The Porsche 964, part 2

The Speedster, a low-roof convertible version of the 964, returned in October 1992. Based on the Carrera 2, the Speedster was available either in standard or in lightweight, Clubsport trim. Unlike its predecessor, the 911 Speedster, the 964 Speedster was not available with the "Turbo-Look" wider rear arches. As a result, the sales of the 964 edition were disappointing: only 925 units were built in two years, vs 2065 for the previous generation, including 1984 "Turbo-Look". Still, 20 very exclusive "Turbo-Look" units were made as special orders.

Porsche introduced the 964 Turbo model in 1991 as the successor to the 930. Unfortunately, they hadn't had the necessary time to develop a turbocharged version of the 3.6 litre M64 engine, and choose to re-use the 3.3 litre engine from the 930, with several minor revisions that made the engine smoother, less prone to turbo-lag and more powerful, with a total output of 320 bhp (235 kW) @ 5750 rpm. 3,660 964 Turbos were built in total.

Porsche released the 964 Turbo 3.6, also sometimes referred to as the 964 Turbo II three years later in 1994, now featuring a turbocharged version of the 3.6 litre M64 engine and producing 360 bhp (265 kW) @ 5500 rpm, the 3.6 litre powered Turbo was produced only for the 1994 model year, with fewer than 2,000 of them produced in total, making it one of the rarest and most sought after Porsches produced since the 959.

In 1994, the Turbo S was also introduced. With a power of 385 hp, it was one of the fastest cars on the road. The Turbo S was available either with the traditional 964 Turbo 3.6 body, or with the exclusive Flatnose (Flachbau) aka Slantnose option. Option X83 (Japan), X84 (ROW) and X85 (USA), the Turbo S Flatnose, was available in the U.S.A. as a $60,179 USD option on top of the base price $99,000 USD Turbo 3.6. The "Flatnose" option was available when ordering the no charge '36S' option '1994 Turbo "S" Model'. In addition to the Flatnose fenders, it also included the 'X88' option or 'Turbo S' motor, the 'X92' Exclusive front spoiler, 'X93' Exclusive rear spoiler and 'X99' Exclusive rear fender vents. The flatnose option was designed around the model 968 front end for the ROW and USA versions and the 930 style Turbo S front end for Japan (right down to the sill covers on the fenders). 39 Models were made for US markets, 27 for the Rest of the world, and 10 for Japan all in Polar Silver.

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The Porsche 964, part 1

The Porsche 964, spoken simply as "nine-six-four" or "nine-sixty-four," is the company's internal name for the version of the Porsche 911 model sold between 1989 and 1993. It featured significant styling revisions over previous versions of the 911, most prominently the more integrated bumpers (fenders), although it was still obviously a 911. It was the first generation of Carrera to be offered with Porsche's Tiptronic automatic transmission (as an option) as well as the first generation to be offered with all wheel drive.

The first 964s available in 1989 were AWD equipped "Carrera 4" models, Porsche added the rear wheel drive Carrera 2 variant to the range in 1990. Both variants were available as a coupe, Targa or Cabriolet. The 964 Carrera was the last generation sold with the traditional "pop top" Targa roof. Later evolutions of the Targa, starting with the 993 generation, replaced that setup with a complex glass-roof "greenhouse" system. A new naturally-aspirated engine called the M64 was used for 964 models, which displaced 3.6 litres and produced 247 bhp (184 kW) @ 6100 rpm.

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 harkened 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 (191 kW) 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. A stripped-out interior devoid of power windows or seats, rear seats, air conditioning, cruise control, sound deadening or a stereo system 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 lighter than a USA Carrera 2 model. Also available were a heavier Touring variant (with sound deadening, power seats (if desired), undercarriage protection and power windows) and an N/GT racing variant with a stripped, blank metal interior and a roll cage.

A later ultra-low production version of the RS featuring the Turbo body and a 300 bhp 3.8 litre version of the M64 motor was sold briefly in Europe (Carrera RS 3.8).

The Carrera RS was not sold in the USA 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 USA's CART racing series just as European Carrera Cup supported Formula One racing at the time.

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 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 canceled 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 based on the Carrera 2 and featured the M030 suspension, a partially stripped interior without sound deadening, power steering, power amenities, rear seats or a stereo and had cloth-covered sport seats. The RS America was approx. 160 pounds lighter than a stock Carrera 2 and shipped with the standard 247 hp North American engine.

READ MORE - The Porsche 964, part 1

The Porsche 930

The 930 (usually pronounced nine-thirty) 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. It was Porsche's top-of-the-range model for its entire production duration and at the time of its introduction the fastest production car available in Germany.

