128-705: The Jensen Interceptor is a grand touring car which was hand-built at the Kelvin Way Factory in West Bromwich , near Birmingham in England, by Jensen Motors between 1966 and 1976. The Interceptor name had been used previously by Jensen for the Jensen Interceptor made between 1950 and 1957 at the Carters Green factory. Jensen had extensively used glass-reinforced plastic for the fabrication of body panels in
256-677: A pilota da corsa at the 1949 Mille Miglia . The A6 1500 was the first road going production car to be offered by the Maserati factory, featuring a tubular chassis with independent front suspension and coil springs , the 1500 cc six-cylinder being derived from the Maserati brothers pre-war voiturette racing engines. The body of the A6 1500 was an elegant two-door fast-back coupé body, also by Pinin Farina. Enzo Ferrari , whose Scuderia Ferrari had been
384-695: A "much abused and confused term") are typically more "crude" compared to "sophisticated Grand Touring machinery". However, the popularity of using GT for marketing purposes has meant that it has become a "much misused term, eventually signifying no more than a slightly tuned version of a family car with trendy wheels and a go-faster stripe on the side". Historically, most GTs have been front-engined with rear-wheel drive , offering more cabin space than mid-mounted engine layouts. Softer suspensions, greater storage, and more luxurious appointments add to their appeal. The GT abbreviation—and variations thereof—are often used as model names. However, some cars with GT in
512-601: A 100 mph car. Lancia chose the Gran Turismo name for its new model and the suggestion could only have come from Vittorio Jano himself, for had he not been responsible for the original 1750 Alfa Romeo of the same name back in 1929? Four semi-ufficiali works B20 GTs, together with a number of privateer entrants, were sent to the Mille Miglia in April 1951, where the factory Bracco / Maglioli car finished second overall, behind only
640-562: A 6C Alfa Romeo and Maserati in 1948, along with the Fiat 1100 S coupé with its rear accommodation for children. The original Aurelia had been under-powered and, in 1951, the V6 was enlarged to 1991 cc, which was also extended to the coupé, though in 75 rather than 70 bhp form as the B20 was developed as a sporting model in its own right. In addition the B20 had a shorter wheelbase and a higher rear axle ratio, making it
768-460: A Ferrari sports racer of twice the engine capacity. Lancia Aurelias swept the GT 2.0 Liter division. In June 1951, Bracco was partnered with the "father of GT racing" himself, Johnny Lurani , to race a B20 GT at Le Mans, where they were victorious in the 2.0 liter sportscar division, placing a very creditable 12th overall. A 1–2 finish at the famous Coppa d'Oro delle Dolomiti, among other victories including
896-536: A GT car", was winner of the Vetture Chiuse category at the 1931 Mille Miglia. An improved and supercharged version, the 6C 1750 GTC Gran Turismo Compressore , won the Vetture a Guida Interna category of the 1932 Mille Miglia. The Alfa Romeo 6C 1750 was designed by Vittorio Jano, who would later be instrumental in the design of the 1951 Lancia Aurelia B20 GT. From the basic Fiat 508 Balilla touring chassis came
1024-410: A center differential (or similar device). The definition notes that part-time systems may have a low range. Full-time AWD systems drive both front and rear axles at all times via a center (interaxle) differential. The torque split of that differential may be fixed or variable depending on the type of center differential. This system can be used on any surface at any speed. The definition does not address
1152-464: A government demand for a four-wheel-drive passenger vehicle. The modern Geländewagen such as the Mercedes-Benz G-Class still feature some of the attributes, with the exception of fully independent suspension, since it can compromise ground clearance. The Unimog is also a result of Mercedes 4x4 technology. The first Russian-produced four-wheel-drive vehicle, also in part for civilian use, was
1280-527: A group of investors trading under the new Jensen Cars Limited brandname stepped in and relaunched production of the 1970s Interceptor, which was briefly re-introduced in the late 1980s as the Series 4 (S4) which was an updated version of the original Interceptor V8 series giving a new lifespan for the Jensen brand and its car production was resumed. The car came back as a low-volume hand-built and bespoke affair, marketed in
1408-658: A position similar to the Bugatti 57SC of 1939. In 1962 the GTO Ferrari coupés had a remarkable season of successes in G.T. racing and have become the standard by which any competition coupé is measured, and by steady development [the Ferrari 250GT] has become one of the world's greatest cars. 1953 saw the first serious attempt to series produce the Ferrari motor car, two models of the Type 250 Europa being produced. The cars were an evolution of
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#17328695106111536-481: A production GT sports car. While most 4WD systems split torque evenly, the Jensen split torque roughly 40% front, 60% rear by gearing the front and rear at different ratios. American Motors Corporation (AMC) acquired Kaiser's Jeep Division in 1970 and quickly upgraded and expanded the entire line of off-road 4WD vehicles. With its added roadworthiness, the top-range full-sized Grand Wagoneer continued to compete with traditional luxury cars . Partially hand-built, it
1664-449: A similar way to Bristol , with a price of £ 70,000. Though the body remained essentially the same as the last of the main production run of Series 3, the engine was a much smaller, Chrysler-supplied, 360 cubic inch (5.9-litre) which used more modern controls to reduce emissions comparatively and still producing about 250 bhp. In addition, the interior was slightly re-designed with the addition of modern "sports" front seats as opposed to
1792-415: A system that applies torque to all four wheels (permanently or on-demand) or is targeted at improving on-road traction and performance (particularly in inclement conditions), rather than for off-road applications. Some all-wheel drive electric vehicles use one motor for each axle, thereby eliminating a mechanical differential between the front and rear axles. An example of this is the dual-motor variant of
1920-423: A team of prototype cars of extremely advanced and interesting design. By 1954 these had undergone sufficient development to be placed on the market as the "300SL" , one of the costliest and most desirable cars of our time. The conventional chassis has been abandoned in favor of a complex structure of welded tubes , although the coil spring suspension is retained, and exceptionally large brakes are fitted, inboard at
2048-533: A total of 41,674 units made by 1928. Daimler-Benz also has a history in four-wheel drive. After the Daimler Motoren Gesellschaft had built a four-wheel-driven vehicle called Dernburg-Wagen , also equipped with four-wheel steering , in 1907, that was used by German colonial civil servant, Bernhard Dernburg, in Namibia ; Mercedes and BMW, in 1926, introduced some rather sophisticated four-wheel drives,
