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Showing posts with label 1971. Show all posts
Showing posts with label 1971. Show all posts

Jaguar E-Type, 1971

Saturday, May 21, 2011

Jaguar E-Type, 1971

 

Jaguar E-Type, 1971
Jaguar E-Type was produced from 1961 to 1974, during that time over 70,000 units were sold. It is widely regarded one of the most beautiful car designs of all time.

Citroen SM Automat, 1971

Saturday, March 5, 2011

Citroen SM Automat, 1971



The Citroën SM was a high performance coupé produced by the French manufacturer Citroën between 1970 and 1975. The SM placed third in the 1971 European Car of the Year contest, trailing its stablemate Citroën GS, and won the 1972 Motor Trend Car of the Year award in the US in 1972.

In 1961, Citroën began work on 'Project S' - a sports variant of the revolutionary Citroën DS. As was customary for the firm, many running concept vehicles were developed, increasingly complex and upmarket from the DS - eventually becoming a halo vehicle for the brand. Citroën purchased Maserati in 1968 with the intention of harnessing Maserati's high performance engine technology to produce a true Gran Turismo car, combining the sophisticated Citroën suspension with a Maserati V6 engine.

The result was the Citroën SM (Sport Maserati), first shown at the Geneva Motor Show in March1970. It finally went on sale in France in September of that year. All produced were left-hand-drive, although some RHD conversions were done in the UK.

The SM was Citroën's flagship vehicle, competing with other high performance GTs of the time from manufacturers such as Jaguar, Lotus and Porsche. It was also Citroën's way of demonstrating just how much power and performance could be accommodated in a front-wheel drive design.

The SM innovated a new type of variable assist power steering that has since spread throughout the vehicle population. It allowed great assistance to the motorist while parking, but little assistance at motorway speeds. The steering actually had the same "assist" at all speeds - the steering was hydraulically locked against steering movement of the wheels from the road ("feedback") up to the capacity of the unit. Hitting a chuckhole at high speed would not turn the steering wheel in the driver's hands! The hydraulic pressure to the power centering unit increased with speed, giving the impression of less and less power "assist." Enough pressure was admitted to the centering unit to return the wheels to the straight ahead position when the car was not moving. The centering pressure was regulated by a flyweight centrifugal governor driven by the pinion (secondary) shaft of the manual gearbox and by a proportioning valve connected to the pressure in the automatic gearbox, which pressure was proportional to the speed of the output shaft.

Contemporary automotive journalists were most effusive about the SM's dynamic qualities, which were unlike anything they had experienced prior. The SM provided a combination of comfort, sharp handling, and high performance not available in any other car at the time. Popular Science noted that the SM had the shortest stopping distance of any car they had tested. To this day this stopping distance remains outstanding.

Unfortunately, the SM did not find a sufficient customer base in the European GT market, but much of the SM's technology was carried forward to the successful Citroën CX, launched in 1974 - the DIRAVI steering being the most obvious example. The same basic engine in enlarged 3.0 L form (some in Italy had 2 litre) was used in Maserati's own Merak which, together with the Khamsin, used Citroën's high pressure hydraulics.

Styling
The look of the car was quite distinct. Designed in-house by Citroën's chief designer Robert Opron, the SM bore a vague family resemblance to the DS. Seen from above, the SM resembled a teardrop, with a much wider track at the front.

The SM was unusually aerodynamic for its era, with a very low drag coefficient. European critics marvelled at the resulting ability to travel for hours at 200 km/h (120 mph) in comfort. In addition, many of the details reflected Robert Opron's American background, notably the truncated 'fins' at the rear.

The SM combined many unusual features - lights that swivelled with the steering (except in the USA where such was illegal), unique self-centering and fully powered steering, self-leveling headlights (except in the USA where such was illegal), a wiper mechanism that was 'sensitive' to rain, and many other features that are now commonplace on the cars of today.

The SM's design was timeless; the car was even used in a 1999 television advertisement for British Petroleum of Spain, where 'a futuristic car was required'. It placed eleventh on Automobile Magazine's 2005 "100 Coolest Cars" listing.
In 1970, it was a car of the future and the fastest front-wheel drive car to be made. It was an example of the car as a symbol of optimism and progressive technology, similar to the SM's contemporary, the Concorde aircraft.

