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Porsche 911 classic

Porsche 911 classic

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The original Porsche 911 (pronounced as nine eleven, ) was a sports car
Sports car
The term sports car has been defined as "an open, low-built, fast motor car." The term describes a class of automobile with two seats, two doors, precise handling, brisk acceleration, and sharp braking — trading practical considerations such as passenger space, comfort, and cargo capacity...

 made by Porsche
Porsche
Porsche SE is a German automotive manufacturer of luxury high performance automobiles, which is majority-owned by the Piëch and Porsche families. Dr. Ing. h.c. F. Porsche AG , often shortened to Porsche AG, is responsible and manufacturer of the Porsche automobile line...

 AG
Aktiengesellschaft
Aktiengesellschaft is a German term that refers to a corporation that is limited by shares, i.e. owned by shareholders, and may be traded on a stock market...

 of Stuttgart
Stuttgart
Stuttgart is the capital of the state of Baden-Württemberg in southern Germany. The sixth-largest city in Germany, Stuttgart has a population of 600,038 while the metropolitan area has a population of 5.3 million ....

, Germany
Germany
Germany , officially the Federal Republic of Germany , is a country in Central Europe. It is bordered to the north by the North Sea, Denmark, and the Baltic Sea; to the east by Poland and the Czech Republic; to the south by Austria and Switzerland; and to the west by France, Luxembourg, Belgium,...

. The famous, distinctive, and durable design was introduced in autumn 1963 and built until 1989. It was succeeded by a modified version, internally referred to as Porsche 964
Porsche 964
The Porsche 964 is the company's internal name for the version of the Porsche 911 model manufactured and sold between 1989 and 1993. It featured significant styling revisions over previous versions of the 911, most prominently the more integrated bumpers , although it was still obviously a 911...

 but still sold as Porsche 911, as are current models.

Mechanically, the 911 was notable for being rear engined and air-cooled
Air-cooled engine
Air-cooled engines rely on the circulation of air directly over hot parts of the engine to cool them.-Introduction:Most modern internal combustion engines are cooled by a closed circuit carrying liquid coolant through channels in the engine block, where the coolant absorbs heat, to a heat exchanger...

. 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, especially when its variations are included, mainly the powerful 911-derived 935
Porsche 935
The Porsche 935 was introduced in 1976, as the factory racing version of the Porsche 911 turbo prepared for FIA-Group 5 rules. It was an evolution of the Porsche Carrera RSR 2.1 turbo prototype which had scored 2nd overall in the 1974 24 Hours of Le Mans....

 which won 24 Hours of Le Mans
24 Hours of Le Mans
The 24 Hours of Le Mans is the world's oldest sports car race in endurance racing, held annually since near the town of Le Mans, Sarthe, France...

 and other major sports cars races outright against prototypes.

Introduction


The Porsche 911 was developed as a much more powerful, larger, more comfortable replacement for the Porsche 356
Porsche 356
The Porsche 356 was the company's first production automobile. It was a lightweight and nimble handling rear-engine rear-wheel-drive 2 door sports car available in hardtop and convertible configurations. Design innovations continued during the years of manufacture, contributing to its motorsports...

, the company's first model, and essentially a sporting evolution of the Volkswagen Beetle
Volkswagen Beetle
The Volkswagen Type 1 is an economy car produced by the German auto maker Volkswagen from 1938 until 2003. It used an air cooled rear engined rear wheel drive ....

. The new car made its public debut at the 1963 Internationale Automobil-Ausstellung, better known to English speakers as the Frankfurt Motor Show.

It was initially designated as the "Porsche 901
Porsche 901
Porsche 901 was the name originally intended for the Porsche 911.By the early 1960s, Porsche project design numbers had reached into the 800s. For instance, Porsche's 1962 F1 model was called Porsche 804....

", after its internal project number. However, Peugeot
Peugeot
Peugeot is a major French car brand, part of PSA Peugeot Citroën, the second largest European carmaker.Peugeot's roots go back to 19th-century coffee mill and bicycle manufacturing. The Peugeot company and family is originally from Sochaux, France. Peugeot retains a large manufacturing plant and...

 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. It went on sale in 1964.

2.0-litre / O, A and B series (1964–1969)


The earliest editions of the 911 had a 130 PS[1] (96 kW) flat-6
Flat-6
A flat-6 or horizontally-opposed-6 is a flat engine with six cylinders arranged horizontally in two banks of three cylinders on each side of a central crankcase...

 engine, in the "boxer
Flat engine
A flat engine is an internal combustion engine with multiple pistons that all move in the horizontal plane. The most popular and significant layout has cylinders arranged in two banks on either side of a single crankshaft, generally known as "boxers"...

" configuration like the 356, air-cooled and rear-mounted, displaced 1991 cm³ (cc)
Cubic centimetre
A cubic centimetre or cubic centimeter is a commonly used unit of volume extending the derived SI-unit cubic metre and corresponds to the volume of a cube measuring 1×1×1 cm...

 compared with the 356's four-cylinder, 1600 cc unit. The car had four seats although the rear seats are very small, and 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 five-speed manual
Manual transmission
A manual transmission, or manual gearbox is a type of transmission used in motor vehicle applications...

 "Type 901" transmission
Transmission (mechanics)
A transmission or gearbox provides speed and torque conversions from a rotating power source to another device using gear ratios, including for a motor vehicle partly because of the limitations of internal combustion engines...