2176-520: A truck with dual rear wheels on two rear axles, so actually having ten wheels, its configuration would still be formulated as 6x4. During World War II, the U.S. military would typically use spaces and a capital 'X' – as "4 X 2" or "6 X 4". Four-wheel drive (4WD) refers to vehicles with two axles providing torque to four axle ends. In the North American market, the term generally refers to a system optimized for off-road driving conditions. The term "4WD"
2304-399: A two-door roadster, a two-door pickup truck, and a four-door phaeton, all equipped with a transfer case that engaged the front wheels, powered by a 1.3-litre, two-cylinder, air-cooled OHV V-twin engine. The 1937 Mercedes-Benz G5 and BMW 325 4×4 featured full-time four-wheel drive, four-wheel steering, three locking differentials, and fully independent suspension. They were produced because of
2432-412: A wheel is slipping, and only activates when wheel slip is detected. Therefore, typically no mechanism exists to actively prevent wheel slip (i.e., locking the differential in advance of wheel slip is not possible); rather, the system is designed to expressly permit wheel slip to occur, and then to attempt to send torque to the wheels with the best traction. If preventing all-wheel slip is a requirement, this
2560-423: Is a limiting design. The architecture of an AWD/4WD system can be described by showing its possible operating modes. A single vehicle may have the ability to operate in multiple modes depending on driver selection. The different modes are: In addition to these basic modes, some implementations can combine these modes. The system could have a clutch across the center differential, for example, capable of modulating
2688-736: Is a near- calque from the Italian language phrase gran turismo , which became popular in the English language in the 1950s, evolving from fast touring cars and streamlined closed sports cars during the 1930s. The grand touring car concept originated in Europe in the early 1950s, especially with the 1951 introduction of the Lancia Aurelia B20 GT , and features notable luminaries of Italian automotive history such as Vittorio Jano , Enzo Ferrari and Johnny Lurani . Motorsports became important in
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#17328695106112816-555: Is a type of car that is designed for high speed and long-distance driving with performance and luxury. The most common format is a front-engine, rear-wheel-drive two-door coupé with either a two-seat or a 2+2 arrangement. Grand tourers are often the coupé derivative of luxury saloons or sedans. Some models, such as the Ferrari 250 GT , Jaguar E-Type , and Aston Martin DB5 , are considered classic examples of gran turismo cars. The term
2944-413: Is described as "all-wheel drive" (AWD). However, "four-wheel drive" typically refers to a set of specific components and functions, and intended off-road application, which generally complies with modern use of the terminology. Four-wheel-drive systems were developed in many different markets and used in many different vehicle platforms . There is no universally accepted set of terminology that describes
3072-441: Is distributed to all four wheels, a third or 'center' differential can be used to distribute power between the front and rear axles. The described system handles extremely well, as it is able to accommodate various forces of movement and distribute power evenly and smoothly, making slippage unlikely. Once it does slip, however, recovery is difficult. If the left front wheel of a 4WD vehicle slips on an icy patch of road, for instance,
3200-458: Is exceeded at the low-traction side. A fairly recent innovation in automobiles is electronic traction control . It typically uses a vehicle's braking system to slow a spinning wheel. This forced slowing emulates the function of a limited-slip differential, and by using the brakes more aggressively to ensure wheels are being driven at the same speed, can also emulate a locking differential. This technique normally requires wheel sensors to detect when
3328-490: Is frequently used to refer to a class of vehicles in general. Syntactically, the first figure indicates the total number of axle ends and the second indicates the number of axle ends that are powered. Accordingly, 4×2 means a four-wheel vehicle that transmits engine torque to only two axle ends: the front two in front-wheel drive or the rear two in rear-wheel drive . Similarly, a 6×4 vehicle has three axles, two of which provide torque to two axle ends each. If this vehicle were
3456-460: Is much less acceptable for 4WD vehicles, because 4WD vehicles have twice as many wheels with which to lose traction, increasing the likelihood that it may happen. 4WD vehicles may also be more likely to drive on surfaces with reduced traction. However, since torque is divided between four wheels rather than two, each wheel receives roughly half the torque of a 2WD vehicle, reducing the potential for wheel slip. Many differentials have no way of limiting
3584-451: Is recognized as the first Ferrari gran turismo . After that race, the national governing body of Italian motorsport, CSAI ( Commissione Sportiva Automobilistica Italiana), officially introduced a new class, called Gran Turismo Internazionale , for cars with production over thirty units per year, thereby ruling out Ferrari's hand-built berlinettas . Ferrari's response for the new Italian Gran Turismo Internazionale championship in 1951
3712-548: Is typically designated for vehicles equipped with a transfer case that switches between 2WD and 4WD operating modes, either manually or automatically. All-wheel drive (AWD) was historically synonymous with "four-wheel drive" on four-wheeled vehicles, and six-wheel drive on 6×6s , and so on, being used in that fashion at least as early as the 1920s. Today in North America, the term is applied to both heavy vehicles and light passenger vehicles. When referring to heavy vehicles,
3840-399: The 159 and 166 models, including the 1949 Ferrari 166 Inter , a road-going berlinetta coupé with coachwork by Carrozzeria Touring and other coachbuilders. The Ferrari 166 'Inter' S coupé model won the 1949 Coppa Inter-Europa motor race. Regulations stipulated body form and dimensions but did not at this time specify a minimum production quantity. The car was driven by Bruno Sterzi, and
3968-431: The 250 GTO . A full Testa Rossa engine was employed (albeit with black crinkle-finish engine covers) with six twin-choke Webers. Power was up to 300 b.h.p. at 7,400 r.p.m. and with a lightweight 2000 lb body and chassis: the car was an immediate winner. Remarkable as it might be on the circuit, it is also a remarkable machine on the road. One American Ferrarist, who owned and raced many G.T. Ferraris, commented that
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4096-541: The Brasinca Uirapuru , with a distinctive large, curving wrap-around rear window that doubled as a tailgate . The original specification included electric windows, reclining front seats, a wood rimmed steering wheel, radio with twin speakers, reversing lights and an electric clock. Power steering was included as standard from September 1968. The Mark II was announced in October 1969, with slightly revised styling around
