103-616: The MGB is a two-door sports car manufactured and marketed from 1962 until 1980 by the British Motor Corporation (BMC), later the Austin-Morris division of British Leyland , as a four-cylinder, soft-top sports car . It was announced and its details first published on 19 September 1962. Variants include the MGB GT three-door 2+2 coupé (1965–1980), the six-cylinder sports car and coupé MGC (1967–1969), and
206-445: A "needle") that fits inside an orifice (" jet ") that admits fuel into the airstream passing through the carburettor. Since the needle is tapered, as it rises and falls, it opens and closes the opening in the jet, regulating the passage of fuel, so the movement of the piston controls the amount of fuel delivered, depending on engine demand. The flow of air through the venturi creates reduced static pressure within it. This pressure drop
309-411: A constant setting – the pressure drop in the venturi increases, the pressure above the piston falls, and the piston is sucked upward, increasing the size of the venturi, until the pressure drop in the venturi returns to its nominal level. Similarly, if the airflow into the engine is reduced, the piston will fall. The result is that the pressure drop in the venturi remains the same regardless of the speed of
412-399: A controversial choice for a "purist" sports car. The Elan sold poorly and was discontinued after three years. The 1996 Lotus Elise , a mid-engined, rear-wheel drive roadster, was much more successful and remained in production until 2021. Roadsters enjoyed a resurgence in the mid-1990s, including the 1989-present Mazda MX-5 , the 1995-2002 BMW Z3 (succeeded by the 2002-2016 BMW Z4 ),
515-486: A definite function of the rate of air delivery. The precise nature of the function is determined by the tapered profile of the needle. With appropriate selection of the needle, the fuel delivery can be matched much more closely to the demands of the engine than is possible with the more common fixed-venturi carburettor, an inherently inaccurate device whose design must incorporate many complex fudges to obtain usable accuracy of fuelling. The well-controlled conditions under which
618-409: A definition. Insurance companies have also attempted to use mathematical formulae to categorise sports cars, often charging more for insurance due to the inherent risk of performance driving. There is no fixed distinction between sports cars and other categories of performance cars, such as muscle cars and grand tourers , with some cars being members of several categories. Traditionally,
721-638: A federal version. Abingdon built seven LHD examples, sent them to America to achieve certification, and brought them back to the UK to be sold to mainland European countries. Subsequent to the launch of the Mazda MX-5 in 1989, British Motor Heritage (by then owned by Rover Group ) had placed the MGB bodyshell back in production to serve the MGB restoration market. The success of the MX-5 had given Rover confidence that
824-433: A five-bearing crankshaft. From 1975, US-market MGB engines were de-tuned to meet emission standards, ride height was increased by an inch (25 mm), and distinctive rubber bumpers were fitted to meet bumper standards . The MGB was one of the first cars to feature controlled crumple zones designed to protect the driver and passenger in a 30 mph (48 km/h) impact with an immovable barrier (200 ton). Nevertheless,
927-399: A pressed-steel chassis, a gated 4-speed transmission, pushrod-actuated overhead inlet valves , a honeycomb radiator, low-tension magneto ignition , a long wheelbase, a low center of mass and a very effective suspension system. The overall result was a "safe and well-balanced machine" with a higher performance than any other contemporary production car. At the 1903 Gordon Bennett Cup ,
1030-427: A production Simplex 60 hp was entered only due to a specially-built 90 hp racing car being destroyed in a fire; the 60 hp famously went on to win the race. The 1910 Austro-Daimler 27/80 is another early sports car which had success in motor racing. The 27/80 was designed by Ferdinand Porsche , who drove the car to victory in the 1910 Prince Henry Tour motor race. The Vauxhall and Austro-Daimler —like
1133-471: A right-angled rear bench seat and far more luggage space than in the roadster. Relatively few components differed, although the MGB GT did receive different suspension springs and anti-roll bars and a different windscreen which was more easily and inexpensively serviceable. In 2019, Road & Track named the GT one of the "16 of Pininfarina's Most Beautiful Designs That Aren't Ferraris." Although acceleration of
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#17327766731191236-614: A scuttle panel behind the seats making access difficult; the location gave excellent weight distribution and thus improved handling. The charging system used a Lucas dynamo. Later MGBs had considerable changes to the electrical system including the use of a single 12-volt battery, a change from positive to negative earth, safety-type toggle (rocker) switches, alternator in lieu of dynamo, additional warning lights and buzzers, and most common functions moved to steering column stalks. From 1972 there were two different Pirelli Cinturato radial tyre sizes factory-fitted to new cars, depending on whether
1339-427: A single Stromberg 1.75-inch (44 mm) carburettor mounted on a combination intake–exhaust manifold. This greatly reduced power as well as created longevity problems as the (adjacent) catalytic converter tended to crack the intake–exhaust manifold. All MGBs used an SU-built electric fuel pump . All MGBs from 1962 to 1967 used a four-speed manual gearbox with a non-synchromesh, spur cut first gear. Optional overdrive
