was completed into a drivable prototype with a pushrod 1600 Super (1582cc 75hp Typ 616/12) engine as Typ 695.[6] In 1962–63, the 695's engine was swapped with 2L four cylinder DOHC engine of 356B Carrera GS (1968cc 130hp Typ 587/1) and became Typ 754, that served as a benchmark in comparisons against Typ 901 prototypes.[7]
Klaus von Rücker and Leopold Jäntschke led the team, including a young Hans Mezger and Ferdinand Piëch, to develop the 2 litre six cylinder engine that was numbered the Typ 745 with intake camshaft above, and exhaust camshaft below the crankshaft to operate horizontal pushrods in an unusual dry-sump configuration. Ferry Porsche, having experiences on DOHC racing engines, did not like this arrangement in the air-cooled six cylinder pushrod engine as it did not have sufficient benefit to justify the increase in the number of camshafts. Also, the new twin vertical (horizontal axis) fans on this were found to suffice with only one vertical fan in the development, as this cast-aluminium 11-wing-blade design utilising a 12V AC alternator as the drive shaft (developed on racing engines with then-new fibre-glass shroud) was much more efficient than the Volkswagen-style flat-plate fabricated fin scirocco fan (in front of a DC generator) of Typ 502/506/508/527/528/531/532/546/557/589/616 engines for the 356.
So the 745 engine was abandoned and the 2 litre air-cooled SOHC (two camshafts on a flat six engine) wet-sump six cylinder boxer Typ 821 engine was drafted and prototyped with a single vertical fan. Although wet-sump was the norm for Porsche production engines, Ferdinand Piëch strongly argued for dry-sump of the 745 that could give a lower center of gravity through lower position of the engine/crankshaft in the car as well as a straight adaptability to racing. Ferry Porsche agreed with this Piëch opinion and the dry-sump Typ 901 engine was born with a single intermediary shaft below the crankshaft (which also drives the oil scavenge and pressure pumps mounted inside the crankcase) that drives two single-stage single-row chains, in turn, driving a camshaft in each of the two cam-carriers on six cylinder-heads.[8]
After the size and configuration of 80 mm bore x 66 mm stroke, 1,991 cc Typ 901 engine with Solex 40PI carburettors were more or less finalised, Butzi Porsche led a team to merge the front and rear style of the T7 body with the size requirements of the six cylinder dry-sump engine, as well as other new components including Typ 901 four/five-speed transaxle, rack and pinion steering, MacPherson strut front suspension, and semi-trailing arm rear suspension to come up with the T8 body.[9] Erwin Komenda was responsible in the chassis design to incorporate the new components. The resultant Typ 901 chassis/body ended up being 70mm narrower and 120mm longer than the production T5/T6 body of the 356B/C, with a 111mm longer wheelbase.
This car was introduced to the world as "Porsche 901" at the 1963 Internationale Automobil-Ausstellung (Frankfurt Motor Show) on 12 September 1963. However, Peugeot protested because it had exclusive rights in France 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 model name to "911" for all markets, but the engine designation and parts number prefix remained '901'. A total of 82 cars (The factory retained chassis #01, 02 and 03. Chassis number 13 was skipped and became #14.) were built as model "901" before the production switched over to the "911" marking on the engine lid, and it went on sale as "Porsche 911" in 1964.
2.0-litre / O, A and B series (1964–1969)
The initial series became known as the O series, produced until July 1967, and the MY1968 911s as the A series, followed by the MY1969 B series.[10] These earliest editions of the 911 had Typ 901/01 an air-cooled, rear-mounted, all-aluminium-alloy, 1991 cc 130 PS SOHC flat-six boxer engine, which has almost no parts interchangeability to the 356's four-cylinder pushrod 1.6L, or the 2.0L DOHC unit. It was mated to a five-speed manual "Type 901" transmission. The car had 2+2 seating, though the rear was very small, like the 356. The styling was by Ferdinand "Butzi" Porsche, son of Ferdinand "Ferry" Porsche. Erwin Komenda, the leader of the Porsche car body construction department, was responsible for the engineering aspects of the new chassis/body, incorporating the new engine, transmission, steering, and suspension into the monocoque. In mid-1966, the 901/01 engine (9.0:1 compression ratio, Solex 40PI) was changed to Typ 901/05 with two Weber 40IDA3C carburettors (3 choke/barrel, with two fuel needle valves and two floats each). For the model year (MY)1967, Porsche introduced the more powerful 911S (901/02 160 PS at 6,600 rpm, 9.8:1 compression ratio, Weber 40IDA3C carburettor). Forged 911R-style alloy wheels from Fuchs, in a distinctive 5-leaf design, were offered for the first time, which coincided with the 911S debut. In 1967, 210 PS racing version Typ 901/20 (Weber 46IDA3C) twin-plug engine was developed and used in the Porsche 904/6, 911R
2.2-litre / C and D series (1969–1971)
For model year 1970, the displacement of all 911 engines was increased to 2195 cc with 84 mm bore x 66 mm stroke.