4224-557: The Canadian Military Pattern trucks , of which 4x4s were by far the most prevalent of their various driveline configurations. All told, North America built about 1 + 1 ⁄ 2 million 4x4 driven vehicles during the war, Availability of certain critical components, such transfer cases and especially constant-velocity joints affected development. Though not used much on commercial vehicles, all-wheel drive vehicles all needed these; and they would use two or three times
4352-451: The Fiat -based 1100 cc four-cylinder Cisitalia was no match on the race track for Ferrari's new hand-built 2000 cc V12 , and Ferrari dominated, taking the first three places. An 1100 cc class was hurriedly created, but not in time to save Cisitalia's business fortunes—the company's bankrupt owner Piero Dusio had already decamped to Argentina. The Cisitalia 202 SC gained considerable fame for
4480-691: The Fiat 8V "Otto Vu" was unveiled at the Geneva Salon in March 1952 to international acclaim. Although not raced by the factory, the Otto Vu was raced by a number of private owners. Vincenzo Auricchio and Piero Bozzinio raced to fifth in the gran turismo category of the 1952 Mille Miglia, and Ovidio Capelli placed third in the GT 2000 cc class at the Coppa della Toscana in June, with a special race-spec lightweight Zagato coupe;
4608-613: The GAZ-61 , developed in the Soviet Union in 1938. "Civilian use" may be a bit of a misnomer, as most, if not all, were used by the Soviet government and military (as command cars), but the GAZ-61-73 version is the first four-wheel-drive vehicle with a normal closed sedan body. Elements of the chassis were used in subsequent military vehicles such as the 1940 GAZ-64 and the 1943 GAZ-67 , as well as
4736-544: The Tesla Model S , which controls the torque distribution between its two motors electronically. According to the SAE International standard J1952, AWD is the preferred term for all the systems described above. The standard subdivides AWD systems into three categories. Part-time AWD systems require driver intervention to couple and decouple the secondary axle from the primarily driven axle, and these systems do not have
4864-531: The k. u. k. Hofwagenfabrik Ludwig Lohner & Co. in Vienna in 1899, presented to the public during the 1900 World Exhibition in Paris. The vehicle was a series hybrid car that used an electric hub motor at each wheel, powered by batteries, which were in turn charged by a gasoline-engine generator. It was clumsily heavy, and due to its unusual status, the so-called Lohner–Porsche is not frequently given its credit as
4992-453: The post-war era especially, have since become valuable cars among wealthy collectors. Within ten years, grand touring cars found success penetrating the new American personal luxury car market. The terms grand tourer , gran turismo , grande routière , and GT are among the most misused terms in motoring. The grand touring designation generally "means motoring at speed, in style, safety, and comfort". "Purists define gran turismo as
5120-504: The 1950s, driving a Zagato-bodied Fiat 8V, Elio emerged as the consummate gentleman racer in Italian GT championship events. Zagato, his father's firm, provided the lithe, lightweight aluminium bodies for many of the Lancias, Alfa Romeos, Abarths and Maseratis that dominated these meetings. Elio won 82 races out of the 150 he entered, and won four of the five championships he entered. Working with
5248-594: The 1955-1965 Chrysler 300 . Despite this, the United States, enjoying early post-war economic expansion , became the largest market for European grand-touring cars, supplying transportation for movie stars, celebrities and the jet set ; notably the Mercedes-Benz 300 SL (imported by Max Hoffman ), the Jaguar XK120 , and the Ferrari berlinettas (imported by Luigi Chinetti ). Classic grand-touring cars from
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5376-592: The 250 chassis was employed for improved handling and road-holding in corners, and top speed was up to 157 m.p.h. In 1957 Gendebien finished third overall in the Mille Miglia, and won the "index of performance". Alfonso de Portago won the Tour de France and GT races at Montlhéry and Castelfusano in a lightweight Carrozzeria Scaglietti 250 GT. Gendebien became a gran turismo specialist in 250 GTs when he wasn't driving sports racing Ferrari Testa Rossas ("Red Heads" for their red engine covers), achieving success in both
5504-472: The 440 in (7,200 cc) Chrysler engine for 1971. For 1971, two 440 ci engines were offered. One had a four-barrel carburetor and produced 305 hp SAE net. The other, which had three 2-barrel carburetors and produced 330 hp SAE net, was only available in 1971. Only 232 cars were built with the 440 "six pack", called the Jensen SP (with no "Interceptor" badging) and it had the distinction of being
5632-587: The 6 Ore di Pescara, rounded out an astonishing debut racing season for this ground-breaking car, winning its division in the Italian GT Championship for Umberto Castiglioni in 1951 . Lancia B20 GTs would go on to win the over 2.0 liter Italian GT Championship in 1953, 1954 and 1955 with the B20-2500 . A surprise to the international press, who were not expecting a gran turismo berlinetta from Italy's largest manufacturer of everyday standard touring models,
5760-436: The 6,276 cc (383 c.i.) with optional manual (Mark I, 22 built) or TorqueFlite automatic transmissions driving the rear wheels through a limited slip differential in a conventional Salisbury rear axle. In 1970, the 383 c.i. produced 335 hp SAE gross, or 270 hp SAE net. Since this engine was detuned by Chrysler for use with low octane petrol, and only produced 250 hp SAE net in 1971, Jensen chose to use
5888-647: The American Four Wheel Drive Auto Company (FWD) of Wisconsin , founded in 1908. (not to be confused with the term "FWD" as an initialism for front-wheel-drive ) Along with the 1 1 ⁄ 2 - and 2-ton Nash Quad (see below), the 3-ton FWD Model B became a standard military four-wheel-drive truck for the U.S. Army in World War I. Some 16,000 FWD Model B trucks were built for the British and American armies during World War I – about half by FWD and
6016-472: The April 1951 Coppa Inter-Europa, driven by Luigi Villoresi, and in June (chassis no. 0092E) was first in the gran turismo category at the Coppa della Toscana driven by Milanese Ferrari concessionaire and proprietor of Scuderia Guastalla, Franco Cornacchia. The 212 Export continued to serve Ferrari well in the Sports and GT categories until replaced by the 225 S, and although it would later be overshadowed by
6144-452: The CSAI were raced with the original chassis and engine layout as specified in the factory catalog and available for customers to buy; engines could be tuned and bored out, but the bodywork had to conform to regulations. The CSAI were concerned that FIA (known as AIACR at the time) ' Annexe C ' Sports cars were becoming little more than thinly-disguised two-seat Grand Prix racers, far removed from