. The styling was largely by Ferdinand "Butzi" Porsche
Ferdinand Alexander Porsche
Ferdinand Alexander Porsche , nicknamed "Butzi", son of Ferry Porsche, grandson of Ferdinand Porsche, is an Austrian designer whose best known product is the first Porsche 911....

, son of Ferdinand "Ferry" Porsche
Ferdinand Anton Ernst Porsche
Ferdinand Anton Ernst Porsche , mainly known as Ferry Porsche, was an Austrian technical automobile designer and automaker-entrepreneur. He operated Porsche AG in Stuttgart, Germany. His father, Ferdinand Porsche Sr was also a renowned automobile engineer. His nephew, Dr...

. Erwin Komenda
Erwin Komenda
Erwin Komenda was the designer of the bodies for the VW Beetle and various Porsche sports cars.He was born in Weyer, a little village in Upper Austria near Steyr. From 1926 to 1929 he worked as a car-body designer in the Steyr factories. There he met Ferdinand Porsche in 1929 when Porsche joined...

, 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
Flat-4
A flat-4 or horizontally-opposed-4 is a flat engine with four cylinders arranged horizontally in two banks of two cylinders on each side of a central crankcase...

 car, particularly in the USA. The Porsche 912
Porsche 912
The Porsche 912 was a sports car manufactured by Porsche of Germany between 1965 and 1969 as their entry-level model. The 912 was a nimble-handling compact performance four-seat vehicle, delivering 90 SAE horsepower at 5800 rpm. The 912 was also capable of up to fuel economy. This combination was...

, introduced the same year, served as a direct replacement. It used the 356's 4-cylinder, 1600 cc, engine but wore the 911 bodywork.

In 1966 Porsche introduced the more powerful 911S, the engine's power raised to . Alloy
Alloy
An alloy is a partial or complete solid solution of one or more elements in a metallic matrix. Complete solid solution alloys give single solid phase microstructure, while partial solutions give two or more phases that may be homogeneous in distribution depending on thermal history...

 wheels from Fuchs
Fuchs
- Industry :* Fuchs Petrolub, the world's largest independent manufacturer of lubricants, and related speciality products.* Fuchs Group, spice company based in Germany- People :* Arved Fuchs , writer and adventurer...

, 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
Porsche 904
The Porsche 904 is an automobile which was produced by Porsche in Germany in 1964 and 1965. It was officially called Porsche Carrera GTS due to the same naming rights problem that required renaming the Porsche 901 to Porsche 911.- History :...

 and Porsche 906
Porsche 906
The Porsche 906 or Carrera 6 was the last street-legal racing car from Porsche. 65 were produced in 1966. This allowed the model to be homologated for racing in the FIA's new Group 4 Sports Car category although the type would also compete in modified form in the Group 6 Sports Prototype class.A...

, the engine was developed to 210 PS (154 kW).

In 1967 the Targa
Targa top
Targa top, targa for short, is a semi-convertible car body style with a removable roof section and a full width roll bar behind the seats. The rear window can be fixed or removable, making it a convertible-type vehicle...

 version was introduced as a "stop gap" model. The Targa had a stainless steel
Stainless steel
In metallurgy, stainless steel, also known as inox steel or inox, is defined as a steel alloy with a minimum of 11% chromium content by mass. Stainless steel does not stain, corrode, or rust as easily as ordinary steel...

-clad roll bar, as Porsche had, at one point, thought that the NHTSA would outlaw fully open convertible
Convertible
A convertible is a type of automobile in which the roof can retract and fold away, converting it from an enclosed to an open-air vehicle. Many different automobile body styles are manufactured and marketed in convertible form....

s in the US
United States
The United States of America is a federal constitutional republic comprising fifty states and a federal district...

, an important market for the 911. The name "Targa" (which means "shield" in Italian) came from the Targa Florio
Targa Florio
The Targa Florio was an open road endurance automobile race held in the mountains of Sicily near Palermo. Founded in 1906, it used to be the oldest sports car racing event, part of the World Championship until 1973...

 sports car road race in Sicily
Sicily
Sicily is the largest island in the Mediterranean Sea. It is an autonomous region of Italy. Several much smaller islands surrounding it are considered to be part of Sicily....

, Italy
Italy
Italy , officially the Italian Republic , is a country located on the Italian Peninsula in Southern Europe and on the two largest islands in the Mediterranean Sea, Sicily and Sardinia. Italy shares its northern, Alpine boundary with France, Switzerland, Austria and Slovenia...

 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
Plastic
Plastic is the general common term for a wide range of synthetic or semisynthetic organic amorphous solid materials suitable for the manufacture of industrial products...

 rear window (although a fixed glass version was offered alongside from 1968).

The 911T was also launched in 1967 and effectively replaced the 912. The staple model was renamed the 911L. The 911R had a very limited production (20 in all). This was a lightweight racing version with thin aluminium
Aluminium
Aluminium or aluminum is a silvery white and ductile member of the boron group of chemical elements. It has the symbol Al; its atomic number is 13. It is not soluble in water under normal circumstances....

 doors, a magnesium
Magnesium
Magnesium is a chemical element with the symbol Mg, atomic number 12 and common oxidation number +2. It is an alkaline earth metal and the eighth most abundant element in the earth's crust by mass, although ninth in the Universe as a whole...

 crankcase, twin-spark cylinder head
Cylinder head
In an internal combustion engine, the cylinder head sits above the cylinders and consists of a platform containing part of the combustion chamber and the location of the valves and spark plugs...

s, and a power output of .