Power outputs were uprated to 125 PS in the 911T (911/03 engine, Zenith 40TIN), 155 PS in the 911E (911/01 MFI), and 180 PS in the 911S (911/02 MFI). The engines for Sportomatic were 911/06 (Zenith 40TIN) for the T, 911/04 (MFI) for the E, and 911/05 (MFI) for the S, all with the same power rating as the engines for manual transmission. For the Canada/US market, only 911T had market-specific 911/07 (125 PS, Zenith 40TIN) for the manual, and 911/08 (125 PS, Zenith 40TIN) for Sportomatic. These engines had a lighter magnesium-alloy crankcase, larger valves/ports, and stronger conrods.
The internal code for this C series, its 2.2L engines, and parts number prefix for the new parts were switched from "901" to "911", including the new Typ 911 transaxle with a larger 225mm diameter clutch. The body had aluminium engine lid, and hidden-from-sight pull levers on door handles, replacing the previous push buttons. CDI ignition and ventilated brake discs became standard for all models.
D series in MY1971 (from August 1970 production) added hot-dip zinc coating rust-proofing, side impact beam in the doors, central twist knob on the glove box lid, three-speed wipers with intermittent function (911T without intermittent), and the fuel pump behind the fuel tank was relocated to the left-rear of transmission. All the engines added oil squirters on the crankshaft and new sealed chain tensioners. Power windows became optional equipment for the first time.[15]
The 912
2.4-litre / E and F series (1971–1973)
The 1972–1973 model years consisted of the same models of 911— the entry level T, the midrange E and the top-of-the-line S. However, all models received a new, larger 2341 cc engine with the unchanged 84 mm bore and a lengthened 70.4 mm stroke (2.2L units had a 84 mm bore and 66 mm stroke). This is universally marketed as the "2.4L" engine, despite its displacement being closer to 2.3 litres— perhaps to emphasize the increase over the 2.2 L.
The 911E and 911S used mechanical fuel injection (MFI) in all markets. The 911T was carbureted, except in the United States and Japan where it also used MFI, which accounts for the 10 PS power difference. The new power ratings for the T models were: 130 PS with Zenith 40TIN for the manual (911/57 engine), and 125 PS with Weber 40IDTP3 for Sportomatic (911/67), or 140 PS with manual (911/51, MFI) or Sportomatic (911/61, MFI) in the U.S. and Japan. The ratings for the 911E were 165 PS for the manual (911/52, MFI) and the same 165 PS for the Sportomatic (911/62, MFI). S models were 190 PS for manual (911/53, MFI) and Sportomatic (911/63, MFI). 911S model also gained a discreet spoiler under the front bumper to improve high-speed stability. With a dry weight of 1050 kg, these models are often regarded as the best classic mainstream 911s.
With the power and torque increase, the 2.4 L cars also received 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 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, etcetera. Some say this was because the dog-leg shift to second gear was inconvenient for city driving, others say it was due to Porsche's desire to put 5th gear outside the main transmission housing where it could easily be changed for different races. Another significance of the 915 transmission is the differential gear axis line being closer to the engine to remedy the driveshafts having a rearward angle to accommodate the
Carrera RS 2.7 & RSR 2.8 (1972–1973)
The Carrera RS models, valued by collectors, are considered by many to be the greatest classic 911s of all time.[20] RS stands for Rennsport in German, meaning "racing sport". The Carrera name was reintroduced from the 356 Carrera which had itself been named after Porsche's victories in the Carrera Panamericana races in Mexico in the 1950s. The RS was built so that Porsche could enter FIA Group 4 GT class in racing that required minimum 500 unit production volume. Compared with a standard 911S, the Carrera 2.7 RS had a larger 2687 cc boxer-6 twin-ignition (911/83) engine with a bore x stroke of 90x70.4 mm developing 210 PS at 6,300 rpm and 255 Nm of torque at 5,100 rpm with Bosch mechanical fuel injection.[21] Retaining the bore center distance of the 2L engines, this increase in bore size from 80 mm (of the 2L) to 90 mm was made possible in part by the Nickel-Silicone cylinder surface protection (NIKASIL) by Mahle GmbH,[22]
2.7-litre / G, H, I and J series (1974–1977)
The new impact bumper
MY 1974 was the introduction of impact bumpers to conform with low speed protection requirements of U.S. law, these bumpers being so successfully integrated into the design that they remained unchanged for 15 years. In 1974 the engine size was also increased to 2,687 cc, giving an increase in torque. 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 wings of the old 2.4, now had a detuned version of the RS engine producing 150 and 175 PS respectively. The top of the line version received the Carrera name and was powered by the 210hp 2.7 of the old Carrera RS 2.7 for 1974–1975, and a 200hp 3.0 naturally aspirated derivation of the 930 Turbo engine for 1976–1977. In colloquial speak all 911s from MY1974 G-series until MY1989 are usually referred to as "G-series" because it was the introduction of major visual changes that remained in place until the introduction of the 964 generation.
