Lotus Cortina
Encyclopedia
The Lotus-Cortina is a high-performance car
Automobile
An automobile, autocar, motor car or car is a wheeled motor vehicle used for transporting passengers, which also carries its own engine or motor...

, which was produced in the United Kingdom
United Kingdom
The United Kingdom of Great Britain and Northern IrelandIn the United Kingdom and Dependencies, other languages have been officially recognised as legitimate autochthonous languages under the European Charter for Regional or Minority Languages...

 from 1963 to 1970 by the Ford
Ford Motor Company
Ford Motor Company is an American multinational automaker based in Dearborn, Michigan, a suburb of Detroit. The automaker was founded by Henry Ford and incorporated on June 16, 1903. In addition to the Ford and Lincoln brands, Ford also owns a small stake in Mazda in Japan and Aston Martin in the UK...

 in collaboration with Lotus Cars
Lotus Cars
Lotus Cars is a British manufacturer of sports and racing cars based at the former site of RAF Hethel, a World War II airfield in Norfolk. The company designs and builds race and production automobiles of light weight and fine handling characteristics...

. The original version, which was based on the Ford Cortina Mark 1, was promoted by Ford as the "Consul Cortina developed by Lotus", with "Consul" later being dropped from the name. The Mark 2 was based on the Ford Cortina Mark 2  and was marketed by Ford as the "Cortina Lotus".

Mk1

The history of the Lotus Cortina began in 1961. Colin Chapman
Colin Chapman
Anthony Colin Bruce Chapman CBE was an influential British designer, inventor, and builder in the automotive industry, and founder of Lotus Cars....

 had been wishing to build his own engines for Lotus, mainly because the Coventry Climax
Coventry Climax
Coventry Climax was a British forklift truck, fire pump, and speciality engine manufacturer.-History:The company was started in 1903 as Lee Stroyer, but two years later, following the departure of Stroyer, it was relocated to Paynes Lane, Coventry, and renamed to Coventry-Simplex by H...

 unit was so expensive. Colin Chapman's chance came when he commissioned Harry Mundy
Harry Mundy
Harry Mundy was a British car engine designer and motoring magazine editor.He was educated at King Henry VIII School in Coventry and went on to serve his apprenticeship with Alvis. He left them in 1936 to join English Racing Automobiles in Bourne, Lincolnshire as a draughtsman...

 (a close friend and designer of the Coventry Climax engine and technical editor for Autocar
Autocar
Autocar is a weekly British automobile magazine published by Haymarket Motoring Publications Ltd. It refers to itself as "The World's oldest car magazine".-History:...

) to design a twin-cam version of the Ford Kent engine. Most of the development of the engine was done on the 997cc and 1,340cc bottom end, but in 1962 Ford released the 116E five bearing 1,499 cc engine and work centred on this. Keith Duckworth
Keith Duckworth
David Keith Duckworth, , was an English mechanical engineer. He is most famous for designing the Cosworth DFV engine, an engine that revolutionised the sport of Formula One....

, from Cosworth
Cosworth
Cosworth is a high performance engineering company founded in London in 1958, specialising in engines and electronics for automobile racing , mainstream automotive and defence industries...

, played an important part in tuning of the engine. The engine's first appearance was in 1962 at the Nürburgring
Nürburgring
The Nürburgring is a motorsport complex around the village of Nürburg, Germany. It features a modern Grand Prix race track built in 1984, and a much longer old North loop track which was built in the 1920s around the village and medieval castle of Nürburg in the Eifel mountains. It is located about...

 in a Lotus 23 driven by Jim Clark
Jim Clark
James "Jim" Clark, Jr OBE was a British Formula One racing driver from Scotland, who won two World Championships, in 1963 and 1965....

. Almost as soon as the engine appeared in production cars (Lotus Elan
Lotus Elan
Lotus Elan is the name of two convertible cars and one fixed head coupé produced by Lotus Cars. The original Type 26, 26R Racing version , 36R Racing version , 36 Fixed Head Coupe, 45 Drop Head Coupe, and the "Type 50" +2 Coupe, circa 1962 to 1975, are commonly known as the '60s Elans...

), it was recalled and replaced with a larger capacity unit (82.55 mm bore to give 1,558 cc). This was in order to get the car closer to the 1.6 litre capacity class in motorsport.

Whilst the engine was being developed, Walter Hayes
Walter Hayes
Walter Hayes CBE was an English journalist, and later public relations executive for Ford.Hayes was key in developing Ford's Formula One program, by signing Jackie Stewart and funding the building of the Cosworth DFV V8 Formula One racing engine; and the creation of the Premier Automotive Group...