In 1969 the B series was introduced: the wheelbase
Wheelbase
In both road and rail vehicles, the wheelbase is the distance between the centers of the front and rear wheels.- Road :In automobiles, the wheelbase is the horizontal distance between the center of the front wheel, and the center of the rear wheel...

 for all 911 and 912 models was increased from 2211mm to 2268mm (87 to 89¼ in), an effective remedy to the car's 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
Torque
Torque, also called moment or moment of force , is the tendency of a force to rotate an object about an axis, fulcrum, or pivot. Just as a force is a push or a pull, a torque can be thought of as a twist....

 converter, an automatic
Automatic transmission
An automatic transmission is an automobile gearbox that can change gear ratios automatically as the vehicle moves, freeing the driver from having to shift gears manually...

 clutch
Clutch
A clutch is a mechanism for transmitting rotation, which can be engaged and disengaged. Clutches are useful in devices that have two rotating shafts. In these devices, one shaft is typically driven by a motor or pulley, and the other shaft drives another device. In a drill, for instance, one shaft...

, and the four speed transmission
Transmission (mechanics)
A transmission or gearbox provides speed and torque conversions from a rotating power source to another device using gear ratios, including for a motor vehicle partly because of the limitations of internal combustion engines...

, was added to the product lineup.

B17 (1969)


It is a concept designed by Pininfarina by lengthening the wheelbase by , resulting in a car heavier than original.

2.2-litre / C and D series (1969–1971)


For MY
Model year
The model year of a product is a number used worldwide, but with a high level of prominence in North America, to describe approximately when a product was produced, and indicates the coinciding base specification of that product....

 1970 the engines of all 911s were increased to . Power outputs were uprated to in the 911T, in the 911E, and in the 911S. The 912
Porsche 912
The Porsche 912 was a sports car manufactured by Porsche of Germany between 1965 and 1969 as their entry-level model. The 912 was a nimble-handling compact performance four-seat vehicle, delivering 90 SAE horsepower at 5800 rpm. The 912 was also capable of up to fuel economy. This combination was...

 was discontinued, thanks to the introduction of the Porsche 911T as an entry model.

The 2.2 L 911E was called "The secret weapon from Zuffenhausen". Despite the lower power output of the 911E compared to the 911S, the 911E was quicker in acceleration
Acceleration
In physics, and more specifically kinematics, acceleration is the change in velocity over time. Because velocity is a vector, it can change in two ways: a change in magnitude and/or a change in direction. In one dimension, i.e. a line, acceleration is the rate at which something speeds up or slows...

 up to .

2.4-litre / E and F series (1971–1973)


The 1972–1973 model year
Model year
The model year of a product is a number used worldwide, but with a high level of prominence in North America, to describe approximately when a product was produced, and indicates the coinciding base specification of that product....

s consisted of the same models of 911— the entry level T, the midrange E and the top of the line S. However, all models got a new, larger engine. This is universally known 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 new power ratings were , or in the U.S., for the T, for the E and for the S.

The 911E and 911S used mechanical
Mechanical
* Mechanical engineering, a branch of engineering concerned with the application of physical mechanics* HVAC , the mechanical systems of a building...

 fuel injection
Fuel injection
Fuel injection is a system for mixing fuel with air in an internal combustion engine. It has become the primary fuel delivery system used in gasoline automotive engines, having almost completely replaced carburetors in the late 1980s....

 (MFI) in all markets. The 911T was carbureted, except in the US where it also used MFI, which accounts for the power difference between the two. In January, 1973, US 911Ts were switched to the new K-Jetronic CIS (Continuous Fuel Injection) system from Bosch
Robert Bosch GmbH
Robert Bosch GmbH is a German diversified technology-based corporation which was started in 1886 by Robert Bosch in Stuttgart, Germany.Robert Bosch GmbH is the world's largest supplier of automobile components and has business relationships with virtually every automobile company in the world. The...

. These CIS-powered cars are usually referred to as "1973.5" models by enthusiasts.

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
Porsche 908
The Porsche 908 was a racing car from Porsche, introduced in 1968 to continue the Porsche 906/Porsche 907/Porsche 910 series of models designed under Ferdinand Piech....

 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. Some say this was because the dog-leg shift to second gear was inconvenient for city driving, other 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. The Sportomatic transmission was still available but only as a special order.

In 1972 a tremendous effort was made to improve the handling of the 911. Due to the 911's unusual engine placement (rear-mounted, with most of the vehicle's weight concentrated over the rear axle) early 911's were prone to oversteer
Oversteer
Oversteer is a phenomenon that can occur in an automobile while attempting to corner or while already cornering. The car is said to oversteer when the rear wheels do not track behind the front wheels but instead slide out toward the outside of the turn. Oversteer can throw the car into a spin...

 when driven at the limit, and could easily spin in the hands of an inexperienced driver. In an attempt to remedy this, Porsche relocated the oil
Oil
An oil is any substance that is liquid at ambient temperatures and is hydrophobic but soluble in organic solvents. Oils have a high carbon and hydrogen content and are nonpolar substances. The general definition above includes compound classes with otherwise unrelated chemical structures,...

 tank from its position behind the right rear wheel to in front of it. This had the effect of moving the weight of almost 9 quart
Quart
The quart is an imperial and US customary unit of volume equal to a quarter of a gallon, two pints, or four cups. Since gallons of various sizes have historically been in use, quarts of various sizes have also existed...

s (8.5 L) of oil from outside the wheelbase to inside, improving weight distribution and thus, handling. To facilitate filling of the oil tank, Porsche installed an oil filler door (much like the fuel filler door on the left front fender) on the right rear quarter panel. Unfortunately, this unique design was scrapped after only one year, some say because inattentive gas station attendants were putting gas in the oil tank. The oil tank was subsequently moved back to its original position for model year 1973, and remained there until it was moved back within the wheelbase for the 964 models.