US exports
The main export market for the SM was the United States. In the US, the market for personal luxury cars was much larger than in Europe, with competitors like the Cadillac Eldorado, Lincoln Mark IV and Ford Thunderbird alongside a large selection of Italian, English, and German imports. Nevertheless, the unique design of the SM made quite a splash and won the Motor Trend magazine Car of the Year award in 1972: unheard of for a non-US vehicle at the time.

The SM's six headlight set up was illegal in the United States and consequently, US specification cars were fitted with four fixed round exposed lamps.

Despite initial success, US sales ceased suddenly - Citroën expected (but did not receive) an exemption for the 1974 model year 5 mph bumper regulation imposed by the NHTSA. The integral variable height suspension of the SM made compliance impossible. The law as written called for bumpers to be an exact height off the ground at all times, yet according to the laws of physics, cars dip at the nose on braking. Vehicles classified as trucks were always exempt and the entire law was eventually repealed in 1981. The final batch of 134 now illegal 1974 US model SMs were shipped to Japan.

Engines
The SM was sold with three very similar, small, lightweight engines, all derived from the contemporary Maserati V8 fitted to the Quattroporte. Because of the V8 origin, this engine sported an unusual 90 degree angle between cylinder banks - a trait shared with the PRV V6.

The engines - always mounted behind the front axle were:
    * 2.7 L V6 with Weber 42 DCNF carburettors, "C114-1" (170 bhp) (1970-1972)
    * 2.7 L V6 with Bosch D-Jetronic injection, "C114-03" (178 bhp) (1973-1975 - Not available in the US)
    * 3.0 L V6 with Weber 42 DCNF carburettors, "C114-11" (180 bhp) (1973-1975 - US only in 1973, rest of the world, automatic only in 1974 & 1975)

The size of the 2.7 L engine was limited by French puissance fiscale taxation, which effectively banned large displacement vehicles. The engine was also used in the Maserati Merak from 1973 to 1982 and the Ligier JS2 sports car. The final SMs were produced in the Ligier factory in Vichy.

5 speed manual and 3 speed Borg Warner fully automatic transmissions were fitted, but with the rest of the world outside North America only getting the fully automatic in 1974 & 1975.

The C114 is a relatively sturdy unit, provided certain modifications are performed to eliminate weak points leading to catastrophic damage:
    * The sodium filled exhaust valves may break and drop into the cylinder. Solid valves are available.
    * Primary distribution chain may wear out prematurely due to excessive vibration. A curved chain limiter should be fitted, eliminating vibration.
    * Oil pump drive shaft is underdimensioned and may break. Maserati beefed up the shaft in later versions, and this should be retrofitted if not already present.

Citroen DS 21 Berline, 1971

Tuesday, March 1, 2011

Citroen DS 21 Berline, 1971



The Citroën DS (also known as Déesse, or Goddess, after the punning initials in French) was an automobile produced by the French manufacturer Citroën between 1955 and 1975. Citroën sold nearly 1.5 million D-series during its 20 years of production.The DS is well-known for its futuristic, aerodynamic body design, and for its innovative technology (including its hydropneumatic self-leveling suspension system).

The DS advanced the achievable standards in terms of ride quality, roadholding, handling, and braking in an automobile. Automotive journalists of the time often noted that competitors took decades to adapt to the higher standards it set. The smooth, aerodynamic body lines gave the car a futuristic appearance. While it looked very unusual in 1955, public tastes appear to have caught up with the DS in the post-Ford Taurus/Audi 100 era.

Model history
After 18 years of development in secret as the successor to the venerable Traction Avant, the DS 19 was introduced on October 5, 1955 at the Paris Motor Show. The car's appearance and innovative engineering captured the imagination of the public and the automobile industry almost overnight. 743 orders were taken in the first 15 minutes of the show, and orders for the first day totalled 12,000.

Outside of France, the car's radical and cosmopolitan design appealed to non-conformists. A United States advertisement summarised this selling point: "It takes a special person to drive a special car".

Technical innovations

Hydraulic system
The hydraulic system of the DS 19 was a revolution. Previously hydraulics had been restricted to use in brakes and power steering; the DS used them for the suspension, clutch and transmission. The later ID19 had manual steering and a simplified power braking system.

