User:Donnie Park/Porsche 911 Carrera RS

Porsche 911 Carrera RS was a of the Porsche 911

In 2004, Sports Car International placed the 911 Carrera RS 2.7 eighth on a list of Top Sports Cars of the 1970s, and nominated it 6th in the top sports car of all time. Similarly, Popular Mechanics placed it 26th in the "Hottest Car of All Time."

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Beginning
During the start of the second production run of the 2.4 liter 911 S, a special lightweight model was announced and to be given the Carrera nomenclature given at the time by Porsche to designate high performance models

This version featured widened rear fenders to accommodate 7 inch wide wheels, rear spoiler to reduce aerodynamic lift at high speeds and an enlarged 2687 cc engine achieved by increasing the bore from 84 to 90 mm.

was restricted by regulations that did not allow the car

to be bored out more than 2500 cc for a 2.4 liter engine did not allow the car to be lightened beyond the homologated weight of the standard car (995) allowed the fenders to be widened by no more than 2 inches of each side to cover wider wheels and tires that was not allowed to protrude beyond the wings did not allow body to be modified to the body contour above hub level (except for the fenders) which prevented the use of aerodynamic aids not specified in the standard car

By producing a minimum of 500 examples of the 911 S required for Group 4 (for Special Gran Turismo cars that was lighter, had wider rear wings (by 2 inches) with rear spoiler to improve rear wheel traction

increased bore meant the possibilities of competing in the 2501-3000cc class

it enable the possibilities of the 911 as a competition car

911 Carrera RS 2.7 (F-series)
The 911 S was introduced in

was the first 911 to bear the Carrera nonclamature

distinguished easily by it's ducktail spoiler

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 built to meet motorsport homologation requirements. Compared to a standard 911S, the Carrera 2.7 RS had a larger engine (2687 cc) developing 210 PS with Bosch (Kugelfischer) mechanical fuel injection, revised and stiffened suspension, a "ducktail" rear spoiler, larger brakes, wider rear wheels and rear fenders. In RS Touring form it weighed 1075 kg (2370 lb), in Sport Lightweight form it was about 100 kg (220 lb) lighter, the saving coming from thin gauge steel used for parts of the body shell and also the use of thinner glass. In total, 1,580 were made, and qualified for the FIA Group 4 class. 49 Carrera RS cars were built with 2808 cc engines producing 300 PS (221 kW).

received a specially designed 915/08 gearbox

911 Carrera RSR 2.8 (1972)
For the 1974 IROC Championship (which started in Dec. 1973), 1973 Carrera RSR models were fitted with the 3.0 engine and a flat "whale tail" in place of the ducktail spoiler.

911 Carrera RS 3.0 (G-series)
In 1974, Porsche created the Carrera RS 3.0 with mechanical fuel injection producing 230 PS (169 kW). 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 brake system was from the Porsche 917. The use of thinner metal plate panels and a spartan interior enabled its weight to be reduced to around 900 kg (1984 lb).

911 Carrera RSR 3.0 (1973-74)
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 L 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 Porsche 917, was Porsche's commitment to turbocharger applications in its cars.

911 Carrera RS (964)
2,391 were produced

In 1992, Porsche produced a super-lightweight, rear-wheel-drive only version of the 964 dubbed Carrera RS for the European market. It was based on Porsche's 911 "Carrera Cup" race car and harked back to the 2.7 and 3.0 RS and RSR models. It featured a revised version of the standard engine, titled M64/03 internally, with an increased power output of 260 bhp and lightweight flywheel coupled to the G50/10 transmission with closer ratios, asymmetrical Limited Slip Differential and steel syncromesh. A track-oriented suspension system with 40 mm lower ride height, stiffer springs, shocks and adjustable stabilizer bars without power steering (RHD UK cars did have power steering).