911S models also gained a discreet spoiler under the front bumper to improve high-speed stability. With the car's weight 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) 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
Targa Florio
The Targa Florio was an open road endurance automobile race held in the mountains of Sicily near Palermo. Founded in 1906, it used to be the oldest sports car racing event, part of the World Championship until 1973...

.

Carrera RS (1973 and 1974)



These models, valued by collectors, are considered by many to be the greatest classic 911s all-time. RS stands for Rennsport in German
German language
German is a West Germanic language, thus related to and classified alongside English and Dutch. It is one of the world's major languages and the most widely spoken first language in the European Union. Around the world, German is spoken by approximately 105 million native speakers and also by...

, meaning motorsport or circuit racing. The Carrera name was reintroduced from the 356
Porsche 356
The Porsche 356 was the company's first production automobile. It was a lightweight and nimble handling rear-engine rear-wheel-drive 2 door sports car available in hardtop and convertible configurations. Design innovations continued during the years of manufacture, contributing to its motorsports...

 Carrera which had itself been named after Porsche's victories in the Carrera Panamericana
Carrera Panamericana
The Carrera Panamericana was a sports car racing event on open roads in Mexico, similar to the Mille Miglia and Targa Florio in Italy. It ran from a southern Mexican west-coast city towards Texas, and counted towards the World Sportscar Championships. Running from 1950 to 1955, it was widely held...

 races in Mexico
Mexico
The United Mexican States , commonly known as Mexico , is a federal constitutional republic in North America. It is bordered on the north by the United States; on the south and west by the Pacific Ocean; on the southeast by Guatemala, Belize, and the Caribbean Sea; and on the east by the Gulf of...

 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 with MFI, revised and stiffened suspension
Suspension (vehicle)
Suspension is the term given to the system of springs, shock absorbers and linkages that connects a vehicle to its wheels. Suspension systems serve a dual purpose – contributing to the car's roadholding/handling and braking for good active safety and driving pleasure, and keeping vehicle occupants...

, a "ducktail" rear spoiler, larger brake
Brake
A brake is a device for applying a force against the friction of the road, slowing or stopping the motion of a machine or vehicle, or alternatively a device to restrain it from starting to move again. The kinetic energy lost by the moving part is usually translated to heat by friction...

s, wider rear wheels and rear wings. 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
Fédération Internationale de l'Automobile
The Fédération Internationale de l'Automobile, commonly referred to as the FIA, is a non-profit association established as the Association Internationale des Automobile Clubs Reconnus on June 20, 1904 to represent the interests of motoring organisations and motor car users...

 Group 4
Group 4 (racing)
The Group 4 racing class referred to regulations for cars in sportscar racing, GT racing and rallying, as regulated by the FIA. The Group 4 class was replaced by Group B for the 1983 season.-Production requirements:...

 class. 49 Carrera RS cars were built with 2808 cc engines producing 300 PS (221 kW).

In 1974, Porsche created the Carrera RS 3.0 with K-Jetronic Bosch
Robert Bosch GmbH
Robert Bosch GmbH is a German diversified technology-based corporation which was started in 1886 by Robert Bosch in Stuttgart, Germany.Robert Bosch GmbH is the world's largest supplier of automobile components and has business relationships with virtually every automobile company in the world. The...

 fuel injection
Fuel injection
Fuel injection is a system for mixing fuel with air in an internal combustion engine. It has become the primary fuel delivery system used in gasoline automotive engines, having almost completely replaced carburetors in the late 1980s....

 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
Chassis
A chassis consists of a framework that supports an inanimate object, analogous to an animal's skeleton, for example in a motor vehicle or a firearm.- Examples of use :...

 was largely similar to that of the 1973 Carrera RSR and the brake system was from the Porsche 917
Porsche 917
The Porsche 917 is a racecar that gave Porsche its first overall wins at the 24 Hours of Le Mans in 1970 and 1971. Powered by the Type 912 flat-12 engine of 4.5, 4.9, or 5 litres, the long-tailed version was capable of a 0- time of 2.7 seconds and a top speed of over .All of the 917 verisons in...

. 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 and Carrera RSR Turbo (its 2.1 L engine due to a 1.4x equivalency formula) were made in tiny numbers for racing. The turbo car came second at the 24 Hours of Le Mans
24 Hours of Le Mans
The 24 Hours of Le Mans is the world's oldest sports car race in endurance racing, held annually since near the town of Le Mans, Sarthe, France...

 in 1974, a significant event in that its engine would form the basis of many future Porsche attempts in sportscar racing, and can be regarded as the start of its commitment to turbocharging.

2.7-litre / G, H, I and J series (1973–1976)


MY
Model year
The model year of a product is a number used worldwide, but with a high level of prominence in North America, to describe approximately when a product was produced, and indicates the coinciding base specification of that product....

 1974 saw three significant changes. First, the engine size was increased to 2687 cc giving an increase in torque
Torque
Torque, also called moment or moment of force , is the tendency of a force to rotate an object about an axis, fulcrum, or pivot. Just as a force is a push or a pull, a torque can be thought of as a twist....