Suspension
At a time when few passenger vehicles had caught up with the four-wheel independent suspension of the Traction Avant, the application of the hydraulic system to the car's suspension system to provide true self-levelling was a stunning move. This application - 'hydropneumatic suspension' - was pioneered the year before on the rear of the top of range Traction Avant 15CV-H.

Each wheel was connected not to a spring, but to a hydraulic suspension unit consisting of:
    * a sphere of about 12 cm in diameter containing pressurised nitrogen
    * a cylinder containing hydraulic fluid screwed to the suspension sphere
    * a piston inside the cylinder connected by levers to the suspension itself
    * a damper valve between the piston and the sphere

A membrane in the sphere prevented the nitrogen from escaping. The motion of the wheels translated to a motion of the piston, which acted on the oil in the nitrogen cushion and provided the spring effect. The damper valve took place of the shock absorber in conventional suspensions.

The hydraulic cylinder was fed with hydraulic fluid from the main pressure reservoir via a height corrector, a valve controlled by the mid-position of the anti-roll bar connected to the axle. If the suspension was too low, the height corrector introduced high-pressure fluid. If it was too high, it released fluid back to the fluid reservoir. In this manner, it maintained a constant height. A control in the cabin allowed the driver to select one of five heights:
    * normal riding height.
    * two slightly higher riding heights, for poor terrain.
    * two extreme positions for changing wheels.

The DS did not have a jack for lifting the car off the ground. Instead, the hydraulic system enabled wheel changes with the aid of a simple adjustable stand.

Source and reserve of pressure
The central part of the hydraulic system was the high pressure reservoir, which maintained a pressure of between 130 and 150 bar in two accumulators. These accumulators were very similar in construction to the suspension spheres. One was dedicated to the brakes, and the other ran the other hydraulic systems. Thus in case of a hydraulic failure (a surprisingly infrequent occurrence), the first indication would be that the steering became heavy, followed by the gearbox not working; only later would the brakes fail.

Hydraulic fluid
The original hydropneumatic system used a vegetable oil (LHV or liquide hydraulique végétale) similar to that used in other cars at the time. Very soon, Citroën changed to using a synthetic fluid (LHS or liquide hydraulique synthétique). Both of these had the disadvantage that they are hygroscopic, as is the case with most brake fluids. Disuse allows water to enter the hydraulic components causing deterioration and expensive maintenance work. The difficulty with hygroscopic hydraulic fluid was exacerbated in the DS/ID due to the extreme rise and fall in the fluid level in the reservoir, which went from nearly full to nearly empty when the suspension "got up" and the 6 accumulators in the system filled with fluid. With every "inhalation" of fresh moisture- (and dust-) laden air, the fluid absorbed more water. In August 1967, Citroën introduced a new mineral oil-based fluid LHM, or liquide hydraulique minérale. This fluid was much less aggressive on the system and it remains in use to the present day.

Briefly illegal in the United States (US federal law requires motor vehicle brake fluid to be red - an exception had to be granted to Citroën), LHM has since been adopted by manufacturers like Rolls-Royce, Jaguar, BMW, and Audi under different labels, like "Total," "Pentosin," and others.

LHM required completely different materials for the seals. Using either fluid in the incorrect system would completely destroy the hydraulic seals very quickly. To help avoid this problem, Citroën added a bright green dye to the LHM fluid and also painted all hydraulic elements bright green. The former LHS parts were painted black.

Gearbox and clutch
The mechanical aspects of the gearbox and clutch were completely conventional and the same elements were used in the ID 19.

The gear change control consisted of:
    * Hydraulic gear selector.
    * Clutch control. This was the most complicated part. The speed of engagement of the clutch was controlled by:
    * A centrifugal regulator, sensing engine rpm and driven off the camshaft by a belt
    * The position of the butterfly valve in the carburettor (i.e. the position of the accelerator)
    * The brake circuit: when the brake was pressed, the engine idle speed dropped to a rpm below the clutch engagement speed, thus preventing friction while stopped in gear at traffic lights. When the brake was released, the idle speed increased to the clutch dragging speed. The car would then "creep" much like automatic transmission cars. This drop in idle throttle position also caused the car to have more engine drag when the brakes were applied even before the car slowed to the idle speed in gear, preventing the engine from "pulling" against the brakes.