Carrera 2.7 / G and H series (1974–1975)
The Carrera 2.7 was mechanically similar to the 1973 RS, inheriting its 210 PS MFI engine and still weighed the same at 1075 kg (2370 lb). It had the wide RS rear wings and also the ducktail for the 1974 model (except for the German market). It was available either as a coupé or a Targa. For 1976 a special run of 113 coupés with MFI were made. In addition, 30 MFI Targas with narrow rear wings were made for the Belgian Police.
Carrera RS 3.0, RSR 3.0 & RSR Turbo 2.1 (1974)
In 1974, Porsche created the Carrera RS 3.0 (911/77, 95 mm bore x 70.4 mm stroke, 2,993 cc) producing 230 PS as a road model. 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 racing model and the brake system was from the Porsche 917. The use of thin metal body panels and a spartan interior enabled the shipping weight to be reduced to around 900 kg.
The Carrera RSR 3.0 (911/74, 2,993 cc, 95 mm bore x 70.4 mm stroke, 315 PS) and Carrera RSR Turbo (911/76, 500 PS 83 mm x 66 mm, 2,142 cc engine, due to a 1.4x turbo-equivalency formula) were made in low volume for racing in 1974. The RSR Turbo came in second overall at the 24 Hours of Le Mans in 1974, a significant event in that its engine would form the basis of many future Porsche attempts in sports car racing, and can be regarded as the start of its commitment to turbocharging.
Turbo (Type 930) (1974–1989)
In 1974, Porsche introduced the first production turbocharged 911. Although called simply Porsche 911 Turbo in Europe, it was marketed as the Porsche 930 (930 being its internal type number) in North America. The body shape is distinctive, thanks to wide wheel-arches to accommodate the wide tires, and a large rear spoiler often known as a "whale tail" on the early cars, and "tea-tray" on the later ones. Starting out with a 3.0 L engine producing 260 PS, it rose to 3.3 L and 300 PS for 1978. The early cars are known for their exhilarating acceleration coupled with challenging handling characteristics and extreme turbo lag.
Production figures of the car soon qualified its racing version for FIA Group 4 competition as the Porsche 934 of 1976. Many participated at Le Mans and other races including some epic battles with the BMW 3.0 CSL "Batmobile". The wilder Porsche 935, a finer tuned car in FIA Group 5 that evolved from the 2.1 L RSR Turbo of 1974, was first campaigned in 1976 by the factory, and despite subsequent withdrawal of the official works team after 1978, it ultimately won Le Mans outright in 1979 in the hands of the private Kremer Racing team. Privateers continued to compete successfully with the car until well into the 1980s.
Due to stricter emissions regulations, the 930 was withheld from the US and Japanese markets from 1981 through 1985. It was re-introduced into the United States in 1986.
As demand for the Turbo soared in the late 1980s, Porsche introduced novelty variants including a slant-nose version (option M505/M506), while not significantly improving the range mechanically.
SC / L, M, A, B, C and D series (1978–1983)
Starting in MY 1978, the new 3.0 L 911 SC (2,994 cc) was now the second generation basic 911 model. It was in effect a Carrera 3 (known as a 911S in the United States) detuned to provide 180 PS. The "SC" designation was reintroduced by Porsche for the first time since the 356 SC (as distinguished from the race-engined 356 Carrera). No Carrera versions were produced and the 930 Turbo remaining at the top of the range. Porsche's engineers felt that the weight of the extra luxury, safety and emissions equipment on these cars was blunting performance compared to the earlier, lighter cars with the same power output, so in non-US cars, power was increased to 188 PS for 1980, then finally to 204 PS. However, cars sold in the US market retained their lower-compression, 180 PS engines throughout. This enabled them to be run on lower-octane fuel.