. Second, was the introduction of impact bumper
Bumper
An automobile's bumper is the front-most or rear-most part, ostensibly designed to allow the car to sustain an impact without damage to the vehicle's safety systems...

s 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
Robert Bosch GmbH
Robert Bosch GmbH is a German diversified technology-based corporation which was started in 1886 by Robert Bosch in Stuttgart, Germany.Robert Bosch GmbH is the world's largest supplier of automobile components and has business relationships with virtually every automobile company in the world. The...

 fuel injection
Fuel injection
Fuel injection is a system for mixing fuel with air in an internal combustion engine. It has become the primary fuel delivery system used in gasoline automotive engines, having almost completely replaced carburetors in the late 1980s....

 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 (110 and 129 kW) respectively.

Carrera 2.7 / G and H series (1974-1975)


The Carrera 2.7, now a regular production model, inherited the wider rear wings of the RS together with its 210 PS (154 kW) MFI engine and was indeed mechanically identical to the 1973 RS and still weighed the same at 1075 kg (2370 lb). All three models were given high backed front seats.

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 (147 kW).

The well known problem of pulled cylinder head studs with the K-Jetronic 2.7 engine only occurred in hot climates. This emerged in 1975 in California where thermal reactors, aimed at reducing emissions, were fitted below the cylinder head
Cylinder head
In an internal combustion engine, the cylinder head sits above the cylinders and consists of a platform containing part of the combustion chamber and the location of the valves and spark plugs...

s thus causing heat build up around the magnesium crankcase
Crankcase
In an internal combustion engine, the crankcase is the housing for the crankshaft. The enclosure forms the largest cavity in the engine and is located below the cylinder block....

 and then made worse by the lean running K-Jetronic CIS. The fitting of a 5-blade engine fan instead of the usual 11-blade further compounded the situation.
Bearing in mind Porsche's largest market being the USA, the 930 Turbo, Carrera 3.0 and all subsequent models used aluminium alloy crankcases which were around heavier.

The Bosch K-Jetronic CIS varied fuel pressure to the injectors dependent on the mass airflow. While this system was exceedingly reliable, it did not allow the use of as "hot" cams as MFI or carburettors allowed. Therefore the 911S's horsepower decreased from 190–175 PS (140–128 kW) despite the displacement increase from 2.4–2.7 L. However, the engine did have increased drivability.
The 210 PS (154 kW) Carrera 2.7 with MFI was not sold in the US owing to emission regulations— instead they received a 'Carrera' fitted with a 911S engine producing , later reduced to 165 (121 kW), and in California even down to 160 PS (118 kW).

Also produced for 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 2.0 Volkswagen
Volkswagen
The Volkswagen Aktiengesellschaft , also known as Volkswagen Group or as VW, is an automobile manufacturer and mobility organisation based in Wolfsburg, Lower Saxony, Germany and is the pioneer brand within the Volkswagen Group, which contains the car brands Audi AG, Bentley Motors Ltd.,...

 engine from the Porsche 914
Porsche 914
The Porsche 914 was a mid-engined sports car built and sold collaboratively by Volkswagen and Porsche from 1969 through 1976.- Development :...

. In all, 2099 units were produced. In 1976 the Porsche 924
Porsche 924
The Porsche 924 is an automobile produced by Porsche AG of Germany from 1976 to 1988. A two-door, 2+2 coupé, the 924 replaced the 914 as the company's entry-level model, and was the model that finally retired the 912. It was the first Porsche model powered by a water-cooled, front-mounted engine to...

 took this car's place for the 1977 "model year" and beyond. The power was supplied by a 4 cylinder high performance fuel injection motor also used in the 411 Volkswagen. Less than 6000 were built.

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 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 , it rose to 3.3 L 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
Porsche 934
The Porsche 934 was a racing version of the Porsche 911 Turbo, prepared to FIA Group 4 rules, similar to the Porsche 935 which was prepared to FIA Group 5 rules.-History:...

 of 1976. Many participated at Le Mans and other races including some epic battles with the BMW 3.0 CSL "Batmobile"
BMW E9
The BMW New Six CS is the two-door sport coupé in BMW's New Six line, produced from 1968 to 1975 alongside the four-door BMW E3 sedan....

. The wilder Porsche 935
Porsche 935
The Porsche 935 was introduced in 1976, as the factory racing version of the Porsche 911 turbo prepared for FIA-Group 5 rules. It was an evolution of the Porsche Carrera RSR 2.1 turbo prototype which had scored 2nd overall in the 1974 24 Hours of Le Mans....

, a finer tuned car in FIA Group 5 and evolved from the 2.1 L RSR Turbo of 1974, was campaigned in 1976 by the factory and won Le Mans in 1979. Private teams continued to compete successfully with the car until well into the 1980s.

Due to tightening emission
Emission
Emission may refer to:* Flue gas, also:** Exhaust gas, flue gas occurring as a result of the combustion of a fuel* Emission of air pollutants* Emission , the process by which the energy of a photon is released by another entity...

s regulations, the 930 was withheld from the important US and Japanese markets from 1981 through 1985. In the same time period, Porsche was involved in several wrongful death lawsuits in California
California
California is the most populous state in the United States, and the third largest by area. California is the second most populous sub-national entity in the Americas, behind only São Paulo, Brazil...

 related to the 930. It was finally 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. Although these cars could be sold for extraordinary premiums over the standard models, the company's reluctance to invest in research and development of the entire 911 line at that time turned out to be an almost fatal decision not only for the 911, but for the company.