Impact on Citroën brand development
The 1955 DS in one stroke cemented the Citroën brand name as an automotive innovator. In fact, the DS caused such a huge sensation that Citroën was fearful future models would not be bold enough. Other than variations on the very basic 2 cylinder economy car Citroën 2CV, like the Citroën Ami, no new models were introduced from 1955 to 1970.

The DS was a large, expensive executive car and a downward brand extension was attempted, but without result. Throughout the late 1950s and 1960s Citroën developed many new vehicles for the very large market segments between the 2CV and the DS, occupied by vehicles like the Peugeot 403, Renault 16 and Ford Cortina. None made it to production. Either they had uneconomic build costs, or were ordinary "me too" cars, not up to the company's high standard of innovation. Because Citroën was owned by Michelin as a sort of research laboratory, such experimentation was possible. Citroën finally did introduce the clever Citroën GS in 1970, which sold a spectacular 2.5 million units.

DS in the US
While the DS was a hit in Europe, it seemed rather odd in the United States. Ostensibly a luxurious car, it did not have the basic features that buyers of that era expected to find on such a vehicle - fully automatic transmission, air conditioning, power windows and a reasonably powerful engine. The DS price point was similar to the contemporary Cadillac luxury car. Also, people at the time wanted only the newest models, which changed every year, like fashion, yet the DS appeared vaguely derivative of the 1950 Hudson Hornet step-down design.

Outdated US legislation also banned one of the car's more advanced features, aerodynamic headlamps, now common in US automobiles. Ultimately, 38,000 units were sold. The first year of the aerodynamic glass over the DS' headlights along with driving lights turned by the steering, was also the first year these features were outlawed in the US.

Honda AZ-600, 1971

Saturday, February 26, 2011

Honda AZ-600, 1971


Honda AZ-600, 1971

Jaguar E-Type, 1971

Tuesday, February 8, 2011

Jaguar E-Type, 1971



 

 

Jaguar E-Type was produced from 1961 to 1974, during that time over 70,000 units were sold.
It is widely regarded one of the most beautiful car designs of all time.

Dodge Charger RT, 1971

Wednesday, February 2, 2011

Dodge Charger RT, 1971



In 1971, the all-new third generation Charger debuted. It was completely restyled with a new "Pontiac" grille and more rounded "fuselage" bodystyle. Many people have compared the look of the 1971-1974 Chargers to the 1968-1970 Pontiac GTOs. The interiors now looked more like those of the E-body and were now shared by the Plymouth B-body. A rear spoiler and a "Ramcharger" hood made the option lists for the first time. A special scoop was mounted in the hood, directly above the air cleaner. If the driver wanted to put clean air directly into the carburetor, he pulled a small lever under the dash and the scoop popped up. This gimmicky (but novel) device had been used on the Coronet R/T and Super Bees, but this was the first time it was used on the Charger.

Dodge merged its Coronet and Charger lines. From 1971, all four-door B-bodies were badged as Coronets and all two-door B-bodies as Chargers. This change would add the one-year-only Charger Super Bee to the Charger stable.

The Dodge Super Bee made the move from the Coronet line to the Charger line for 1971 only, then the model was discontinued. Several other models were carried over from 1970, including the 500. However this 500 could be ordered with any engine and was not the high performance model it was in 1969. The R/T and SE versions carried over as well, but the R/T's popularity was on the downslide thanks to higher insurance costs. Only 63 Hemi versions were built, and 2,659 were built with other engines that year.

Rapidly rising insurance rates, combined with higher gasoline prices, reduced sales of muscle cars and 1971 was the last year of availability for the 426 Hemi "Elephant engine" in any car. 1972 also saw the end of the high-performance 440 Six-Pack engine (although a very small number of 1972 Chargers came with this engine). The 1972 Charger bowed with a new "Rallye" option to replace the former R/T version. The 440 engines were still available, but now had to use the net horsepower rating instead of the gross horsepower rating. This would cause their horsepower ratings to go down substantially, although the net horsepower rating was actually more realistic. Also beginning in 1972 (with the exception of the very few 440 Six-Pack engines installed in Chargers early in the model year), all engines featured lowered compression ratios to permit the use of regular leaded or unleaded gasoline rather than leaded premium fuel as in past years due to increasing tighter emissions regulations.