6272-405: The G.T.O. is an even more pleasant car on the road! He maintains that it is most tractable and overheating in traffic congestions is no problem. In its short lifetime the 250GTO has established an enviable record. It is also one of the most sought after competition cars as evidenced by recent European suggestions that "black market" G.T.O.s bring higher prices than new ones. The demand is greater than
6400-557: The G1, the G4, and G4 following. Mercedes and BMW developed this further in 1937. The American Marmon-Herrington Company was founded in 1931 to serve a growing market for moderately priced four-wheel-drive vehicles. Marmon-Herrington specialized in converting Ford trucks to four-wheel drive and got off to a successful start by procuring contracts for military and commercial aircraft refueling trucks, 4×4 chassis for towing light weaponry, and an order from
6528-517: The GT category overall at this event was won by Franco Cornacchia's Ferrari 212 Export (refer above). Capelli and the 8V Zagato topped this accomplishment by winning the GT category of the Pescara 12 Hours in August, ahead of two Lancias. The new Fiat 8V garnered sufficient competition points over the season to become the national two-liter GT Champion (a feat it repeated every year until 1959). Elio Zagato ,
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#17328695106116656-590: The Giro Sicilia and Tour de France. In 1958, sports racing Testa Rossas swept the Manufacturer's Championship , and in 1959 the T.R. engine was adapted to the 250 GT. The spark plugs were relocated and each cylinder now had a separate intake port . Larger Weber twin-choke carburetors were employed in a triple configuration (sports racing T.R.s employed six) and some special customer cars had three four-choke Webers (one choke per cylinder). Dry-sump lubrication
6784-496: The Iraqi Pipeline Company for what were the largest trucks built at the time. The early Marmon-Herringtons proved to be the exception to the rule — 4WD cars and trucks developed in the 1930s were mainly built for governments, with (future) warfare applications in mind. Dodge developed its first four-wheel-drive truck in 1934 — a military 1 + 1 ⁄ 2 ton designated K-39-X-4(USA), of which 796 units were built for
6912-489: The J1952 standard notes secondary classifications resulting in a total of eight systems, designated as: Two wheels fixed to the same axle (but on the opposite axle ends) need to turn at different speeds as a vehicle goes around a curve. The reason is that the wheel that is located on the inner side of the curve needs to travel less distance than the opposite wheel for the same duration of time. However, if both wheels are connected to
7040-597: The Jeep, and also inline-four powered, the Land Rover appeared at the Amsterdam Motor Show in 1948. Originally conceived as a stop-gap product for the struggling Rover car company, despite chronic underinvestment, it succeeded far better than their passenger cars. Inspired by a Willys MB – the ubiquitous WWII "jeep" – that was frequently run off-road on the farm belonging to chief engineer Maurice Wilks , Land Rover developed
7168-548: The Mille Miglia was an epoch-making event, which told a wonderful story. The Mille Miglia created our cars and the Italian car industry. The Mille Miglia permitted the birth of GT, or grand touring cars, which are now sold all over the world. The Mille Miglia proved that by racing over open roads for 1,000 miles, there were great technical lessons to be learned by the petrol and oil companies and by brake, clutch, transmission, electrical and lighting component manufacturers, fully justifying
7296-483: The SIATA and Fiat aerodynamic gran turismo -style Berlinetta Mille Miglias of 1933 and 1935. Siata was a Turin, Italy-based Fiat tuner, typical of a popular class of Italian artisan manufacturers of small gran turismo , sports and racing cars—usually Fiat based—that came to be known in the 1970s as Etceterini , such as Nardi , Abarth , Ermini and, in 1946, Cisitalia . The Fiat and SIATA berlinettas , influenced by
7424-428: The U.S. Army in several configurations. Timken supplied front axles and transfer cases, added to militarized a civilian truck. The Timken transfer case was the first part-time design, that allowed the driver to engage or disengage four-wheel drive using a lever inside the cab. In spite of the limited 1930s U.S. military budgets, the '34 truck was liked well-enough that a more modern 1 + 1 ⁄ 2 ton truck
7552-480: The amount of engine power that gets sent to their attached output shafts. As a result, if a tire loses traction on acceleration, either because of a low-traction situation (e.g., driving on gravel or ice) or the engine power overcomes available traction, the tire that is not slipping receives little or no power from the engine. In very low-traction situations, this can prevent the vehicle from moving at all. To overcome this, several designs of differentials can either limit
7680-442: The amount of slip (these are called 'limited-slip' differentials) or temporarily lock the two output shafts together to ensure that engine power reaches all driven wheels equally. Locking differentials work by temporarily locking together a differential's output shafts, causing all wheels to turn at the same rate, providing torque in case of slippage. This is generally used for the center differential, which distributes power between
7808-415: The armchair style of the earlier models, as well as a revised dashboard and electronics. The then owner sold up in 1990 to an engineering company believed to be in a stronger position to manufacture the car; this lasted until 1993 with approximately 36 cars built, and while work commenced on development of a new Interceptor Series 5 (S5) for the 1990s however the receivers were called in for a second time and
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#17328695106117936-512: The cars ordinary motorists could purchase from the manufacturers' catalogs. Four-wheel drive A four-wheel drive , also called 4×4 ("four by four") or 4WD , is a two-axled vehicle drivetrain capable of providing torque to all of its wheels simultaneously. It may be full-time or on-demand, and is typically linked via a transfer case providing an additional output drive shaft and, in many instances, additional gear ranges . A four-wheel drive vehicle with torque supplied to both axles
8064-630: The chief stylist Ercole Spada , Zagato produced some of the most beautiful GT designs of the era; spare and muscular cars such as the Aston Martin DB4GTZ , the Alfa Romeo Junior TZ and SZ , and the Lancia Flaminia Sport . These were minimalist shapes bereft of superfluous trim that introduced phrases such as "double bubble" roof to the car body design language: twin shallow domes, devised by Elio, to give extra head room and strengthen
8192-436: The coachbuilder's son, was successful in competition with the Otto Vu in 1954 and 1955, attracting further customer interest and leading Zagato to eventually develop two different GT racing versions. Upon his passing in 2009, Elio Zagato was described as a leading figure of Italian GT racing and design: Elio Zagato, who has died aged 88, was one of the leading figures of Italian Gran Turismo (GT) racing and car-body design. In