Only in 1989, its last year of production, was the 930 equipped with a five-speed gearbox. The 930 was replaced in 1990 with a 964
Porsche 964
The Porsche 964 is the company's internal name for the version of the Porsche 911 model manufactured and sold between 1989 and 1993. It featured significant styling revisions over previous versions of the 911, most prominently the more integrated bumpers , although it was still obviously a 911...

 version featuring the same 3.3 L engine.

There have been turbocharged variants of each subsequent generation of 911.

SC / L, M, A, B, C and D series (1977–1983)


Starting in MY
Model year
The model year of a product is a number used worldwide, but with a high level of prominence in North America, to describe approximately when a product was produced, and indicates the coinciding base specification of that product....

 1978, the new 3.0 L 911 SC (2994 cc) was now the basic 911 model. It was in effect a Carrera 3 (known as a 911S in the US) detuned
Tuning
Tuning can refer to:*Musical tuning**Guitar tunings**Piano tuning*Radio tuning: see tuner*Tuning properties of neurons: see neuronal tuning*Car tuning**Engine tuning*Database tuning*Self-tuning...

 to provide 180 PS (132 kW). The "SC" designation was reintroduced by Porsche for the first time since the 356 SC
Porsche 356
The Porsche 356 was the company's first production automobile. It was a lightweight and nimble handling rear-engine rear-wheel-drive 2 door sports car available in hardtop and convertible configurations. Design innovations continued during the years of manufacture, contributing to its motorsports...

 (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 power was increased to 188 PS (138 kW) for 1980, then finally to 204 PS (150 kW).

In model year 1980, Porsche offered a Weissach
Weissach
Weissach is a municipality in the district of Böblingen in Baden-Württemberg in Germany.The Weissach axle is named after the town, where the research centre of Porsche is located....

 special edition version of the 911 SC, named after the town in Germany
Germany
Germany , officially the Federal Republic of Germany , is a country in Central Europe. It is bordered to the north by the North Sea, Denmark, and the Baltic Sea; to the east by Poland and the Czech Republic; to the south by Austria and Switzerland; and to the west by France, Luxembourg, Belgium,...

 where Porsche has their research
Research
Research can be defined to be search for knowledge or any systematic investigation to establish facts. The primary purpose for applied research is discovering, interpreting, and the development of methods and systems for the advancement of human knowledge on a wide variety of scientific matters of...

 center. Designated M439, it was offered in two colors with the turbo whale tail & front chin spoiler, body color-matched Fuchs
Fuchs
- Industry :* Fuchs Petrolub, the world's largest independent manufacturer of lubricants, and related speciality products.* Fuchs Group, spice company based in Germany- People :* Arved Fuchs , writer and adventurer...

 alloy wheels and other convenience features as standard. 408 cars were built for North America. In 1982, a Ferry Porsche
Ferdinand Anton Ernst Porsche
Ferdinand Anton Ernst Porsche , mainly known as Ferry Porsche, was an Austrian technical automobile designer and automaker-entrepreneur. He operated Porsche AG in Stuttgart, Germany. His father, Ferdinand Porsche Sr was also a renowned automobile engineer. His nephew, Dr...

 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
Suspension (vehicle)
Suspension is the term given to the system of springs, shock absorbers and linkages that connects a vehicle to its wheels. Suspension systems serve a dual purpose – contributing to the car's roadholding/handling and braking for good active safety and driving pleasure, and keeping vehicle occupants...

, the rear spoiler
Spoiler (automotive)
A spoiler is an automotive aerodynamic device whose intended design function is to 'spoil' unfavorable air movement across a body of a vehicle in motion. Spoilers on the front of a vehicle are often called air dams, because in addition to directing air flow they also reduce the amount of air...

, front rubber lip and black Fuchs wheels.

In 1981 a Cabriolet
Convertible
A convertible is a type of automobile in which the roof can retract and fold away, converting it from an enclosed to an open-air vehicle. Many different automobile body styles are manufactured and marketed in convertible form....

 concept car was shown at the Frankfurt Motor Show. Not only was the car a true convertible, but it also featured four-wheel drive
Four-wheel drive
Four-wheel drive, 4WD, 4x4 , or AWD is a four-wheeled vehicle with a drivetrain that allows all four wheels to receive torque from the engine simultaneously...

, although this was dropped in the production version. The first 911 Cabriolet debuted in late 1982, as a 1983 model. This was Porsche’s first cabriolet since the 356
Porsche 356
The Porsche 356 was the company's first production automobile. It was a lightweight and nimble handling rear-engine rear-wheel-drive 2 door sports car available in hardtop and convertible configurations. Design innovations continued during the years of manufacture, contributing to its motorsports...

 of the mid-1960s. It proved very popular with 4,214 sold in its introductory year, despite its premium price relative to the open-top targa. Cabriolet versions of the 911 have been offered ever since.

It was during this time, that Porsche AG decided the long-term fate of the 911. In 1979 Porsche had made plans to replace the 911 with their new 928
Porsche 928
The Porsche 928 is a grand tourer automobile sold by Porsche AG of Germany from 1978-1995, designed as a more luxurious yet still high performance alternative to the firm's sporting mainstay, the durable 911 sports car....

. Sales of the 911 remained so strong however, that Porsche revised its strategy and decided to inject new life into the 911 editions.

Peter W. Schutz
Peter W. Schutz
Peter W. Schutz was the president and CEO of Porsche between 1981 and 1986, a time in which the company greatly expanded sales, primarily in the United States. Today he is a motivational speaker and co-founder of Harris and Schutz Inc., with his wife Sheila Harris-Schutz.-Early life and...