1442-421: A three-main-bearing crankshaft, 18G-series. In February 1964 positive crank-case breathing was introduced and the engine prefix changed to 18GA, until October 1964, when a five-bearing crankshaft design was introduced, the engine prefix became 18GB. Horsepower was rated at 95 net bhp on both five-main-bearing and earlier three-bearing cars with peak power coming at 5,400 rpm with a 6,000 rpm redline. Torque output on
1545-452: Is an iconic sports car of the early 1960s, due to its attractive styling and claimed top speed of 241 km/h (150 mph). The E-type was produced for 14 years and was initially powered by a six-cylinder engine, followed by a V12 engine for the final generation. In 1962, the MG B introduced a new era of affordable lightweight four-cylinder roadsters. The MG B used a unibody construction and
1648-400: Is communicated to the upper side of the piston via an air passage. The underside of the piston is in communication with atmospheric pressure. The difference in pressure between the two sides of the piston creates a force tending to lift the piston. Counteracting this force is the weight of the piston and the force of a compression spring that is compressed by the piston rising; because the spring
1751-406: Is notable for using a three-seat layout, where the front row consists of a centrally-located driver's seat. The location of the engine and driven wheels significantly influence the handling characteristics of a car and are therefore crucial in the design of a sports car. Traditionally, most sports cars have used rear-wheel drive with the engine either located at the front ( FR layout ) or in
1854-406: Is operating over a very small part of its possible range of extension, the spring force approximates to a constant force. Under steady state conditions, the upward and downward forces on the piston are equal and opposite, and the piston does not move. If the airflow into the engine is increased – by opening the throttle plate, or by allowing the engine revolutions to rise with the throttle plate at
1957-520: The Audi RS 2 Avant . Ford Europe withdrew from the sports car market at the end of 1986 when the Capri was discontinued after a production run of nearly two decades. There was no direct successor, as Ford was concentrating on higher-performance versions of its hatchback and saloon models at the time. In 1989, a new generation of Lotus Elan roadster was released which used a front-wheel drive layout,
2060-541: The BMW 303 , Citroën Traction Avant and Fiat 508 — offered similar handling and comfort to the more expensive sports cars. Powerful, reliable, and economical (although softly suspended) American saloons began to be imported to Europe in significant numbers. Sports car ownership was increased through models such as the Austin 7 and Wolseley Hornet six , however many of these sports cars did not offer any performance upgrades over
2163-623: The Bentley Speed Six (1928-1930), with the former famously described by Bugatti's founder as "the fastest lorry in the world". Between the Great Depression and the World War II the pre-war era was a period of decline in importance for sports car manufacturers, although the period was not devoid of advances, for example streamlining . Cheap, light-weight family sedans with independent front suspension— such as
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#17327766731192266-520: The Jensen FF became the first sports car to use all-wheel drive . The Ford Capri is a 2+2 coupe that was produced from 1968 to 1986 and intended to be a smaller European equivalent of the Ford Mustang. A main rival to the Capri was Opel Manta , which was produced from 1970 to 1988. The 1973-1978 Lancia Stratos was a mid-engined two-seat coupe that was powered by a Ferrari V6 engine. This
2369-542: The MG F . Development of the MGB started at least as early as 1958 with the prototype known by its Abingdon codename; MG EX205. In structure the car was a progressive, modern design in 1962, using a unitary structure, instead of the traditional body-on-frame construction used on both the MGA and MG T-types and the MGB's rival, the Triumph TR series. However, components such as brakes and suspension were developments of
2472-583: The "thrill of driving" or are marketed "using the excitement of speed and the glamour of the (race)track" However, other people have more specific definitions, such as "must be a two-seater or a 2+2 seater" or a car with two seats only. In the United Kingdom, early recorded usage of the "sports car" was in The Times newspaper in 1919. The first known use of the term in the United States
2575-454: The 1,798 cc MGB engine) and new suspension changed the vehicle's handling, and it received a mixed response in the automotive press. It later transpired that the BMC press department had set the tyre pressures of the cars in the launch fleet incorrectly (to the same values as the standard MGB) and that even the correct pressures were insufficient to get the best handling from the car. The MGC
2678-403: The 1905 Isotta Fraschini Tipo D, the 1906 Rolls-Royce Silver Ghost , the 1908 Delage , the 1910 Bugatti Type 13 , and the 1912 DFP 12/15 . Early motor racing events included the 1903 Paris–Madrid race , the 1905-1907 Herkomer Trophy, the 1908-1911 Prince Henry Tour and the 1911–present Monte Carlo Rally . The Prince Henry Tours (which were similar to modern car rallies) were among
2781-495: The 1921 Coppa Florio . Another approach— such as that used by Morris Garages— was to convert touring cars into sports cars. The first 24 Hours of Le Mans race for sports cars was held in 1923, although the two-seat sports cars only competed in the smallest class, with the majority of cars entered being four-seat fast touring cars. "This race, together with the Tourist Trophy Series of Races , organised after