In model year 1980, Porsche offered a Weissach special edition version of the 911 SC, named after the town in Germany where Porsche has their research center. Designated M439, it was offered in two colors with the turbo whale tail & front chin spoiler, body color-matched Otto Fuchs KG alloy wheels and other convenience features as standard. 408 cars were built for North America.[25] In 1982, a Ferry Porsche Edition was made and a total of 200 cars were sold with this cosmetic package.
SCs sold in the UK could be specified with the Sport Group Package (UK) which added stiffer suspension, the rear spoiler
3.2 Carrera / E, F, G, H, I, J and K series (1984–1989)
With the 911's future ensured, 1983 saw the launch of a replacement for the successful SC series. It was the MY 1984 911 3.2 Carrera, reviving the Carrera name for the first time since 1977. The 911 3.2 Carrera was the second iteration of the 911 series, with all subsequent models featuring new body styling with new brake, electronic and suspension technologies.
A new, higher-displacement motor, a 3.2-litre version of Porsche's horizontally opposed flat-six, was utilized. At the time, Porsche claimed it was 80% new.[28] The new swept volume of 3,164 cc was achieved using the 95 mm bore (from the previous SC model) combined with the 1978 Turbo 3.3 crankshaft's 74.4 mm stroke. In addition, higher domed pistons increased the compression ratio from 9.8 to 10.3:1 (although only 9.5:1 for the US market). New inlet manifold and exhaust systems were fitted. The 915 transmission was carried over from the SC series for the first three model years. In 1987, the Carrera got a new five-speed gearbox sourced from Getrag, model number G50 with proven Borg-Warner synchronizers. This slightly heavier version also featured a hydraulically operated clutch.
With the new engine, power was increased to 207 PS at 5,900 rpm for North American-delivered cars and to 231 PS at 5,900 rpm for most other markets. This version of the 911 accelerated from 0–60 mi/h in 5.4 seconds (Car & Driver tested 5.3 seconds for the
Position vis-à-vis the Porsche 928
When 911 sales began to decline by the early 1970s, Porsche executives approved work on the Porsche 928 in 1971. Larger and featuring a front-mounted water-cooled V8 engine considerably more powerful than the contemporary 911's air-cooled flat six, the 928 was intended to be a comfortable grand tourer rather than a dedicated sports car. Capable of out-accelerating and even matching or exceeding the 911's cornering prowess in some model years, the 928 sold reasonably well from its introduction in 1977 until its discontinuation in 1995. In spite of its overall capability, the expensive company flagship never outsold the 911. Unlike its smaller, sportier 4-cylinder sibling Porsche 924 variants, the 928 was never raced by the factory, and seldom by privateers. Comparable large engine Mercedes 450 SLC 5.0 and Jaguar XJS were raced with some success, though.
Motorsport
The Porsche factory's first 911-based race car was a lightly modified 1964 Type 901. It finished fifth in the 1965 Monte Carlo Rally and is now housed in the Porsche Museum.[34]
Porsche 911s dominated the Trans Am Series under two litre class in the sixties, winning the championship from 1967 to 1969. They would later go on to win the championship in 1973, 1974, and 1980. Despite Trans Am being a sedan championship in its early years, the Porsche 911 was a sports car. Its inclusion is likely due to its resemblance to a coupé.
A 1967 911 was driven by Jack Ryan raced in NASCAR for a total of 13 races of the 1968 season.[35]
Explanatory Notes
Further reading
- Frère, P (2006). Porsche 911 Story (eighth edition). J H Haynes & Co Ltd. ISBN 1-84425-301-5
- Meredith, L (2000). Porsche 911. Sutton Publishing. ISBN 0-7509-2281-8.
- Morgan, P (1995). Original Porsche 911. MBI Publishing. ISBN 1-901432-16-5
- Wood, J (1997). Porsche: The Legend. Parragon. ISBN 0-7525-2072-5.
- Raby, P (2005) "Porsche 911 Identification Guide". Herridge & Son. ISBN 0-9541063-8-5
- Wilkinson, Stephan (2005) "The Gold-Plated Porsche". The Lyons Press. ISBN 1-59228-792-1, rebuilding a 911.
External links
References
- Sales brochure 1035.20 for 2.7 litre "Porsche 911", "Porsche 911S" and "Porsche Carrera", VW-Porsche Vertriebsgesellschaft mbH, (circa 1973)^
- Jonathan Kandell. Ferdinand Porsche, Creator of the Sports Car That Bore His Name, Is Dead at 88 (obituary) The New York Times, 28 March 1998, retrieved 6 February 2008^
- admin. Porsche 911 History Response Motors, 2021-05-03, retrieved 2026-04-07^