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Porsche made its first and most significant changes to the 930 for 1978 model year, enlarging the engine bore by 2 mm (0.08 in) to a total displacement of 3,299 cc (3.3 L; 201.3 cu in) and adding an air-to-air intercooler. The suspension benefitted from new anti-roll bars, firmer shocks and larger diameter rear torsion bars. While the increase in displacement increased power output and torque, it also increased the weight of the vehicle, which contributed to a substantial change in the handling and character of the car compared to the Earlier 3.0-Litre Models.
The base model Porsche 911, along with the 2.7 Liter 911S and Carrera 2.7, was introduced for the 1974 model year with many significant changes to meet legislative requirements around the world for both impact safety and emissions. It was available in Coupe and Targa variants, sporting engine Type 911/92 with K-Jetronic fuel injection, rated at 150 hp. For the 1975, the base model was discontinued in North America. ROW got Coupe and Targa variants, featuring engine Type 911/41 rated at 150 hp.
Only 50 units made. The 911 Turbo Limited Edition comes equipped with the 330 bhp power unit normally only available in the 911 Turbo with Sport Equipment. In addition, the fitment of a limited slip differential as standard ensures the the increased engine performance can be used to it’s fullest extent. This Limited Edition also adopts the rear wheel air intakes of the Sport Equipment version. Essentially an SE without a slantnose front.
The 911 SC effectively replaced the 911 S and was one of Porsche's first models that was meant for the international market. It was sold as a cheaper alternative to the 911 Turbo. The SC used an unblown version the 930 Turbo unit that offered 180 to 200 bhp depending on model year. Options included the rear whale tail, front chin spoiler, Bilstein dampers, 16 inch wheels with Pirelli P7 tires and sports seats. Sometimes dealers lumped these options together to create their own sport package. It was available as a Coupe and Targa from 1978 - 1983, while the Cabriolet version was only available in 1983.
Essentially a Carrera 3.2 with a chopped, more steeply raked windscreen and hood, plus a stripped-out interior. Most had wide Turbo bodies. Porsche insisted that the simple hood was not designed to be 100 per cent watertight. The first Porsche 911 Speedster was built in 1989 and it was the last vehicle with the old 911 body. Three decades passed before the Speedster made a comeback. Had a 3.2 L Aircooled Flat 6 and 2274 were produced for the 1989 model year.
Built so that the factory Rothmans Porsche Rally Team could hit the international stage, the SC RS used the Turbo’s body with fibreglass bumpers and aluminium doors. In Autumn 1983, Porsche presents the 911 SC/RS for motor racing. The engine originates from the 911 SC, with improved performance achieved by the mechanical ball fuel injection, increased compression, the cylinder heads from the 935 and forged pistons. Racing seats are fitted in place of the standard seats.
Röhrl and Geistdörfer very nearly won that San Remo Rally, after a comeback that would have been one for the ages. Röhrl and Geistdörfer were up against a field of faster, more powerful four-wheel-drive cars in their rear-wheel-drive Porsche 911 SC, and somehow managed to pull within an eyelash of victory. Unfortunately, a broken driveshaft forced the pair to retire, leaving Michele Mouton's Audi Quattro to run away with the race.
In 1974 Porsche offered a high performance fuel injected Carrera specifically for the European market. These were close to 2.7 RS specification and are often referred to as the 2.7 or Euro Carrera. In many regards, this car is similar to the 1973 2.7 RS in touring trim, with its 210bhp 911/83 engine, but the 2.7 Carrera is based on the updated G-series body and interior. Later Carreras that reach American shores used had reduced power and throttle response compared to Euro counterparts.
Porsche introduced a new wide-body package option. Known as the M491 option it was commonly known as the "Turbo-Look". It gave the naturally aspirated cars the look and style of the 930 Turbo with wide wheel arches and the distinctive "tea tray" tail. It wasn't just about looks however, because M491 also got you the stiffer suspension shared with the Turbo and the superior Turbo braking system as well as the wider Turbo wheels. It was available on the Coupe, Cab and Targa.
Slantnosed and based on that of the 935 racecars, with pop-up headlamps. The front spoiler was made deeper in order to accommodate the extra oil cooler, while intakes in the rear wings fed air to the brakes. The larger turbocharger and four-outlet exhaust gave 30bhp of extra power. Porsche began their “special order program” offering a Flachbau option (Slantnose) for the 930 in very limited production. All of this at a cost of nearly 2 times the standard 930S.
1975 PORSCHE 911S SILVER ANNIVERSARY EDITION
Commemorating 25 years of Porsche sports car production, the 911S Silver Anniversary Edition is distinguished by unique Diamond Silver Metallic paint and a special black leatherette and tweed interior. The first of Porsche’s commemorative ‘celebration’ cars, this Silver Anniversary was produced in a limited run of 1,063 examples, of which approximately 500 are reported to have made their way to the United States.
1978 Porsche 911 SC Martini Edition
The 'Martini' edition of 1978, was identifiable by a set of side stripes similar to those that appeared on the 1976 British Motor Show 911 Turbo which was clad with the stripes to celebrate victories in the World Manufacturers Championship and the World Sports Car Championship, as well as the fourth consecutive racing season with sponsors Martini & Rossi. The stripes were so popular that Porsche quickly made them an option available to any owner as a factory or retro fit.
In 1988, Porsche produced 875 examples of the CE or Commemorative Edition 911 Carrera in coupe, targa and cabriolet variants to mark the production of the 250,000th 911. Distinguishing features include special diamond blue metallic paint with color-matched Fuchs wheels, front and rear spoilers, and interior carpets and leather. These cars also featured Dr. Ferdinand Porsche's signature embroidered on the seats in the headrest area.
For 1974 both the 911 Carrera RSR 3.0 and RSR Turbo 2.1 were created - the 3.0L for the customer teams and the 2.1 turbo for Porsche’s own team. The 911 Carrera RSR Turbo 2.1 developed 338-368 kW in power, but as the engine was small, the turbo lag was big and it wasn’t as easy to drive out of the corners as it was with the 3-litre normally aspirated car. Weight reduction measures included plastic hoods, fender flares and doors and an aluminium safety cage.