2884-404: The 1948 Ferrari 166 S . A new concept altogether was the modern Gran Turismo class from Italy, which was in effect unknown before the war: sustained high-speed motoring from relatively modest engine size and compact closed or berlinetta coachwork. The 1947 Maserati A6 1500 two-seat berlinetta was the first production model from Maserati. In Germany, the motor industry was devastated by
2987-517: The 1968 model year a Mark II model. Changes included new gearboxes with revised ratios and synchromesh on all four gears, an optional Borg-Warner 35 automatic gearbox (except in the US, peculiarly), a new rear axle, and an alternator in place of the dynamo with a change to a negative earth system. The Mk II's new gearboxes required significantly altered floorpan sheet metal with a new, flat-topped transmission tunnel. To meet US safety regulations for
3090-425: The 1968 model year, the MGB received a plastic and foam rubber covered "safety" dashboard, dubbed the "Abingdon pillow", and dual circuit brakes. Other markets continued with the steel dashboard. Rubery Owen RoStyle wheels were introduced to replace the previous pressed steel versions in 1969 and reclining seats were standardised. 1969 also saw three windscreen wipers instead of two to sweep the required percentage of
3193-499: The 1980 Deutsche Rennsport Meisterschaft and Giro d'Italia automobilistico marathon. The Montecarlo was a basis for the silhouette racing car , Lancia Rally 037 . In the 1970s, turbocharging began to be adopted by sports cars, such as the BMW 2002 Turbo in 1973, the first Porsche 911 Turbo in 1975, and the Saab 99 Turbo in 1978. Turbocharging became increasingly popular in the 1980s, from relatively affordable coupes such as
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3296-452: The 1980–1986 Renault Fuego and 1992–1996 Rover 220 Coupé Turbo , to expensive supercars such as the 1984-1987 Ferrari 288 GTO and 1987-1992 Ferrari F40 . In the late 1980s and early 1990s, several manufacturers developed supercars that competed for production car top speed records . These cars included the 1986–1993 Porsche 959 , 1991–1995 Bugatti EB 110 , 1992–1994 Jaguar XJ220 and 1993–998 McLaren F1 . The 1980-1995 Audi Quattro
3399-506: The 1990s, all-wheel drive has become more common in sports cars. All-wheel drive offers better acceleration and favorable handling characteristics (especially in slippery conditions), but is often heavier and more mechanically complex than traditional layouts. Examples of all-wheel drive sports cars are the Lamborghini Huracan , Bugatti Veyron , and Nissan GT-R . Rear engine layouts are not typical for sports cars, with
3502-564: The 1995-2002 MG F , the 1996–present Porsche Boxster and the 1998–present Audi TT . Zenith Carburettor Company (British) The Zenith Carburetter Company Limited was a British company making carburettors in Stanmore Middlesex , founded in 1912 as a subsidiary of the French Société du carburateur Zénith . In 1965, the company joined with its major pre-war rival Solex Carburettors, and over time,
3605-465: The 50th anniversary of the company in 1975, had the alloy wheels from the V8, allegedly because the V8 was not selling and they had a large stock. With a pre-war British racing green colour, tinted glass, gold body stipes and other gold trim, 751 Jubilees were made. One was destroyed in an advertising stunt that went wrong. There are thought to be about half of them left as of 2021. The final 1,000 LE models were
3708-409: The B's nose, and a matching rear bumper completed the change. New US headlight height regulations also meant that the headlamps were too low. Rather than redesign the front of the car, British Leyland raised the car's suspension by 1-inch (25 mm). This, in combination with the new, far heavier bumpers, resulted in significantly poorer handling. For the 1975 model year only, the front anti-roll bar
3811-512: The British AA motoring association has described the car, like many other classic models, as much less safe than modern cars. The issue received public attention following a 2013 case in which a driver in a hired 1963 MGB was killed in a collision with a taxi. A limited production of 2,000 units of the RV8 was produced by Rover in the 1990s. Despite the similarity in appearance to the roadster,
3914-538: The GT was slightly slower than that of the roadster, owing to its increased weight, top speed improved by 5 mph (8.0 km/h) to 105 mph (169 km/h) because of better aerodynamics. A special edition of the GT was produced in 1975 for the 50th Anniversary of the MG Car Company. It was in pre-war British Racing Green, had tinted glass, gold body stripes, V8 alloy wheels painted in gold and black, and other gold trim. 751 Jubilees were made, one of which
4017-542: The MGB GT V8 in 1973 powered by the aluminium block/aluminium head 3,532 cc Rover V8 engine , first fitted to the Rover P5B . The V8's 137 hp (102 kW) and 193 lb⋅ft (262 N⋅m) of torque allowed it to reach 60 mph (97 km/h) in 7.7 seconds and go on to a 125 mph (201 km/h) top speed. Fuel consumption was just under 20 mpg. By virtue of its aluminium cylinder block and heads,
4120-431: The MGB GT was the same as the roadster with the exception of slightly larger rear brake cylinders. A single-circuit hydraulic system was used before 1968 when dual-circuit (separate front and rear systems) were installed on all MGBs to comply with US regulations. Servo assistance (power brakes) was not standard until 1975. Many modern and contemporary testers have commented on the very heavy brake pedal pressure needed to stop