A stripped-out interior devoid of power windows or seats, rear seats, air conditioning, cruise control, sound deadening or a stereo system (optionally fitted) and new racing-bucket front seats were part of the package. The trunk hood was made of aluminum, the chassis was seam welded and sound deadening was deleted. Wheels were made of magnesium and the glass was thinner in the doors and rear window. The Carrera RS is approximately 345 pounds (155 kg) lighter than the US version Carrera 2 model. Also available were a heavier Touring variant (with sound deadening, power seats (optional), undercarriage protection and power windows) and an N/GT racing variant with a stripped, blank metal interior and a roll cage. They also came with optional lights on the visors.

A later ultra-limited production version, the Carrera 3.8 RS featuring the Turbo body and a 300 bhp 3.8 litre version of the M64 motor was sold briefly in Europe. This engine was bored out by 2 mm for a total of 3,746 cc, and was also available in a more powerful competition version called the 3.8 RSR.

The Carrera RS was not sold in the United States because Porsche Cars North America felt the car's aggressive tuning was not suited to the American market. In 1992, 45 USA-legal cars that were very similar to the Carrera RS were imported to the USA for a proposed "Porsche Carrera Cup" racing series. This Carrera Cup series was to function as a support race for the American CART racing series just as European Carrera Cup has supported Formula One.

These 45 cars were identical to a Carrera RS other than having airbags (with required electric windows), alarm system, American lighting, American bumpers, aluminum wheels, and standard seats. The cars otherwise had the lightweight seam welded chassis, lightweight interior trim, aluminum hood, lightweight door glass, suspension, brakes, G50/10 transmission and M64/03 engine etc. of the Carrera RS. These cars were approximately 200 pounds (90 kg) lighter than a normal USA Carrera 2 model.

The plan was for Andial, the then equivalent of what is now Porsche Motorsport USA, to convert these cars to full racing specification, however, due to lack of sponsor support for the Carrera Cup series, it was cancelled before it began. The 45 cars imported to the USA for this series were then sold, quietly without any advertising so as not to compete with the new RS America, through normal dealer channels. These cars were supplied with a dash plaque which indicated that they were the "Carrera Cup USA Edition".

In order to please devoted American 911 enthusiasts who wanted an RS model, Porsche produced the RS America. The RS America was produced as a model year 1993 and 1994 car based on the USA Carrera 2. The cars were offered in standard colors red, black and white and optional colors midnight blue metallic and polar silver. Several paint to order cars were manufactured in speed yellow. The RS America featured a distinctive "whale tail" spoiler, a partially stripped interior with flat door panels (from the European RS) and carpeting along with a luggage shelf replacing the rear seats. Cloth covered sports seats, 17 inch wheels and M030 Sports Suspension were fitted as standard. The logo "RS America" was written on the deck lid along with an "RS" logo in front of the rear wheels. Deleted to save weight were power steering, cruise control, powered side mirrors, air-conditioning, sunroof and radio, although the air-conditioning, sunroof and radio as well as a limited slip differential could be ordered as options. The RS America was listed by Porsche as weighing 2,954 pounds (1,340 kg), 77 pounds (35 kg) lighter than the weight listed for a stock Carrera 2. The standard USA Carrera 2 brakes, engine and gearbox were used.

Engine
Engine Design: Air-cooled or oil-cooled, horizontally opposed (flat), dry-sump lubrication, rear-mounted engine

Displacement: 3,600 cc (220 cu in)

Cylinders: Six

Bore and Stroke: 3.94 x 3.01 in (100.0 x 76.4 mm)

Compression ratio: 11.3 : 1

Fuel/Ignition: Electronic fuel injection, DME controller, twin-spark with knock regulation

Crankshaft: Forged, 8 main bearings

Block and heads: aluminum alloy

Valve Train: Overhead cam, one per bank, double chain drive

Power: 191 kW/260 hp (SAE net) at 6,100 rpm

Torque: 312 N·m/230 lb·ft at 4,800 rpm