8320-456: The company was liquidated. Jensen was one of the first manufacturers to equip a production car with four-wheel drive , in the 1967 Jensen FF ( Ferguson Formula). At the time it was hailed as a remarkable development, coming also with Dunlop Maxaret mechanical anti-lock brakes and traction control . The car is five inches (127 mm) longer than the Interceptor. Although looking virtually
8448-641: The company's new flagship replacing the FF and was one of the most powerful road cars anywhere in the world. This came with a vinyl roof, Learjet 8-track and a full louvred bonnet as standard. The 440 SP engine with its six pack carburettor produced 385 B.H.P. and a top speed of 147 mph (237 kph). SPs could be more economical than standard four-barrel Interceptors; 16–18 mpg could be achieved. Two hundred thirty-two SPs were made, 219 in RHD and 13 in LHD. A convertible with powered soft top
8576-473: The complete front-engine, four-wheel-drive system. The AMC Eagle was offered as a sedan , coupe , and station wagon with permanent automatic all-wheel drive passenger models. The new Eagles combined Jeep technology with an existing and proven AMC passenger automobile platform . They ushered a whole new product category of "sport-utility" or crossover SUV . AMC's Eagles came with the comfort and high-level appointments expected of regular passenger models and used
8704-409: The differential to the wheel, at different speeds. The differential does this by distributing angular force (in the form of torque ) evenly, while distributing angular velocity (turning speed) such that the average for the two output shafts is equal to that of the differential ring gear . When powered, each axle requires a differential to distribute power between the left and right sides. When power
8832-530: The driver of getting out to lock hubs and having to manually select between 2WD and 4WD modes, it dominated all other makes in FIA rally competition. Gene Henderson and Ken Pogue won the Press-on-Regardless Rally FIA championship with a Quadra Trac-equipped Jeep in 1972. American Motors introduced the innovative Eagle for the 1980 model year. These were the first American mass-production cars to use
8960-572: The early years of the war, they relied significantly on Lend-Lease vehicles, provided by the western allies. In 1943, they launched a further-developed version: the GAZ-67 . By contrast, the Axis powers ' closest equivalent to the jeep, the VW Kübelwagen , of which only some 50,000 were built, though being equipped with portal gear hubs, only had rear-wheel drive. Willys introduced the model CJ-2A in 1945,
9088-442: The enjoyment, excitement and comfort of open-road touring." According to Sam Dawson, news editor of Classic Cars , "the ideal is of a car with the ability to cross a continent at speed and in comfort yet provide driving thrills when demanded" and it should exhibit the following: Grand tourers emphasize comfort and handling over straight-out high performance or ascetic , spartan accommodations. In comparison, sports cars (also
9216-575: The evolution of the grand touring concept, and grand touring entries are important in endurance sports-car racing . The grand touring definition implies material differences in performance, speed, comfort, and amenities between elite cars and those of ordinary motorists. In the post-war United States, manufacturers were less inclined to adopt the "ethos of the GT car", preferring to build cars "suited to their long, straight, smooth roads and labor-saving lifestyles " with wide availability of powerful straight-six and V8 engines in all price-ranges like
9344-460: The fastest category of sports car racing from 1994 to 2001. The inclusion of "grand tourer", " gran turismo ", "GT" or similar in the model name does not necessarily mean that the car is a grand tourer since several manufacturers have used the terms for the marketing of cars that are not grand tourers. Grand touring car design evolved from vintage and pre-World War II fast touring cars and streamlined closed sports cars . Italy developed
9472-433: The first gran turismo cars. The small, light-weight, and aerodynamic coupés , named the " Berlinetta ", originated in the 1930s. A contemporary French concept, known as " grande routière ", emphasized style, elegance, luxury, and gentlemanly transcontinental touring; the grande routières were often larger cars than the Italian gran turismos . Italian designers saw that compared to traditional open two-seat sports car ,
9600-486: The first four-wheel driven automobile. The world's first four-wheel-drive car directly powered by an internal-combustion engine, and the first with a front-engine, four-wheel-drive layout , was the Dutch Spyker 60 H.P., Commissioned for the Paris to Madrid race of 1903, it was presented that year by brothers Jacobus and Hendrik-Jan Spijker of Amsterdam . The two-seat sports car featured permanent four-wheel drive and
9728-522: The first full-production four-wheel-drive vehicle for sale in the general marketplace. Due to the ubiquitous World War II Jeep's success, its rugged utilitarianism set the pattern for many four-wheel-drive vehicles to come. Dodge also started production of the civilian 4WD Power Wagon trucks, for the 1946 model year. Both the Willys and the Dodge were developed directly from their WW II predecessors. Equally boxy to
9856-542: The first of the lightweight grand touring coupés, driven by Gendebien , battled with the Mercedes 300SL of Metternich and Einsendel to come in fifth overall and first in G.T. over 2,000 c.c. The G.T. Ferrari had arrived! Motor Sport , March 1963. After its 1956 debut, the 250 GT "went from strength to strength". Powered by the Colombo 250 engine, output was up to 240 b.h.p. at 7,000 r.p.m. A short-wheelbase (SWB) version of
9984-690: The forerunner of the designs that followed from other manufacturers. The automobile press at the time tested the traction of the Eagles and described it as far superior to the Subaru's and that it could beat many so-called off-road vehicles. Four Wheeler magazine concluded that the AMC Eagle was "The beginning of a new generation of cars." The Eagles were popular (particularly in the snowbelt ), had towing capacity, and came in several equipment levels including sport and luxury trims. Two additional models were added in 1981,
10112-400: The front and the rear axles. While a drivetrain that turns all wheels equally would normally fight the driver and cause handling problems, this is not a concern when wheels are slipping. Some designs use gearing to create a small rotational difference that hastens torque transfer. A typical Torsen II differential can deliver up to twice as much torque to the high-traction side before traction
10240-452: The front axle torque from a full-time mode with the 30:70 torque split of the center differential to the 0:100 torque split of the 2WD mode. In 1893, before the establishment of the modern automotive industry in Britain, English engineer Bramah Joseph Diplock patented a four-wheel drive system for a steam-powered traction engine , including four-wheel steering and three differentials , which