4223-475: The MGB had a peak of 110 lb⋅ft (150 N⋅m) and fuel consumption was around 25 mpg. US specification cars saw power fall in 1968 with the introduction of emission standards and the use of air or smog pumps. In 1971 UK spec cars still had 95 bhp (71 kW) at 5,500 rpm, with 105 lb⋅ft (142 N⋅m) torque at 2,500 rpm. Engine prefixes became 18V and the SU carburettor needles were changed for reasons of
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4326-687: The MGB was cannibalising the TR7's sales and this therefore was a justification for taking it off the market. However, the TR7 failed to sell and was axed a year later. The MG marque was subsequently used to badge engineer sports versions of the Austin Metro , Austin Maestro and Austin Montego throughout the 1980s, prior to the re-emergence of the MGB in late 1992 as the MG RV8. The fixed-roof MGB GT
4429-453: The MGB, 15 inch wheels with Pirelli Cinturato 165HR15 tyres (CA67). a lower geared rack and pinion and special torsion bar suspension with telescopic dampers. Like the MGB, it was available as a coupé (GT) and roadster. An overdrive gearbox or three-speed automatic gearbox were available as options. The car was capable of 120 mph (193 km/h) and a 0–60 mph time of 10.0 seconds. The heavy engine (209 lb heavier than
4532-468: The Mercedes Simplex 60 hp— were production fast touring cars. The 1912 Hispano-Suiza Alfonso XIII is also considered one of the earliest sports cars, as it was a "purpose built, high performance, two-seater production automobile". The model was named after King Alfonso XIII of Spain , a patron of the car's chief designer and an enthusiast for the marque. Other early sports cars include
4635-605: The North American market. In Australia, the CD-150 and CDS-175 models were fitted to the high-performance, triple-carburettored Holden Torana GTR-XU1. Designed and developed by Dennis Barbet ( Standard Triumph ) and Harry Cartwright (Zenith) to break SU 's patents, the Stromberg carburettor features a variable venturi controlled by a piston . This piston has a long, tapered, conical metering rod (usually referred to as
4738-545: The RV8 had less than 5% parts interchangeability with the original car. The MGB remains a popular choice for collectors due to inexpensive and readily available parts and simple mechanics. All MGBs (except the V8 and 6 cylinder versions) used the BMC B-Series engine . This engine was essentially an enlarged version of that used in the MGA with engine displacement being increased from 1,622 to 1,798 cc. The earlier cars used
4841-579: The Rover V8 engine weighed approximately 20 kilos less than MG's iron four-cylinder . Unlike the MGC, the V8 that provided the MGB GT V8's increased power and torque did not require significant chassis changes nor sacrifice handling. Both chrome and rubber-bumpered GT versions of the V8-powered MGB were produced by the factory with production ending in 1976. MG never attempted to export the MGB GT V8 to
4944-584: The TR7. When the Abingdon factory finally closed in late 1980, British Leyland did not replace it, with the EX234 prototype finally being sold at auction in 2016. The decision to discontinue the MGB came about largely due to the poor sales performance of the Triumph TR7 , which had largely taken over as BL's contemporary offering in the small sports car market. BL management felt that continued production of
5047-430: The US market, meant for a total of 500 examples. Due to a high demand for the limited edition model, production ended with 6,682 examples. The UK received bronze-painted roadsters and a silver GT model limited edition. The production run of homemarket limited edition MGBs was split between 421 roadsters and 579 GTs. The last MGB roadster produced at Abingdon returned to Abingdon County Hall Museum on 1 December 2011, with
5150-533: The United States. It chose not to even develop a left-hand-drive version of the MGB GT V8, although the Rover V8 engine had been offered in certain US-bound Rover models. The P6 3500, however, was withdrawn from the US after 1971 and the Rover 3500 SD1 only introduced in 1980 (its engine equipped with power-sapping emissions equipment) so that during the lifetime of the MGB GT V8 the engine was not being built in
5253-1115: The Zenith brand name fell into disuse. The rights to the Zenith designs were owned by Solex UK (a daughter company of Solex in France). While better known for its much later products, Zenith produced carburettors that were standard equipment on some very early, brass era automobiles , including the Scripps-Booth . Zenith's best-known products were the Zenith- Stromberg carburettor s used from 1965–1967 Humber Super Snipe Series Va/Vb , Humber Imperial , 1967–1975 Jaguar E-types , Saab 99s , 90s and early 900s , 1969–1972 Volvo 140s and 164s , 1966–1979 Hillman Minx , Hunter (Arrow) , 1966–1970 Singer Gazelle / Vogue (Arrow) , 1967–1975 Sunbeam Alpine / Rapier Fastback (Arrow) , 1970–1981 Hillman/Chrysler/Talbot/Sunbeam Avenger/Plymouth Cricket , MGs and some 1960s and 1970s Triumphs . The Triumph Spitfire used Zenith IV carburettors in
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#17327766731195356-449: The advent of the five-main-bearing engine in 1965. Therefore, the transmission for a three-main-bearing engine (1962–1964) differed from its later counterpart. 1968 to 1974.5 1974.5 to 1980 Overdrive operated in fourth gear only in units made from February 1977 onward. Early MGBs used the "banjo" type differential carried over from the MGA with the rear axle ratio reduced from the MGA's 4.1 (or 4.3) to 3.9 to 1. (Compensating for