Porsche began experimenting with turbocharging technology on their race cars during the late 1960s, and in 1972 began development on a turbocharged version of the 911. Porsche originally needed to produce the car in order to comply with homologation regulations and had intended on marketing it as a street legal race vehicle like the 1973 Carrera 2.7 RS. When the homologation rules changed, Porsche continued to develop the car anyway, deciding to make it a fully-equipped variant of the 911 that would top the model range and give Porsche a more direct competitor to vehicles from Ferrari and Lamborghini, which were more expensive and more exclusive than the standard 911. Although Porsche no longer needed the car to meet homologation requirements, it proved a viable platform for racing vehicles, and became the basis for the 934 and 935 race cars.

Ferdinand "Ferry" Porsche, who was running the company at the time, handed development of the vehicle over to Ernst Fuhrmann, who adapted the turbo-technology originally developed for the 917/30 CAN-AM car to the 3.0 litre flat-six from the Carrera RS 3.0, creating what Porsche internally dubbed as 930. Total output from the engine was 260 hp (DIN), much more than the standard Carrera. In order to ensure that the platform could make the most of the higher power output, a revised suspension, larger brakes and stronger gearbox became part of the package, although some consumers were unhappy with Porsche's use of a 4-speed gearbox whilst a 5-speed was available in the "lesser" Carrera. A "Whale-Tail" rear spoiler was installed to help vent more air to the engine and help create more downforce at the rear of the vehicle, and wider rear wheels with upgraded tires combined with flared wheelarches were added to increase the 911's width and grip, making it more stable.

Porsche badged the vehicle simply as "Turbo" (although early U.S. units were badged as "Turbo Carrera") and debuted it at the Paris auto show in October 1974 before putting it on sale in the spring of 1975; export to the United States began in 1976.

The 930 proved very fast but also very demanding. The 911 was prone to oversteer because of its rear engine layout and short wheelbase; combining those traits with the power of the turbocharged motor, which exhibited significant turbo-lag, made the problem more prevalent. Even though the rear engine layout provided superior traction, sudden bursts of power to the rear wheels in mid-corner could break the tires loose, causing the car to literally spin out of control. This effect was amplified if an unexperienced driver would instinctively lift the throttle in reaction. The vehicle needed to be kept at high revvs during spirited driving to minimise the turbo lag. Skilled drivers quickly learned how to drive the 930 properly, and with that knowledge came the ability to drive the car above and beyond the levels of most other sports cars. Nevertheless, some fatal accidents resulted in product liability law suits brought against Porsche in the U.S.

Porsche made its first and most significant upgrades to the 930 for 1978, enlarging the engine to 3.3 liters and adding an air-to-air intercooler. By cooling the pressurized air charge, the intercooler helped increase power output to 300 hp (DIN); the rear 'whale tail' spoiler was re-profiled and raised slightly to make room for the intercooler.

Changing emissions regulations in Japan and the U.S. forced Porsche to withdraw the 930 from those markets in 1980. Believing the 928 would eventually replace the 911, Fuhrmann cut-back spending on the model, and it was not until Fuhrmann's resignation the company finally committed the financing to re-regulate the car.

The 930 remained available in Europe, and for 1983 a 330 hp (DIN) performance option became available on a build-to-order basis from Porsche. With the add-on came a 4-pipe exhaust system and an additional oil-cooler requiring a remodelled front spoiler and units bearing the add-on often featured additional ventilation holes in the rear fenders and modified rockers.

Porsche offered a "Flachbau" ("slantnose") 930 under the "Sonderwunschprogramm" (special order) program beginning in 1981, an otherwise normal 930 with a 935-style slantnose instead of the normal 911 front end. Each Flachbau unit was handcrafted by remodeling the front fenders. So few were built that the slantnose units often commanded a high premium over sticker, adding to the fact that they required a premium of up to 60 per cent (highly indivdualized cars even more) over the standard price. Several sources claim the factory built 948 units. The Flachbau units delivered in Europe usually featured the 330 hp performance kit.

928 sales had risen slightly by the 1985 model year, but there was still some question as to if it were truly capable of superceeding the 911 as the company's premier model, and for 1986 Porsche re-introduced the 930 to the Japanese and U.S. markets, now featuring an emission-controlled engine producing 282 hp (DIN). At the same time Porsche introduced the Targa and Cabriolet variants, both of which proved popular.

Porsche discontinued the 930 after model year 1989 when its underlying "G-Series" platform was being replaced by the 964. '89 models were the first and only versions of the 930 to feature a 5-speed transmission. A turbo version of the 964 officially succeeded the 930 in 1991 with a modified version of the same 3.3 litre engine and a 5-speed transmission.

READ MORE - The Porsche 930