10368-413: The headlamps, front grille and bumper and revised rear lights. The interior was substantially revised in order to meet US regulations, and air conditioning was an option. The Mark III , introduced in 1971, revised the front grille, headlamp finishers and bumper treatment again. It had GKN alloy wheels and air conditioning as standard, and revised seats. It was divided into G-, H-, and J-series depending on
10496-404: The inclusion or exclusion of a low-range gear. On-demand AWD systems drive the secondary axle via an active or passive coupling device or "by an independently powered drive system". The standard notes that in some cases, the secondary drive system may also provide the primary vehicle propulsion. An example is a hybrid AWD vehicle where the primary axle is driven by an internal combustion engine and
10624-545: The increase in weight and frontal area of an enclosed cabin for the driver and mechanic could be offset by the benefits of streamlining to reduce drag . Independent carrozzeria ( coachbuilders ) provided light and flexible fabric coachwork for powerful short-wheelbase fast-touring chassis by manufacturers such as Alfa Romeo . Later, Carrozzeria Touring of Milan pioneered sophisticated superleggera (super light-weight) aluminum bodywork, allowing for even more aerodynamic forms. The additional comfort of an enclosed cabin
10752-555: The internationally famous 250 GT , the 212 Export was an important model in the successful line of Colombo-engined V12 GT cars that made Ferrari legendary. 1951 was the stunning debut of Lancia's Aurelia B20 GT. Lancia had begun production in 1950 of their technically advanced Aurelia saloon; the design had been overseen by Vittorio Jano. At the 1951 Turin Motor Show , the Pinin Farina-bodied gran turismo B20 coupé version
10880-415: The military on a large scale, four-wheel drive and all-wheel-drive vehicles had not found their place. The World War II Jeep , originally developed by American Bantam , but mass-produced by Willys and Ford, became the best-known four-wheel-drive vehicle in the world during the war. The American Dodge WC series and Chevrolet G506 4x4 variants were also produced by the hundreds of thousands, as well as
11008-405: The model name are not actually grand touring cars. Among the many variations of GT are: Several past and present motor racing series have used "GT" in their name. These include: There have also been several classes of racing cars called GT. The Group GT3 regulations for modified road cars have been used for various racing series worldwide since 2006. The Group GT1 regulations were used for
11136-455: The more refined yet still off-road capable luxury 4WD Range Rover in the 1970s. With the acquisition of the "Jeep" name in 1950, Willys had cornered the brand. Its successor, Kaiser Jeep , introduced a revolutionary 4WD wagon called the Wagoneer in 1963. Not only was it technically innovative, with independent front suspension and the first automatic transmission coupled to 4WD, but also it
11264-401: The most powerful car ever to have been made by Jensen. For 1972, the 440 c.i. engine with three 2-barrel carburetors was no longer produced by Chrysler. The 440 ci engine that remained was detuned to 280 hp SAE net. Chrysler continued to offer a high performance 440 c.i. engine through to 1976 when it only produced 255 hp SAE net. The Interceptor may have taken some styling cues from
11392-513: The number of driven axles, meaning more gears to cut for all the differentials. Produced up to the war by a few specialized firms with limited capacity, from spring 1942, Ford, Dodge, and Chevrolet joined in fabricating these in a quantity more than a 100-fold greater than in 1939. Although Russia had their own jeep-like vehicle (the GAZ-64) up and running in 1940, a year earlier than the American jeep, in
11520-425: The off-road technology for an extra margin of safety and traction. The Eagle's thick viscous fluid center differential provided a quiet and smooth transfer of power that was directed proportionally to the axle with the greatest traction. This was a true full-time system operating only in four-wheel drive without undue wear on suspension or driveline components. No low range was used in the transfer case. This became
11648-459: The old adage that motor racing improves the breed. The Mille Miglia is still celebrated today as one of the world's premier historic racing events. A closed sports coupé almost prevailed at Le Mans in 1938, when a carrozzeria touring-bodied Alfa Romeo 8C 2900B , driven by Raymond Sommer and Clemente Biondetti , led the famous 24-hour race from the third lap until early Sunday afternoon, retiring only due to engine problems. Johnny Lurani
11776-596: The outstanding design of its Pinin Farina coachwork , and is credited with greatly influencing the style of subsequent berlinetta or fastback gran turismo coupés. A Cisitalia 202 "GT" is exhibited at the Museum of Modern Art in New York City . The Maserati A6 1500 won the 1500 cc class at the 1949 Coppa-Europa. It was driven by Franco Bordoni , former fighter ace of the Regia Aeronautica who had debuted as
11904-568: The postwar GAZ-69 , and the properly civilian GAZ-M-72, based on the rear-wheel drive GAZ-20 "Victory" and built from 1955 to 1958. Soviet civilian life did not allow the proliferation of civilian products such as the Jeep in North America, but through the 1960s, the technology of Soviet 4×4 vehicles stayed on par with British, German, and American models, even exceeding it in some aspects, and for military purposes just as actively developed, produced, and used. Until "go-anywhere" vehicles were needed for
12032-452: The preceding two decades, but the new Interceptor was a return to a steel body-shell. The body was designed by an outside firm, Carrozzeria Touring of Italy, rather than the in-house staff. The early bodies were built in Italy by Vignale , before Jensen took production in house, making some subtle body modifications. Jensen Motors used Chrysler V8 engines for the Interceptor, starting with
12160-462: The previous models, available with either the Colombo or Lampredi versions of the 250 V12 engine, coil spring front suspension, an improved sports gearbox (four speeds) with Porsche synchromesh , large drum brakes and luxurious outfitting. A few appeared in motorsports but did not initially threaten the international Mercedes-Benz 300 SL and Porsche 356 competition. In the Mille Miglia of 1956
12288-431: The production year. The 6.3-litre 383 ci engine was superseded by the 7.2-litre 440 ci in 1971. Jensen had fallen on hard times by 1975, owing to the then world-wide recession, and to problems with its Jensen-Healey sports car . The company was placed into receivership , and the receivers allowed production to continue until the available cache of parts was exhausted. Production of the Interceptor ended in 1976. Later,
12416-633: The racing division of Alfa Romeo from 1929 until 1938, parted ways from Alfa Romeo in 1939: Enzo Ferrari's first car (itself an Etceterini) the Fiat-based Auto Avio Costruzioni 815 racing sports car , debuted at the 1940 Mille Miglia. Two were produced. The first car constructed in Ferrari's name, the V12 125 S , also a racing sports car, debuted in 1947 at the Piacenza racing circuit. Again, only two were produced, but they rapidly evolved into