5459-403: The airflow – hence the name "constant depression" for carburettors operating on this principle – but the piston rises and falls according to the speed of the airflow. Since the position of the piston controls the position of the needle in the jet, and thus the open area of the jet, while the depression in the venturi sucking fuel out of the jet remains constant, the rate of fuel delivery is always
5562-479: The car appeared during the next year or two, all conforming to the same basic design and earning for themselves a reputation second to none for fast and reliable travel. The 60-h.p. cars were announced late in 1902. The cars were possessed of a very real performance superior to anything else which could be bought at the time... and the model achieved an almost invincible position among the fast cars of its day. The Sports Car: Development and Design The basis for
5665-414: The car was a roadster,(155/80x14) or a GT (165/80x14). With the 1974.5 arrival of the rubber bumper cars the factory-fitted tyre size was simplified to 165/80x14 for all cars, irrespective of whether the car was a roadster or a GT, and also irrespective of the wheel type (wire or RoStyle). The factory built V8s were fitted with alloy wheels and full profile 175HR14 tyres. The "Jubilee" model, made to celebrate
5768-411: The development of performance cars such as the 1910 Vauxhall Prince Henry , 1910 Sunbeam 12/16 , 1910 Talbot 25 hp , 1910 Straker-Squire 15 hp and 1913 Star 15.9 hp . Following the halt in sports car production caused by World War I , Europe returned to manufacturing automobiles from around 1920. It was around this time that the term 'Sports Car' began to appear in the motor catalogues, although
5871-641: The earlier 1955 MGA, with the B-Series engine having its origins in 1947. The lightweight design reduced manufacturing costs while adding to overall vehicle strength. Wind-up windows were standard, and a comfortable driver's compartment offered plenty of legroom. A parcel shelf was fitted behind the seats. The MGB achieved a 0–60 mph (97 km/h) time of just over 11 seconds. The three-bearing 1,798 cc B-Series engine produced 95 hp (71 kW) at 5,400 rpm – upgraded in October 1964 to
5974-400: The early 1920s, the cost to produce a racing car was not significantly higher than a road car, therefore several manufacturers used the design from the current year's racing car for the next year's sports car. For example, the 1921 Ballot 2LS based on the racing car that finished third at the 1921 French Grand Prix. The Benz 28/95PS was also a successful racing car, with victories including
6077-438: The eight-cylinder 2+2 coupé, the MGB GT V8 (1973–1976). Replacing the MGA in 1962, production of the MGB and its variants continued until 1980, though fixed roof GT models ceased export to the US in 1974. Sales for the MGB, MGC and MGB GT V8 combined totaled 523,836 cars. After a 12-year hiatus, the MGB re-entered production as the heavily modified MG RV8 with a limited run of 2,000 cars before finally being replaced in 1995 by
6180-463: The exact origin of the name is not known. The decade that followed became known as the vintage era and featured rapid technical advances over the preceding Brass Era cars . Engine performance benefited from the abandonment of " tax horsepower " (where vehicles were taxed based on bore and number of cylinders, rather than actual power output) and the introduction of leaded fuel , which increased power by allowing for higher compression ratios . In
6283-472: The first supercars . Other significant European models of the 1960s and 1970s which might be considered supercars today are the Ferrari 250 GTO (1962-1964), Ferrari 250 GT Lusso (1963-1964), Ferrari 275 GTB/4 (1966-1968), Maserati Ghibli (1967-1973), Ferrari Daytona (1968-1973), Dino 246 (1969-1974), De Tomaso Pantera (1971-1993), Ferrari 308 GTB (1975-1980) and BMW M1 (1978-1981). In 1966,
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#17327766731196386-528: The first World War by the R.A.C. , appealed to the public imagination and offered to the manufacturers of the more sporting cars an excellent opportunity for boosting sales of their products." The classic Italian road races— the Targa Florio , and the Mille Miglia (first held in 1927)— also captured the public's imagination. By 1925, the higher profits available for four-seater cars resulted in
6489-445: The glass (US market only), high seat backs with head restraints and side marker lamps. The next year saw a new front grille, recessed, in black aluminium. The more traditional-looking polished grille returned in 1973 with a black "honeycomb" insert. In North America, 1970 saw split rear bumpers with the number-plate in between, 1971-1974 returned to the earlier single-piece full-length style chrome bumper. Further changes in 1972 were to
6592-475: The help of British Motor Heritage . It was lifted up 30 feet through a first floor window of the Grade I listed building with inches to spare and now forms part of the collection on display in the main gallery. Work on a successor for the MGB had been undertaken as early as 1964 with the EX234, but due to the excellent sales of the MGB and MG Midget , BMC cancelled it in 1966. In 1968 a second proposed replacement
6695-459: The interior with a new fascia . To meet impact regulations, 1974 US models had the chrome bumper over-riders replaced with oversized rubber ones, nicknamed " Sabrinas " after the British actress Sabrina . In the second half of 1974 the chrome bumpers were replaced altogether. A new, steel-reinforced black rubber bumper at the front incorporated the grille area as well, giving a major restyling to