 (CEO Porsche AG 1981-1987) wrote:

“The decision to keep the 911 in the product line occurred one afternoon in the office of Dr Helmuth Bott http://de.wikipedia.org/wiki/Helmuth_Bott, the Porsche operating board member responsible for all engineering and development. I noticed a chart on the wall of Professor Bott’s office. It depicted the ongoing development schedules for the three primary Porsche product lines: 944
Porsche 944
A sports car built by Porsche between 1982 to 1991. It was built on the same platform as the 924, although 924 production continued through 1988. The 944 was intended to last into the 1990s, but major revisions planned for a 944 S3 model were eventually rolled into the 968 instead, which replaced...

, 928
Porsche 928
The Porsche 928 is a grand tourer automobile sold by Porsche AG of Germany from 1978-1995, designed as a more luxurious yet still high performance alternative to the firm's sporting mainstay, the durable 911 sports car....

 and 911. Two of them stretched far into the future, but the 911 program stopped at the end of 1981. I remember rising from my chair, walking over to the chart, taking a black marker pen, and extending the 911 program bar clean off the chart. I am sure I heard a silent cheer from Professor Bott, and I knew I had done the right thing. The Porsche 911, the company icon, had been saved, and I believe the company was saved with it.”


911 SC sales totaled 58,914 cars.

3.2 Carrera / E, F, G, H, I, J and K series (1983–1989)


With the 911’s future ensured , 1983 saw the launch of a replacement for the successful SC series. It was the MY
Model year
The model year of a product is a number used worldwide, but with a high level of prominence in North America, to describe approximately when a product was produced, and indicates the coinciding base specification of that product....

 1984 911 3.2 Carrera, reviving the Carrera name for the first time since 1975. The 911 3.2 Carrera was the last iteration in the original 911 series, with all subsequent models featuring new body styling with new brake
Brake
A brake is a device for applying a force against the friction of the road, slowing or stopping the motion of a machine or vehicle, or alternatively a device to restrain it from starting to move again. The kinetic energy lost by the moving part is usually translated to heat by friction...

, electronic and suspension
Suspension (vehicle)
Suspension is the term given to the system of springs, shock absorbers and linkages that connects a vehicle to its wheels. Suspension systems serve a dual purpose – contributing to the car's roadholding/handling and braking for good active safety and driving pleasure, and keeping vehicle occupants...

 technologies.

A new higher displacement motor, a 3.2 liter horizontally opposed flat 6 cylinder
Cylinder (engine)
A cylinder is the central working part of a reciprocating engine, the space in which a piston travels. Multiple cylinders are commonly arranged side by side in a bank, or engine block, which is typically cast from aluminum or cast iron before precision features are machined into it...

, was utilized. At the time, Porsche claimed it was 80% new. The new swept volume of 3164 cc was achieved using the bore (from the previous SC model) combined with the 1978 Turbo 3.3 crankshaft's stroke. In addition, higher domed pistons increased the compression ratio
Compression ratio
The compression ratio of an internal-combustion engine or external combustion engine is a value that represents the ratio of the volume of its combustion chamber; from its largest capacity to its smallest capacity...

 from 9.8 to 10.3:1 (although only 9.5:1 for the US market). New inlet manifold
Manifold
In mathematics, more specifically in differential geometry and topology, a manifold is a mathematical space that on a small enough scale resembles the Euclidean space of a certain dimension, called the dimension of the manifold....

 and exhaust system
Exhaust system
An exhaust system is usually tubing used to guide reaction exhaust gases away from a controlled combustion inside an engine or stove. The entire system conveys burnt gases from the engine and includes one or more exhaust pipes...

s were fitted. The 915 transmission
Transmission (mechanics)
A transmission or gearbox provides speed and torque conversions from a rotating power source to another device using gear ratios, including for a motor vehicle partly because of the limitations of internal combustion engines...

 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
Getrag
Getrag is a leading manufacturer of automobile manual transmissions. The company was founded on 1 May, 1935 in Ludwigsburg, Germany by Hermann Hagenmeyer as the Getriebe- und Zahnradfabrik Hermann Hagenmeyer AG...

, model number G50 with proven Borg-Warner synchronizers. This slightly heavier version also featured a hydraulically-operated clutch
Clutch
A clutch is a mechanism for transmitting rotation, which can be engaged and disengaged. Clutches are useful in devices that have two rotating shafts. In these devices, one shaft is typically driven by a motor or pulley, and the other shaft drives another device. In a drill, for instance, one shaft...

.

With the new engine, power was increased to at 5900 rpm for North America
North America
North America is the northern continent of the Americas, situated in the Earth's northern hemisphere and in the western hemisphere. It is bordered on the north by the Arctic Ocean, on the east by the North Atlantic Ocean, on the southeast by the Caribbean Sea, and on the west by the North Pacific...

n-delivered cars and to at 5900 rpm for most other markets. This version of the 911 accelerated 0– in 5.4 seconds and had a top speed of as measured by Autocar
Autocar
Autocar is a weekly British automobile magazine published by Haymarket Motoring Publications Ltd. It is the oldest surviving car magazine in the world.-History:...

. Factory times were more modest: 0-60 mph time of 6.3 seconds for the US version and 6.1 seconds for cars outside the American market.