12544-417: The rear. The engine is sharply inclined to the near-side in the interests of a low bonnet-line, and with Bosch fuel injection produces 240 b.h.p. at 6,000 r.p.m. Claimed maximum speed is in excess of 160 m.p.h. and although the car is by no means small, dry weight has been kept to 23 cwt . The depth of the multi-tubular frame prevents the use of conventional side-hinged doors and these cars are fitted with
12672-542: The rest by other licensed manufacturers. Only about 20% of the trucks built were four-wheel drives, but the 4x4s were more often on the front lines. About 11,500 of the Jeffery / Nash Quad trucks were built for similar use between 1913 and 1919. The Quad not only came with four-wheel-drive and four-wheel brakes, but also featured four-wheel steering. The Quad was one of the first successful four-wheel drive vehicles ever to be made, and its production continued for 15 years with
12800-502: The roof-hinged "gull-wing" doors which characterize an exceedingly handsome and practical car. An open touring version is available. In competition the "300SL" has become a powerful contender, and abetted by the success of the Grand Prix cars [and " 300 SLR "] has captured a substantial portion of the export market." The 250GT Ferrari must surely represent the ultimate in modern high-speed sporting travel, or GT competition, and holds today
12928-409: The roof. For lightness, Zagato pioneered the use of Perspex and of aerodynamics, with trademark forms such as the split or stub tail. Indeed, Elio would take prototypes out on the autostrada covered in wool tufts in order to test air flow over the body. The 8V Otto Vu earned its name courtesy of its high-performance V8 engine (Ford having already trademarked "V8"). The German automotive industry
13056-489: The same axle driveshaft, they always have to spin at the same speed relative to each other. When going around a curve, this either forces one of the wheels to slip, if possible, to balance the apparent distance covered, or creates uncomfortable and mechanically stressful wheel hop. To prevent this, the wheels are allowed to turn at different speeds using a mechanical or hydraulic differential . This allows one driveshaft to independently drive two output shafts, axles that go from
13184-408: The same, the extra length can be seen from additional side vent ahead of the doors on the front flanks, and an additional swage line in the leading edge of the front wing. Press articles from the time quote "drag-strip" performance when describing the car. In total 320 FFs were produced; 195 Mark I, 110 Mark II and 15 Mark III. The Jensen SP, with a Six-Pack carburettor system, was launched in 1971, as
13312-412: The secondary axle is driven by an electric motor. When the internal combustion engine is shut off, the secondary, electrically driven axle is the only driven axle. On-demand systems function primarily with only one powered axle until torque is required by the second axle. At that point, either a passive or active coupling sends torque to the secondary axle. In addition to the above primary classifications,
13440-440: The slipping wheel spins faster than the other wheels due to the lower traction at that wheel. Since a differential applies equal torque to each half-shaft, power is reduced at the other wheels, even if they have good traction. This problem can happen in both 2WD and 4WD vehicles, whenever a driven wheel is placed on a surface with little traction or raised off the ground. The simplistic design works acceptably well for 2WD vehicles. It
13568-474: The subcompact SX/4 and Kammback. A manual transmission and a front axle-disconnect feature were also made available for greater fuel economy. During 1981 and 1982, a unique convertible was added to the line. The Eagle's monocoque body was reinforced for the conversion and had a steel targa bar with a removable fiberglass roof section. The Eagle station wagon remained in production for one model year after Chrysler acquired AMC in 1987. Total AMC Eagle production
13696-453: The successful Alfa Romeo 6C GT/GTC coupés , competed in the Mille Miglia endurance race and were significant among Weymann and Superleggera enclosed sporting cars appearing in the 1930s. They featured tuned Fiat engine and chassis, and bespoke carrozzeria , in common with the landmark post-war Cisitalia 202 SC , and are among the first small-displacement gran turismos . The first recognised motor race specifically for gran turismo cars
13824-504: The supply. In November 2016, it was reported that a 1962 Ferrari 250 GTO was being offered for public sale—normally brokers negotiate deals between extremely wealthy collectors "behind closed doors". GTOs had previously been auctioned in 1990 and 2014. The 2017 sale was expected to reach US$ 56,000,000.00, the particular GTO concerned (the second of just thirty-six ever made) thus set to become the world's most expensive car. The Italian Mille Miglia thousand-mile race, held from 1927 to 1957,
13952-617: The term is increasingly applied to mean "permanent multiple-wheel drive" on 2×2 , 4×4, 6×6, or 8×8 drive-train systems that include a differential between the front and rear drive shafts. This is often coupled with some sort of antislip technology, increasingly hydraulics-based, that allows differentials to spin at different speeds, but still be capable of transferring the torque from a wheel with poor traction to one with better. Typical AWD systems work well on all surfaces, but are not intended for more extreme off-road use. When used to describe AWD systems in light passenger vehicles, it refers to
14080-416: The various architectures and functions. The terms used by various manufacturers often reflect marketing rather than engineering considerations or significant technical differences between systems. SAE International 's standard J1952 recommends only the term "all-wheel drive" with additional subclassifications that cover all types of AWD/4WD/4x4 systems found on production vehicles. "Four-by-four" or "4×4"
14208-609: Was 170 bhp from the 2600cc Gioacchino Colombo-designed 'short-block' V12 engine , evolved from the earlier Ferrari 166 (2000cc) and 195 (2300cc). All versions came with the standard Ferrari five-speed non-synchromesh gearbox and hydraulic drum brakes. All 1951 Ferraris shared a double tube frame chassis design evolved from the 166. Double-wishbone front suspension with transverse leaf spring , and live rear axle with semi-elliptic leaf springs and radius rods were employed. The Ferrari 212 Export (212 MM) gran turismo berlinetta (chassis No. 0070M) debuted in first-place overall at
14336-820: Was also the first car equipped with a six-cylinder engine, as well as four-wheel braking. Later used as a hill-climb racer, it is now an exhibit in the Louwman Museum (the former Nationaal Automobiel Museum) in the Hague , the Netherlands. Designs for four-wheel drive in America first came from the Twyford Motor Car Company . The Reynolds-Alberta Museum has a four-wheel-drive vehicle, named " Michigan ", from 1905 in unrestored storage. The first four-wheel-drive vehicles to go into mass production were built by (what became)