6798-415: The jet is operating also make it possible to obtain good and consistent atomisation of the fuel under all operating conditions. This self-adjusting nature makes the selection of the maximum venturi diameter (colloquially, but inaccurately, referred to as "choke size") much less critical than with a fixed-venturi carburettor. To prevent erratic and sudden movements of the piston, it is damped by light oil in
6901-433: The last cars to leave the factory with alloy wheels. The roadster was the first of the MGB range to be produced. The body was a pure two-seater; a small rear seat was a rare option at one point. The MGB offered better space utilisation to passengers and luggage than the preceding MG A, despite being both 3 in (7.6 cm) shorter in wheelbase and overall length, and 2 in (5.1 cm) lower. Growing in width by
7004-573: The late 1920s were AC Cars , Alfa Romeo , Alvis , Amilcar , Bignan and Samson, Chenard-Walcker , Delage , Hispano-Suiza , Hotchkiss , Mercedes-Benz and Nazzaro . Two cars from the Vintage Era that would influence sports cars for many years were the Austin Seven and MG M-type "Midget". Successful sports cars from Bentley during this era were the Bentley 3 Litre (1921-1929) and
7107-487: The latest emission regulations, under ECE15. By 1973 it was 94 bhp (70 kW); by 1974 it was 87, with 103 lb⋅ft (140 N⋅m) torque; by 1975 it was 85 with 100 lb⋅ft (140 N⋅m). Some California specification cars produced only around 70 hp (52 kW) by the late 1970s. The compression ratio was also reduced from 9:1 to 8:1 on US spec cars in 1972. All MGBs from 1963 to 1974 used twin 1.5-inch (38 mm) SU carburettors. US spec cars from 1975 used
7210-434: The market for 2 seater roadsters had re-emerged, and the decision was taken in 1991 to create an updated MGB model. The suspension was only slightly updated, sharing the leaf spring rear of the MGB. The boot lid and doors were shared with the original car, as were the rear drum brakes. The engine was the 3.9-litre version of the aluminium Rover V8, similar to the one previously used in the MGB GT V8. A limited-slip differential
7313-518: The mass-produced cars upon which they were based. The highest selling sports car company of the 1930s was Morris Garages , who produced 'MG Midget' models of the M-Type , J-Type , P-Type and T-Type . The K3 version of the K-Type Magnette was a successful racing car, achieving success in the Mille Miglia , Tourist Trophy and 24 Hours of Le Mans . The Bugatti Type 57 (1934-1940)
7416-537: The middle of the vehicle ( MR layout ). Examples of FR layout sports cars include the Caterham 7 , Mazda MX-5 , and the Dodge Viper . Examples of MR layout sports cars are the Ferrari 488 , Ford GT , and Toyota MR2 . To avoid a front-heavy weight distribution , many FR layout sports cars are designed so that the engine is located further back in the engine bay, as close to the firewall as possible. Since
7519-544: The most common layout for sports cars was a roadster (a two-seat car without a fixed roof). However, there are also several examples of early sports cars with four seats. Sports cars are not usually intended to transport more than two adult occupants regularly, so most modern sports cars are generally two-seat or 2+2 layout (two smaller rear seats for children or occasional adult use). Larger cars with more spacious rear-seat accommodation are usually considered sports sedans rather than sports cars. The 1993-1998 McLaren F1
7622-454: The non-servo-assisted cars. The MGB initially had an extremely simple electrical system. Dash-mounted toggle switches controlled the lights, ventilation fan, and wipers with only the direction indicators being mounted on a stalk on the steering column. The ignition switch was also mounted on the dash. Like the MGA, the MGB used two 6-volt batteries wired in series to give a 12-volt positive earth configuration. The batteries were placed under
7725-809: The notable exception of the Porsche 911 . The front-wheel drive layout with the engine at the front ( FF layout ) is generally the most common for cars, but it is not as common among traditional sports cars. Nonetheless, the FF layout is used by sport compacts and hot hatches such as the Mazdaspeed3 . Sports cars with an FF layout include the Fiat Barchetta , Saab Sonett , or Opel Tigra . The ancestor of all high-performance cars had its origin in Germany. The 28-h.p. Cannstatt-Daimler racing car of 1899
7828-456: The philosophy of achieving performance through minimizing weight and has been rated as one of the top 10 sports cars of the 1960s. The Elan featured fibreglass bodies, a backbone chassis, and overhead camshaft engines. A different style of roadster was the AC Cobra , released in 1962, which was fitted with V8 engines up to 7.0 L (427 cu in) in size by Shelby . The Porsche 911
7931-423: The production of two-seat sports cars being limited to smaller manufacturers such as Aston-Martin (350 Astons built from 1921 to 1939) and Frazer-Nash (323 cars built from 1924 to 1939). Then by the late 1920s, the cost of producing racing cars (especially Grand Prix cars) escalated, causing more manufacturers to produce cars for the growing sports car market instead. Significant manufacturers of sports cars in
8034-445: The rear drum brakes and rear leaf springs, the RV8 was not popular with road testers. The high price of the car put it in direct competition with contemporary rivals from specialist manufacturers such as TVR which offered modern technology and a more up to date driving experience. Sports car A sports car is a type of car that is designed with an emphasis on dynamic performance, such as handling , acceleration, top speed,