The dozen or so 1972 models were built with the 440 Six-Pack engine, a low-compression 440 with a 4 barrel carburetor became the top dog engine, and the use of the pistol-grip 4-speed Hurst shifter was limited to engines of 400 cubic inches. The 1972-1974 Chargers were no longer called performance cars, but were gradually turned into personal luxury cars, because all manufacturers "saw the handwriting on the wall." The end of the muscle car era came to a close, and the 1975 Dodge Charger would be the final nail in the coffin.

Honda AZ600, 1971

Monday, January 24, 2011

Honda AZ600, 1971



Honda AZ600, 1971

Honda AZ600, 1971

Thursday, December 23, 2010

Honda AZ600, 1971



Honda AZ600, 1971

Oldsmobile 442, 1971

Tuesday, November 9, 2010

Oldsmobile 442, 1971



The Oldsmobile 442 was a muscle car produced by the Oldsmobile division of General Motors. It was introduced as an option package for F-85 and Cutlass models sold in the United States beginning with the 1964 model year. It became a model in its own right from 1968 to 1971, then reverted to an option through the mid-1970s. Oldsmobile revived the name in the 1980s on the rear-wheel drive Cutlass Supreme and early 1990s as an option package for the new front-wheel drive Cutlass.

1968
The 442 became a separate model from 1968 through 1971. The wheelbase was 112 in, and over 33,000 were sold for 1968. Despite the engine displacement staying at 400 in³, the stroke was increased and the bore decreased to increase torque and improve emissions. However, its long stroke affected performance and they were deemed not as fast as the '67s. The base motor was still rated at 350 hp, but only with the standard 3-speed and optional 4-speed; automatics were rated at 325 hp. W-30s were rated again at 360 hp. All standard 1968 442 engines are painted a bronze/copper color, as with the 1967's, topped with a fire red air cleaner. W-30 option cars were equipped with Ram Air intake hoses leading from a chrome topped dual snorkle black air cleaner to special under bumper air scoops and set off by bright red plastic fender wells. In addition, a Turnpike Cruiser option was made available with a 2bbl. carb; this was previously available on the Cutlass Supreme for 1967.

It was in 1968 that Oldsmobile first partnered with Hurst Performance Research Corporation to create the Hurst/Olds rather than just adding Hurst shifters as with earlier models. The limited regular production run of 515 Hurst/Olds (459 Holiday Coupes/56 Sport Coupes) started out as regular 442s, but were treated to numerous distinct enhancements both cosmetic and mechanical. All cars were painted Peruvian Silver (a Toronado color) with liberal black striping and white pinstipes, exterior and interior H/O badging (unique to '68), and a real walnut wood dash insert. Mechanically, the cars left the factory with 2 drivetrain combinations. Red 455 in³ engines were backed by modified W-30 Turbo 400 automatic transmissions. A/C cars got a W-46 engine with a 3.08:1 rear while non-A/C cars got a W-45 engine with a 3.91:1 rear. While both engines were rated at 390 hp, the W-45 engine received the cylinder heads from the W-30 and the camshaft from the W-31 making it more suitable for higher rpms. All cars came with bucket seats and a Hurst Dual-Gate shifter in a mini-console. Also standard were numerous regular 442 options like disc brakes, heavy duty cooling, and FE2 suspension. They shared the red fender wells and ram air setup with the W-30. Popular, but not standard, additional options included the tic-toc-tach and wood-grained steering wheel.

1969
1969 442s were very similar to the 1968. Changes to the engine and drivetrain were minimal, but the Turnpike Cruiser option was deleted. However, another hi-po engine was offered. Called the W-32, it came with the Forced Air Induction plumbing found on the W-30s, but it had a milder cam like the base engine. It was only available with an automatic, and 297 were built, including 25 sport coupes and convertibles each.

1970
1970 saw the introduction of the Olds 455 V8 as the standard 442 engine. Output was 365 hp and 500 ft·lbf, with a 370 hp W30 option available. The 365 and 370 hp (272 and 276 kW) power ratings were conservatively underrated at a lower rpm. Both engines are believed by some to produce 410 to 420 hp (306-313 kW). It was the pace car at the Indianapolis 500 race in 1970, along with the Cutlass Supreme.