14464-509: Was beneficial for the Mille Miglia road race held in Italy's often wintry north. The first car to be named " gran turismo " was the 1929 Alfa Romeo 6C 1750 Gran Turismo , a sporting dual-purpose road/race chassis and engine specification that was available with a wide variety of body styles or carrozzeria . The influential Weymann fabric-bodied berlinetta version by Carrozzeria Touring, "an early example of what we generally perceive to be
14592-412: Was central to the evolution of the gran turismo concept. The event was one of the most important on the Italian motor-sport calendar and could attract up to five million spectators. Winning drivers such as Tazio Nuvolari , Rudolf Caracciola , and Stirling Moss ; and manufacturers such as Alfa Romeo, BMW , Ferrari and Porsche would become household names. According to Enzo Ferrari: In my opinion,
14720-407: Was devastated by the second World War, but in the post-war period a small number of firms brought it to prominence again. The emergence of the classic Porsche 356 is covered in the accompanying sports car article. In 1957 author John Stanford wrote: "The post-war Mercedes sports cars are in a way even more remarkable than those of Porsche . The firm was particularly badly hit by the war and it
14848-590: Was developed, and 1,700 RF-40-X-4(USA) trucks were produced in 1938, and 292 TF-40-X-4(USA) in 1939. Starting in 1936, Japanese company Tokyu Kurogane Kogyo built roughly 4,700 four-wheel-drive roadsters, called the Kurogane Type 95 reconnaissance car, used by the Imperial Japanese Army from 1937 until 1944, during the Second Sino-Japanese War . Three different bodystyles were manufactured –
14976-409: Was employed, and the camshaft valve timing was only slightly less than the full-race Testa Rossas . G.T. power was up to 267 b.h.p. at 7,000 r.p.m. (240 b.h.p at 6,800 rpm for road versions). Experiments were conducted with Dunlop disc brakes, which were adopted in 1960, along with an even shorter wheelbase for competizione versions. In 1962, the definitive competition gran turismo was unveiled,
15104-461: Was equipped and finished as a regular passenger automobile. In effect, it was the ancestor of the modern SUV . The luxury AMC or Buick V8 -powered Super Wagoneer produced from 1966 to 1969 raised the bar even higher. Jensen applied the Formula Ferguson (FF) full-time all-wheel-drive system to 318 units of their Jensen FF built from 1966 to 1971, marking the first time 4WD was used in
15232-485: Was impressed by the dominant performance at the Mille Miglia in 1940, by a carrozzeria touring-bodied BMW 328 coupé, winning the event at over 100 mph average speed, driven by Fritz Huschke von Hanstein and Walter Bäumer : The BMW team included a splendid aerodynamic Berlinetta , wind tunnel designed by German specialists, that was extremely fast at 135 mph... I couldn't believe the speeds these BMWs were capable of. Italy's national governing body of motorsport
15360-779: Was introduced in 1974, mainly intended for the American market but also sold in Europe. Two hundred sixty-seven convertibles were made. Rarer still is the Coupé version introduced in 1975; just 60 were made in the one year before the company's demise. The coupé was derived from the convertible and therefore lacks the distinctive rear window of the regular car. A Jensen specialist JIA based in Banbury Oxfordshire, England, rebuilds original Interceptors using modern components, with General Motors supplied LS 6.2-litre naturally aspirated or supercharged engines and six-speed automatic or manual transmissions. In May 2010, Jensen International Automotive
15488-443: Was relatively unchanged during its production through 1991, even after Chrysler 's buyout of AMC. Subaru introduced the category-expanding Leone in 1972, an inexpensive compact station wagon with a light-duty, part-time four-wheel-drive system that could not be engaged on dry pavement. In September, AMC introduced Quadra Trac full-time AWD for the 1973 model year Jeep Cherokee and Wagoneer. Due to full-time AWD, which relieved
15616-467: Was set up, with the financial backing of Carphone Warehouse founder and chairman Charles Dunstone who joined its board of directors. A small number of Jensen Interceptor Ss, which had started production under a previous company, were completed by Jensen International Automotive (JIA), in parallel with JIA's own production of the new Jensen Interceptor R; deliveries of the latter started at the beginning of 2011. Grand tourer A grand tourer ( GT )
15744-426: Was several years before anything but a nominal production of cars could be undertaken. In 1951 appeared the "300" , a luxurious and fast touring car with a single-camshaft six-cylinder engine of 2996 c.c. and chassis derived from the pre-war cars with swing-axle rear suspension. The "300S" was a three-carburetor edition, but in 1952 great interest was aroused by the almost invincible performance in sports-car racing of
15872-425: Was subsequently built. The development also incorporated Bramah's Pedrail wheel system in what was one of the first four-wheel drive automobiles to display an intentional ability to travel on challenging road surfaces. It stemmed from Bramagh's previous idea of developing an engine that would reduce the amount of damage to public roads. Ferdinand Porsche designed and built a four-wheel-driven electric vehicle for
16000-576: Was the Commissione Sportiva Automobilistica Italiana (CSAI). Count Giovanni Lurani Cernuschi (popularly known as Johnny Lurani) was a key commissioner. He was also a senior member of the world governing body, the Fédération Internationale de l'Automobile (FIA). Lurani was instrumental in designing the regulations for the Italian 1937 Turismo Nazionale championship, whereby production vehicles approved by
16128-472: Was the 1949 Coppa Inter-Europa held at Monza . It was initially hoped by Italian motor industry observers that the small and struggling Italian sports and racing car manufacturer, Cisitalia, would find in the 1949 Coppa Inter-Europa regulations (initially called Turismo Veloce or Fast Touring) a category for its Cisitalia Tipo 202 SC —the road-going production coupé version of Cisitalia's single-seat D46 racing car and two-seat 202 open sports car. However,
16256-424: Was the road/race Ferrari 212 . Twenty-seven short-wheelbase competition versions called Export, some with increasingly popular gran turismo -style berlinetta coupé coachwork, were produced for enthusiasts (Ferrari called the first example 212 MM ) while the road version was called Inter . The Ferrari 212 Export featured long-range fuel tanks, high compression pistons and triple Weber 32 DCF carburettors ; power
16384-491: Was unveiled to an enthusiastic motoring public. Here, finally, according to historians Jonathan Wood and Sam Dawson, was a fully realized production GT car, representing the starting point of the definitive grand tourer: This outwardly conventional saloon bristled with innovation and ingenuity, in which the masterly hand of Vittorio Jano is apparent. In the B20 are elements of the Cistalia of 1947, coupés which Pinin undertook on
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