 (Ford) asked Colin Chapman if he would fit the engine to 1,000 Ford saloons for Group 2 homologation
Homologation
Homologation is a technical term, derived from the Greek homologeo for "to agree", which is generally used in English to signify the granting of approval by an official authority...

. Chapman quickly accepted, although it must have been very busy in the Cheshunt
Cheshunt
Cheshunt is a town in Hertfordshire, England with a population of around 52,000 according to the United Kingdom's 2001 Census. It is a dormitory town and part of the Greater London Urban Area and London commuter belt served by Cheshunt railway station...

 plant, with the Elan about to be launched. The Type 28 or Lotus-Cortina or Cortina-Lotus (as Ford liked to call it) was duly launched. Ford supplied the 2-door Cortina bodyshells and took care of all the marketing and selling of the cars, whilst Lotus did all the mechanical and cosmetic changes. The major changes involved installing the 1,558 cc (105 bhp) engine, together with the same close-ratio gearbox as the Elan. The rear suspension was drastically altered and lightweight alloy panels were used for doors, bonnet and boot. Lightweight casings were fitted to gearbox and differential. All the Lotus factory cars were painted white with a green stripe (although Ford built some for racing in red, and one customer had a dark blue stripe due to being superstitious about green). The cars also received front quarter bumpers and round Lotus badges were fitted to rear wings and to the right side of the radiator panel (from the driver's position).

Interior modifications were limited to a centre console designed to accommodate the new gear lever position, different seats and the later style dashboard, featuring tachometer
Tachometer
A tachometer is an instrument measuring the rotation speed of a shaft or disk, as in a motor or other machine. The device usually displays the revolutions per minute on a calibrated analogue dial, but digital displays are increasingly common...

, speedometer
Speedometer
A speedometer is a gauge that measures and displays the instantaneous speed of a land vehicle. Now universally fitted to motor vehicles, they started to be available as options in the 1900s, and as standard equipment from about 1910 onwards. Speedometers for other vehicles have specific names...

, oil pressure, water temperature and fuel level gauges. A wood-rimmed steering wheel was fitted.

The suspension changes to the car were quite extensive; the car received shorter struts up front, forged track control arms and 5.5J by 13 steel wheel rims. The rear was even more radical with vertical coil spring/dampers replacing the leaf springs and two trailing arms with a A- bracket (which connected to the differential housing and brackets near the trailing arm pivots) sorting out axle location. To support this set-up, further braces were put behind the rear seat and from the rear wheelarch down to chassis in the boot. The stiffening braces meant that the spare wheel had to be moved from the standard Cortina's wheel well and was bolted to the left side of the boot floor. The battery was also relocated to the boot, behind the right wheelarch. Both of these changes made big improvements to overall weight distribution. Another improvement the Lotus Cortina gained was the new braking system (9.5 in (241.3 mm) front discs) which were built by brake specialist Girling. This system also was fitted to Cortina GT's but without a servo, which was fitted in the Lotus Cortina engine bay.

Initially, the engines were built by J. A Prestwich of Tottenham and then Villiers
Villiers Engineering
Villiers Engineering was a manufacturer of motorcycles and cycle parts, and an engineering company based in Villiers Street, Wolverhampton, England....

 of Wolverhampton. In 1966, Lotus moved to Hethel
Hethel
Hethel is a small village in Norfolk, England, near the historic market town of Wymondham, and approximately 10 miles south of the city of Norwich....

 in Norwich where they had their own engine building facilities. The Lotus Cortina used a 8 in (203.2 mm) diaphragm-spring clutch, whereas Ford fitted coil-spring clutches to the rest of the range. The remainder of the gearbox was identical to the Lotus Elan. This led to a few problems because although the ultra-close gear ratios were perfect for the race track or open road, the clutch was given a hard time in traffic. The ratios were later changed.

The early cars were very popular and earned some rave reviews; one magazine described the car as a tin-top version of a Lotus 7. It was 'THE car' for many enthusiasts who before had to settle for a Cortina GT or a Mini-Cooper and it also amazed a lot of the public who were used to overweight 'sports cars' like the Austin-Healey 3000
Austin-Healey 3000
The Austin-Healey 3000 is a British sports car built from 1959 to 1967, and is the best known of the "big" Healey models. The car's bodywork was made by Jensen Motors, and the vehicles were assembled at the BMC Abingdon works....