In addition to the standard 442 offerings, W-30's received a W-25 fiberglass OAI (Outside Air Induction) hood to replace the bumper scoops that were on the 68 and 69 W-30's, an aluminum intake manifold, special camshaft, cylinder heads, distributor, and carburetor.
Engine output was down for 1971 due to a lower compression ratio, which affected all of GM's engines. The base 455 was rated at 340 hp, with the W-30 achieving a rating of 350 hp. The sport coupe disappeared for the first time since 1964, only to return the following year.

Plymouth Hemi Barracuda, 1971

Wednesday, October 20, 2010

  Plymouth Hemi Barracuda, 1971


As 1970 rolled around, another redesign was in order for the Barracuda. The performance version was badged and advertised as the 'Cuda. This year's new design looked quite a bit different from the previous models. One of the reasons was that it was now built on a new, slightly shorter, wider, and sportier version of Chrysler's existing B platform, the E-body. This new generation eliminated the fastback, but kept the two-door coupe and convertible versions. It also had a Dodge near-twin known as the Challenger; however, not one body panel interchanged between the two cars and the Challenger had a slightly longer wheelbase. Both were aggressively and cleanly styled, although they were clearly influenced by the first-generation Chevrolet Camaro. After the switch to the E platform, which featured a larger engine bay than the previous A-body, Chrysler's famous 426 in³ (7.0 L) Hemi would now be available from the factory in the Barracuda. The HemiCuda had about a factory rating of 6 MPG, and was sold without warranty.


Race car drivers Swede Savage and Dan Gurney drove identical factory-sponsored Barracudas in the 1970 Trans-Am Series, although with no success. With the 440-6 and 426 Hemi, the performance from these production Barracudas ended up being legendary. The 1/4 mile times for these were 13.7 s @ 103 mph and 13.4 s @ 108 mph - both among the fastest times of the day. These engines were very easy to slightly modify and drop into the 12s, but either way - stock or modified - one could virtually have a 5-passenger race car. Barracudas also came with decal sets, hood modifications.

The Barracuda was changed slightly for 1971, with a new grille and taillights. This would be the only year that the Barracuda would have four headlights, and also the only year of the optional fender "gills". The 1971 Barracuda engine options would remain the same as that of the 1970 model, except for the fact that a 4-barrel carbureted 440 engine was not available; all 440-powered Barracudas had a six-barrel carburetor setup instead. The 426 Hemi option would remain, and the Hemi-powered 1971 Barracuda convertible is now considered one of the rarest and most desirable collectible automobiles.

In 1970 and 1971, two options were available that are now highly sought-after by collectors. They are the shaker hood and the Spicer Dana 60 rearend. The shaker hood was available on 340ci Six-Pack, 383ci, 440ci and Six-Pack, and 426ci Hemi-equipped 'Cudas. The heavy Dana 60, with a 9 3/4 inch ring gear and considered nearly indestructible, was standard on manual transmission 440 Six-Pack and 426 Hemi equipped 'Cudas, and was optional on those with the automatic transmission.

After another grille and taillight redesign in 1972, the Barracuda would keep its overall look the same through 1974, with dual headlights and four circular taillights. But like other pony cars of the time, these years showed a major decrease in the Barracuda's power due to stricter emission laws. The largest available engine in 1972 was the 340 4bbl; a 360 was available in 1974. New safety regulations would also force the vehicle to have large front and rear bumper guards in 1973 and 1974. The Barracuda hung on through 1974, after which it was discontinued in the midst of the 1973 oil crisis. Production ended ten years (to the day) after it had begun. Although today they are sought-after collector cars, the third generation was a marketplace failure and never successfully competed with rival offerings from Ford and General Motors. The rarity of specific models and combinations today is primarily the result of low original-buyer interest and production.

Jaguar E-Type

Thursday, April 15, 2010

Jaguar E-Type, 1971






Jaguar E-Type was produced from 1961 to 1974, during that time over 70,000 units were sold. It is widely regarded one of the most beautiful car designs of all time.