8137-506: The reduction from 15 inch to 14-inch (360 mm) wheels). MGB GTs first began using a tube-type rear axle in 1967. This unit was substantially stronger, being, like the later gearbox, designed for the three-litre MGC. All MGBs used the tube-type axle from 1968. All MGBs were fitted with 11-inch (280 mm) solid (non-ventilated) disc brakes on the front with drum brakes on the rear. The front brake calipers were manufactured by Lockheed and used two pistons per caliper. The brake system on
8240-462: The same as fourth gear direct. The overdrive unit was engaged by a toggle switch on the dashboard or by pulling the wiper lever towards the driver, model dependent. The switch was moved to the top of the gearshift knob in 1977. Overdrives were fitted to less than 20% of all MGBs. There were three different types of overdrive transmissions fitted to the MGB. 1962–64, 1965–67 The gearbox input shaft, flywheel and engine backing plate were changed with
8343-454: The same, gave the MGB a distinctly lower and more squat stance than its forebear. The suspension was softer, giving a smoother ride, and the larger engine gave a slightly higher top speed. The four-speed gearbox was an uprated version of the one used in the MGA with an optional (electrically activated) overdrive transmission. Wheel diameter dropped from 15 to 14 in (36 cm). In late 1967, enough changes were introduced for MG to declare
8446-558: The sporting events of the period, bringing renown to successful entrants. The Prince Henry Tours started the evolution of reasonably large and technically advanced production sports cars. In England, the development of sporting cars was inhibited by the Motor Car Act 1903 , which imposed a speed limit of 20 mph (32 km/h) on all public roads. This led to the 1907 opening of the Brooklands motor circuit , which inspired
8549-408: The sports car is traced to the early 20th century touring cars and roadsters , and the term 'sports car' would not be coined until after World War One. A car considered to be "a sports-car years ahead of its time" is the 1903 Mercedes Simplex 60 hp , described at the time as a fast touring car and designed by Wilhelm Maybach and Paul Daimler . The Mercedes included pioneering features such as
8652-476: The sports car, but also the most important and diverse technical developments [and] very rapid and genuine improvement in the qualities of every modern production car; assisted by new design and manufacturing techniques a consistently higher level of handling properties has been achieved." In Italy, a small but wealthy market segment allowed for the manufacture of a limited number of high-performance models directly allied to contemporary Grand Prix machines, such as
8755-627: The thrill of driving, and racing capability. Sports cars originated in Europe in the early 1910s and are currently produced by many manufacturers around the world. Definitions of sports cars often relate to how the car design is optimised for dynamic performance, without any specific minimum requirements; both a Triumph Spitfire and Ferrari 488 Pista can be considered sports cars, despite vastly different levels of performance. Broader definitions of sports cars include cars "in which performance takes precedence over carrying capacity", or that emphasise
8858-478: The war, but a small number of manufacturers returned it to prominence. In 1948, the Porsche 356 was released as the debut model from Porsche. The significance of the Porsche 356 and its successors was described in 1957 as "future historians must see them as among the most important of mid-century production cars". The 1954 Mercedes-Benz 300 SL is another significant car from this era. The 1961 Jaguar E-Type
8961-415: Was a pioneering all-wheel drive sports car. The 1995 Porsche 911 Turbo (993) saw the 911 Turbo model switch to all-wheel drive, a drivetrain layout that the model uses to this day. The BMW M3 was released in 1986 and has been produced for every generation since. The 1993-1996 Mercedes-Benz W124 E36 AMG was the mass-produced AMG model. Audi's equivalent division, called "RS", was launched in 1994 with
9064-632: Was also fitted. The MG RV8 debuted at the British International Motor Show in October 1992. The British Motor Heritage manufactured bodyshell was painted at Rover's Cowley plant before final assembly at Cowley where the cars were hand-built in a separate unit, the LVA . The interior featured veneered burr elm woodwork and Connolly leather . The engine produced 190 bhp (142 kW) at 4,750 rpm, achieving 0–60 mph (96 km/h) in 5.9 seconds. Largely due to
9167-490: Was also to be used for the new Austin 3-litre four-door saloon. In the twin SU carburettor form used in the MGC the engine produced 145 bhp (108 kW) at 5,250 rpm. The body shell needed considerable revisions around the engine bay and to the floor pan, but externally the only differences were a distinctive bonnet bulge to accommodate the relocated radiator and a teardrop for carburettor clearance. It had different brakes from
9270-684: Was an unusual arrangement for a car used to compete in rallying, nonetheless it was very successful and won the World Rally Championship in 1974 , 1975 , and 1976 . The Lancia Montecarlo was produced from 1975 to 1981 and is a mid-engine two-seater, available as a coupé or a targa-top. It was sold as Lancia Scorpion in the USA. Its racing variant, Montecarlo Turbo, won the 1979 World Championship for Makes in its division and overall for 1980 World Championship for Makes and 1981 World Endurance Championship for Makes . Montecarlo also won