. The launch was not perfect however, the car was too specialist for some Ford dealerships who did not understand the car; there are a few stories of incorrect parts being fitted at services. There were a few teething problems reported by the first batch of owners, (most of these problems show how quickly the car was developed) some of the engines were down on power, the gear ratios were too close and the worst problem was the differential housing coming away from the casing. This problem was mainly caused by the high loads put on the axle because of the A bracket it was an integral part of the rear suspension. This was made even worse by the fact any oil lost from the axle worked its way on to the bushes of the A bracket. There were 4 main updates made to the Mk1 Lotus during its production to solve some of these problems. The first change was a swap to a two-piece prop shaft and the lighter alloy transmission casing were changed for standard Ford items; this also included swapping the ultra close ratio gears for Cortina GT gear ratios, the main difference was 1st, 2nd and reverse were much higher ratios. from 1964, standard panels were used rather than the light alloy ones. Alloy items and ultra-close ratios coulds be specified when buying new cars.

The 2nd main change came in late 1964 when the entire Cortina range had a facelift which included a full width front grille and aeroflow outlets in the rear quarters because the Lotus Cortinas also gained Ford's new ventilation system which also included an update to the interior. The third and probably most important change came in mid-1965, when the Lotus rear suspension was changed for the leaf springs and radius arms of the Cortina GT. This replaced all the stiffening tubing as well. The last update also came in 1965 when the rear drums were swapped for self adjusting items and also the famous 2000E
Ford Corsair
The Ford Consul Corsair, manufactured by Ford Motor Company in the United Kingdom, was a midsize car introduced at the London Motor Show in October 1963 and available as either a saloon or estate from 1964 until 1970...

 gearbox ratios were used. These lowered 1st and reverse about halfway between the Cortina GT ratios and the ultra close-ratio box. All these changes made the cars less specialised but far more reliable and all the special parts were still available for competition as well as to members of the public.

The Lotus Cortina had by this time earned an awesome competition reputation. It was also being made in left hand drive when production finished around late 1966 and the Mk2 took over.

Mk2

Ford wanted to change a few things for the Mk2, the Mk1 had done all and more than they could expect in competition, but the public linked its competition wins with Lotus and its bad points with Ford. Ford still wanted to build a Mk2 Lotus and compete with it, but Lotus were moving from Cheshunt to Hethel so it was a bad time for them to build another model. Ford were also concerned with the unreliability of the Lotus built cars. So a decision was made at Ford that to continue with its competition drive and make the car more cost effective they would make the car at Dagenham themselves, alongside the other Cortinas. So the Mk2 had to be much easier to build than the Mk1 so that it could be made alongside Mk2 GT production, just with a different engine and suspension. The Mk2 took a while to appear, first appearing in 1967. The main difference was the choice of colours and the lack of a stripe, although most had them fitted at Ford dealers at extra cost. The only cosmetic changes made were a black front grille, 5.5J x 13 steel wheels and Lotus badges on rear wings and by the rear number plate. The badge on the front grille was an option at first. Unlike the Mk1, the Mk2 was also made in left hand drive from the start of production. The Mk2 Lotus Cortinas also gained an improved and more powerful (109 bhp) engine, which was formerly supplied as the special equipment engine option on Lotus Elan and the Lotus Cortina Mk1. The gearbox ratios remained 2000E ones but the car now used the Mk2 GT remote-control gearchange. The car also had a different final drive of 3.77:1 rather than 3.9:1. The Mk2 was a wider car than the Mk1, so although they looked the same, the steel wheels had a different offset so as not to upset the tracking, and radial tyres were now standard. Another attraction was the larger fuel tank. The spare wheel could now be mounted in its wheel well, but the battery remained in the boot to aid weight distribution.

The only real difference to the engine bay was the air cleaner mounted on top of the engine. The interior was almost identical to a GT. The Mk2 did exactly what Ford wanted, it was far more reliable whilst still quick enough to be used in competition, until it was replaced by the Escort Twin Cam. The car did receive a few updates, but none as urgent as the Mk1's. Only a few months after production started, the Lotus badge on the rear panel was cancelled and a new TWIN-CAM badge was fitted under the Cortina script on the boot lid. The new combined clock and centre console was fitted. In late 1968 the entire Mk2 range received some cosmetic changes; for the Lotus, this meant that the 4 dials on top of the dash were brought down and made part of the dash. An internal bonnet release and a more conventional mounting for the handbrake were also phased in. A new single-rail gearshift mechanism was used. The car stayed in production until 1970.