The disc brake
Disc brake
The disc brake or disk brake is a device for slowing or stopping the rotation of a wheel. A brake disc , usually made of cast iron or ceramic composites , is connected to the wheel and/or the axle...

s were increased in size to aid in more effective heat dissipation and improved oil-fed chain tensioners were fitted to the engine. To improve oil cooling, a finned cooler replaced the serpentine lines in the front passenger fender well. This was further improved in 1987, with the addition of a thermostatically-controlled fan.

Driving refinement and motor reliability were improved with an upgrade of the fuel and ignition control components to a L-Jetronic with Bosch
Robert Bosch GmbH
Robert Bosch GmbH is a German diversified technology-based corporation which was started in 1886 by Robert Bosch in Stuttgart, Germany.Robert Bosch GmbH is the world's largest supplier of automobile components and has business relationships with virtually every automobile company in the world. The...

 Motronics 2 DME (Digital Motor Electronics system). An improvement in fuel-efficiency was due to the DME providing a petrol cut-off on the overrun. Changes in the fuel map & chip programming from October 1986, further improved the power to at 5900 rpm for North American delivered cars as well as for other markets requesting low emissions, like Germany. Custom-mapped chips remain a popular upgrade. The fuel relay that is mounted externally on the DME is known to be a weak point of the system.

Three basic models were available throughout the Carrera years – coupe
Coupé
A coupé or coupe is a closed car body style, the precise definition of which varies from manufacturer to manufacturer, and over time...

, targa
Targa top
Targa top, targa for short, is a semi-convertible car body style with a removable roof section and a full width roll bar behind the seats. The rear window can be fixed or removable, making it a convertible-type vehicle...

 and cabriolet
Convertible
A convertible is a type of automobile in which the roof can retract and fold away, converting it from an enclosed to an open-air vehicle. Many different automobile body styles are manufactured and marketed in convertible form....

. When launched in 1984 in the United States, the prices of the 911 Carrera lineup were $31,950 for the coupe, $33,450 for the targa and $36,450 for the cabriolet. Almost indistinguishable from the SC, external clues are the front fog lights, which were integrated into the front valance in the Carrera. Very modest cosmetic changes were made throughout the lifespan of the Carrera, with a redesigned dash featuring larger air conditioning vents appearing in 1986.

Two special editions of the Carrera were produced – the "Commemorative Edition" in 1988 to commemorate 250,000 911s produced and an "Anniversary" edition in 1989 which was the model’s 25th year of production. Both were cosmetic packages with limited production.

In 1984, Porsche also introduced the M491 option. Officially called the Supersport, it was commonly known as the "Turbo-look". It was a style that resembled the Porsche 930
Porsche 930
The 930 was a sports car built by Porsche, 930 actually being the "type number" for the pre-964 generation 911 Turbo produced between 1975 and 1989...

 Turbo with wide wheel arches and the distinctive "tea tray” tail. It featured the stiffer turbo suspension and the superior turbo braking system as well as the wider turbo wheels. Sales of the Supersport were particularly strong for its first two years in the United States because the desirable 930
Porsche 930
The 930 was a sports car built by Porsche, 930 actually being the "type number" for the pre-964 generation 911 Turbo produced between 1975 and 1989...

 was not available.

The 911 Speedster (option M503), a low-roof version of the Cabriolet which was evocative of the Porsche 356
Porsche 356
The Porsche 356 was the company's first production automobile. It was a lightweight and nimble handling rear-engine rear-wheel-drive 2 door sports car available in hardtop and convertible configurations. Design innovations continued during the years of manufacture, contributing to its motorsports...

 Speedster of the 1950s, was produced in limited numbers (2.104) starting in January 1989 until July 1989 as both a narrow body car and a Turbo-look.
The narrow version was produced only 171 times, that means for the lucky owners an exclusive car from the very beginning. It started as a design under Helmuth Bott in 1983 but was not manufactured until six years later. It was a two-seat convertible that featured a low swept windshield.

The 1987 Carrera Club Sport, of which 340 were produced, is a collectible 911 that had a blueprinted engine with a higher rev limit, and had the electric windows, electric seats, and radio removed to save a claimed 50 kg (110 lb) in weight.

Total production of the 911 3.2 Carrera series was 76,473 cars (35,670 coupé, 19,987 cabrio, 18,468 targa).

In late 1989, the 911 underwent a major evolution, with the introduction of the Type Porsche 964
Porsche 964
The Porsche 964 is the company's internal name for the version of the Porsche 911 model manufactured and sold between 1989 and 1993. It featured significant styling revisions over previous versions of the 911, most prominently the more integrated bumpers , although it was still obviously a 911...

 (1989–1993).

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
Porsche 928
The Porsche 928 is a grand tourer automobile sold by Porsche AG of Germany from 1978-1995, designed as a more luxurious yet still high performance alternative to the firm's sporting mainstay, the durable 911 sports car....

 in 1971. Larger, and featuring a front-mounted V8 engine considerably more powerful than the contemporary 911's flat six, the 928 was intended to be a comfortable grand tourer
Grand tourer
A grand tourer is a high-performance luxury automobile designed for long-distance driving. The most common format is a two-door coupé with either a two-seat or a 2+2 arrangement....

 rather than a dedicated sports car. Capable of out-accelerating the 911, though not matching its cornering prowess, the 928 sold reasonably well from its introduction in 1977 until its discontinuation in 1995. In spite of its overall capability, it never outsold the 911. Unlike its smaller, sportier sibling, it achieved little success in racing.

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
    Philip Raby
    Philip Raby is a UK motoring journalist who writes about Porsche. In 2005 he set up his own Porsche magazine called Total 911. He also runs a service that helps people to buy Porsches.-Work:...

    , 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