9373-627: Was another significant sports car of the pre-war era and is now among the most valuable cars in the world. The T57 was successful in sports car races, including winning the 1937 24 Hours of Le Mans and 1939 24 Hours of Le Mans . Another successful Bugatti sports car was the Bugatti Type 55 (1932-1935), which was based on the Type 51 Grand Prix racing car. The decade following the Second World War saw an "immense growth of interest in
9476-425: Was available. This gearbox was based on that used in the MGA with some minor upgrades to cope with the additional output of the larger MGB engine. In 1968 the early gearbox was replaced by a full synchromesh unit based on the MGC gearbox. This unit was designed to handle the 150net bhp of the three-litre engine of the MGC and was thus over-engineered when mated with the standard MGB B-Series engine. The same transmission
9579-479: Was cancelled in 1969 after less than two years of production. At the time of the car's launch the manufacturers stated that the Austin-Healey 3000 would continue to be offered as a parallel model priced on the domestic market at £1,126, compared to the MGC's £1,102. In 1967 Prince Charles took delivery of an MGC GT (SGY 766F), which he passed down to Prince William 30 years later. MG began offering
9682-505: Was deleted as a cost-saving measure (though still available as an option). The damage done by the British Leyland response to US legislation was partially alleviated by revisions to the suspension geometry in 1977, when a rear anti-roll bar was made standard equipment on all models. US emissions regulations also reduced horsepower. In March 1979 British Leyland started the production of black painted limited edition MGB roadsters for
9785-481: Was destroyed in an advertising stunt that went wrong. There are thought to be about half of them left as of 2021. The MGB Berlinette produced by the Belgian coach builder Jacques Coune used a raised windscreen to accommodate the fastback. Fifty-six were produced. The MGC was a 2,912 cc, straight-six version of the MGB sold from 1967 and produced until August 1969 with some sales running on into 1970. The car
9888-489: Was developed, the ADO76, but British Leyland had ceased work on that project by the end of 1970; the ADO76 would ultimately become the rubber-bumper version of the MGB in 1974. A third MGB replacement was developed in 1969, this time with a mid-mounted BMC E-series engine, semi-independent Hydrolastic suspension and Ferrari-like styling. This was cancelled in 1970 in favour of the more-conventional Triumph Bullet, which later became
9991-534: Was given the model code ADO52. It was intended as a replacement for the Austin-Healey 3000 Mk. III which would have been ADO51 but in that form never got beyond the design proposal stage. The first engine to be considered was an Australian-designed six-cylinder version of the BMC B-Series but the production versions used a new seven-main-bearing development of the Morris Engines designed C-Series that
10094-485: Was in 1928. Sports cars started to become popular during the 1920s. The term initially described two-seat roadsters (cars without a fixed roof), however, since the 1970s the term has also been used for cars with a fixed roof (which were previously considered grand tourers ). Attributing the definition of 'sports car' to any particular model can be controversial or the subject of debate among enthusiasts. Authors and experts have often contributed their ideas to capture
10197-414: Was introduced in October 1965. Production continued until 1980, although export to the US ceased in 1974. The MGB GT sported a greenhouse designed by Pininfarina and launched the sporty " hatchback " style. By combining the sloping rear window with the rear deck lid, the B GT offered the utility of a station wagon while retaining the style and shape of a coupe. This new configuration was a 2+2 design with
10300-694: Was produced until 1980. Other successful lightweight roadsters include the Triumph Spitfire (1962-1980) and the Alfa Romeo Spider (1966-1993). The Fiat X1/9 (1972-1989) was unusual for its use of a mid-engine design in an affordable roadster model. A late entrant to the affordable roadster market was the 1975 Triumph TR7 , however by the late 1970s the demand for this style of car was in decline, resulting in production ceasing in 1982. The original Lotus Elan (1962-1975) two-seat coupe and roadster models are an early commercial success for
10403-675: Was released in 1964 and has remained in production since. The 911 is notable for its use of the uncommon rear-engine design and the use of a flat-six engine . Another successful rear-engine sports car was the original Alpine A110 (1961-1977), which was a successful rally car during the Group 4 era. In 1965, the BMW New Class Coupes were released, leading to the BMW 6 Series which remains in production to this day. The Lamborghini Miura (1966) and Alfa Romeo 33 Stradale (1967) mid-engined high-performance cars are often cited as
10506-466: Was used in the 3.5-litre V8 version of the MGB-GT-V8. An automatic three-speed transmission was also offered as a factory option, but was unpopular. Electrically engaged overdrive gearboxes were an available option on all MGBs. The overdrive unit was operational in third and fourth gears (until 1977, when overdrive was only operational in fourth) but the overall ratio in third gear overdrive was roughly
10609-417: Was without a doubt the first attempt to give real performance to a road car. Many of its features, such as a honeycomb radiator and gate gear change, were continued on the much improved version which Paul Daimler designed in 1899-1900. This was of course the famous Mercedes. It also laid down standards of chassis design which were to be followed, almost unthinkingly, for the next thirty years. Several variants of
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