Racing

To homologate the car for Group 2, 1000 were required to be built in 1963, and the car was duly homologated in September 1963. In the same month, in the car's first outing, in the Oulton Park Gold Cup, the car finished 3rd and 4th behind two Ford Galaxie
Ford Galaxie
The Ford Galaxie was a full-size car built in the United States by the Ford Motor Company for model years 1959 through 1974. The name was used for the top models in Ford’s full-size range from 1959 until 1961, in a marketing attempt to appeal to the excitement surrounding the Space Race...

s, but beat the 3.8 litre Jaguars which had been dominant in saloon car racing for so long. Soon Ford were running cars in Britain, Europe, and the USA, with Team Lotus running cars in Britain for Ford, and Alan Mann Racing
Alan Mann Racing
Alan Mann Racing was a British motor racing team. It was organized by Alan Mann, born in 1936, who was a part-time racing driver and team manager. The team ran a substantial part of the Ford works racing effort in Europe from 1964 to 1969, when it closed its doors...

 running cars in Europe, also on behalf of Ford. Lotus-Cortinas were able to beat almost anything except the 7 litre V8 Ford Galaxies, and later, Ford Mustang
Ford Mustang
The Ford Mustang is an automobile manufactured by the Ford Motor Company. It was initially based on the second generation North American Ford Falcon, a compact car. Introduced early on April 17, 1964, as a "1964½" model, the 1965 Mustang was the automaker's most successful launch since the Model A...

s.

In 1964, a Lotus-Cortina leading around a bend with its inside front wheel in fresh air became a familiar sight, as the cars were set up with soft rear suspension and a hard front end. Jim Clark won the British Saloon Car Championship easily, in the USA, Jackie Stewart and Mike Beckwith won the Malboro 12-hour, and Alan Mann Racing
Alan Mann Racing
Alan Mann Racing was a British motor racing team. It was organized by Alan Mann, born in 1936, who was a part-time racing driver and team manager. The team ran a substantial part of the Ford works racing effort in Europe from 1964 to 1969, when it closed its doors...

 also performed well in the European Touring Car Championship
European Touring Car Championship
The European Touring Car Championship was an international touring car racing series organised by the FIA. It had two incarnations, the first one between 1963 and 1988, and the second between 2000 and 2004...

, including a 1-2 victory in the 'Motor' Six Hour International Touring Car Race at Brands Hatch
Brands Hatch
Brands Hatch is a motor racing circuit near West Kingsdown in Kent, England. First used as a dirt track motorcycle circuit on farmland, it hosted 12 runnings of the British Grand Prix between 1964 and 1986 and currently holds many British and international racing events...

. A Boreham-built car also won its class, came 4th outright, and won the handicap section, in the 4000 mile 10-day Tour de France. Other Lotus-Cortina achievements included the Austrian Saloon Car Championship, the South African National Saloon Championship, the Swedish Ice Championship, and the Wills Six-Hour in New Zealand.

1965 saw the Lotus-Cortina winning regularly, the car being more competitive due to the increased reliability of the new leaf spring rear end. Sir John Whitmore dominated and won the European Touring Car Championship, Jack Sears won his class in the British Saloon Car Championship (a Mustang won outright), Jackie Ickx won the Belgian Saloon Car Championship, and a Lotus-Cortina won the New Zealand Gold Star Saloon Car Championship. Other wins were the Nürburgring Six-Hour race, the Swedish National Track Championship, and the Snetterton 500.

In 1966, Team Lotus registered new cars for the British Saloon Car Championship, which was now open to Group 5 Special Touring Cars, as regulations had been changed. Fuel-injection and dry sumping were allowed, and with Lucas injection and tuning by BRM, the engines could produce 180 bhp at 7750 rpm, increasing their ability to stay with the Mustangs. The cars also had the McPherson struts replaced with coil-springs and shock absorbers and a revised wishbone geometry. They scored 8 class wins, many driven by Jim Clark. In the European Touring Car Championship, Sir John Whitmore pulled off another 4 wins, but that wasn't enough to give him the title, as Alfa Romeo
Alfa Romeo
Alfa Romeo Automobiles S.p.A. is an Italian manufacturer of cars. Founded as A.L.F.A. on June 24, 1910, in Milan, the company has been involved in car racing since 1911, and has a reputation for building expensive sports cars...

 had been doing their homework with the Giulia GTA
Alfa Romeo GTA
The GTA 1300 Junior had a 1300 cc engine that was based on the 1600 engine but with a short stroke crankshaft. The GTA Junior in stradale form did not have many of the light weight features of the 1600 GTA, such as the plastic windows, magnesium engine components and alloy wheels. At start...

s.

Lotus Cortina MK 1's are a consistent class winner in modern Historic Touring Car racing throughout the world. The fastest official recorded speed is 147 mi/h at Mount Panorama Bathurst in Australia by Marc Ducquet.

Rallying

Whilst the Lotus-Cortina is somewhat overshadowed by the success of the Ford Escort in rallying, it performed admirably in the mid-1960s, which might be surprising, given its reputation for unreliability. The first Lotus-Cortina to be rallied was a Lotus-Cortina, a GT with the Lotus engine, in the 1963 Spa-Sofia-Liege rally in September, just to try out the engine, and driven by Henry Taylor to 4th place. The first outing in a rally by a Lotus-Cortina proper was in the 1963 RAC Rally, campaigned again by Taylor, with co-driver Brian Melia. It finished 6th somehow, in spite of its A-bracket rear end needing constant attention. The A-bracket was persevered with by Vic Elford
Vic Elford
Victor Henry Elford is a former sportscar racing, rallying and Formula One driver from England. He participated in 13 World Championship F1 Grands Prix, debuting on 7 July 1968...

 and David Seigle-Morris for the 1964 Tour de France Automobile
Tour de France Automobile
Tour de France Automobile was a sports car race held on roads around France, first held in 1899 at speeds of 30 mph . The first event was won by René de Knyff driving a Panhard et Levassor...

, a 10 day, 4000 miles (6,437.4 km) event, as it was run completely on sealed roads, unlike the rough RAC Rally. Their car came 4th outright in the Touring Car category, and first in the Handicap category, in a mix of one-hour sprints, hillclimbs
Hillclimbing
Hillclimbing is a branch of motorsport in which drivers compete against the clock to complete an uphill course....

, and mountain road rallying.

Still, the general dodginess of the A-bracket suspension meant that Ford decided to replace it with the more conventional GT rear suspension. This became available in June 1965, and while the car still seemed to be afflicted with bad luck, a few victories were racked up. Four of the newly updated cars competed in the Alpine rally of July 1965, and Vic Elford's car led outright, all the way. Well, until less than an hour from finishing, when a piece of the distributor fell out and delayed the car 26 minutes. All four cars retired from that year's RAC rally, which was severely snow-affected. The first works victory came in December 1965, when Roger Clark
Roger Clark
Roger Albert Clark, MBE, was a British rally driver during the 1960s and '70s, and the first competitor from his country to win a World Rally Championship event when he triumphed at the 1976 RAC Rally.-Biography:...

 and Graham Robson won the Welsh International.

In 1966, Ford managed to homologate the car for Group 1, which requires 5000 cars to be built. In the Monte Carlo Rally
Monte Carlo Rally
The Monte Carlo Rally or Rally Monte Carlo is a rallying event organised each year by the Automobile Club de Monaco which also organises the Formula One Monaco Grand Prix and the Rallye Monte-Carlo Historique. The rally takes place along the French Riviera in the Principality of Monaco and...

, Roger Clark finished 4th, only to be disqualified, and then Elford finished 1st in the Rallye Sanremo
Rallye Sanremo
Rallye Sanremo is a rally competition held in Sanremo, Italy. Except for the 1995 event, the event was part of the FIA World Rally Championship schedule from the 1973 season to the 2003 season. Currently, it is a round of the Intercontinental Rally Challenge and the Italian national rally...

 (Rally of the Flowers), only to be disqualified as well. Elford came 2nd in the Tulip Rally
Tulip Rally
The Tulip Rally , first held in 1949, is the oldest Dutch rally competition.The teams are divided into three classes: Tour, Sport and Expert. The Expert Class is for the navigators which in the past 2–6 years in the Top-20 of the Sport class have ended, or the previous years in the Top-20 of the...

. Bengt Söderström was named victor of the Acropolis Rally, after the 1st-placed Mini Cooper S was disqualified. New cars were used for the Coupe des Alpes (Alpine Rally), where Elford's engine blew up after leading, while Roger Clark finished second. Clark was always competitive, but suffered with unreliable cars, coming 3rd in the Canadian Shell 4000, 2nd in Greece, and 4th in Poland. The Lotus-Cortina finally proved itself with an outright win in the RAC rally. F1 World Champion Jim Clark crashed his (twice), but Söderström saw his through to a 13 minute victory, with Gunnar Palm. Other victories in 1966 were in the Geneva rally by Staepelaere, and by Canadian Paul MacLellan in the Shell 4000. A final win before the advent of the Mk. II was also pulled off by Soderstrom in the snowy Swedish Rally
Swedish Rally
The Uddeholm Swedish Rally , formerly the Swedish Rally, is an automobile rally competition held in Värmland, Sweden in early February. First held in 1950, when it was called the Rally to the Midnight Sun with start and finish at separate locations, seventeen years later both start and finish...

of February 1967.

External links

The source of this article is wikipedia, the free encyclopedia.  The text of this article is licensed under the GFDL.
 
x
OK