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Isuzu Piazza
Isuzu Piazza/Impulse
Manufacturer Isuzu Motors
Also called Holden Piazza
Isuzu Piazza
Isuzu Piazza Nero
Asüna Sunfire
Geo Storm
Production 1981–1992
Class Sport compact
Body style(s) 3-door hatchback
2-door station wagon
Related Geo Storm
Isuzu Gemini
Isuzu Stylus
Geo Spectrum
Designer Giorgetto Giugiaro

The Isuzu Piazza (also known as the Isuzu Impulse in the United States and the Holden Piazza in Australia) is a small sporty 3-door liftback coupé that was manufactured by Isuzu from 1981 to 1992 in two generations. The automotive industry is the industry involved in the design development manufacture marketing and sale of Motor vehicles In 2007 more than 73 million motor vehicles ( is a Japanese car commercial vehicle and heavy truck manufacturing company, headquartered in Tokyo. Car classification is subjective since many vehicles fall into multiple categories or do not fit well into any A sport compact is a high-performance version of a Compact car or a Subcompact car. Cars can come in a large variety of different body styles. Some are still in production while others are of historical interest only Hatchback is a term designating an Automobile design containing a passenger cabin with an integrated Cargo space accessed from behind the vehicle by a single A station wagon (or simply wagon) in American, Australian, Canadian and New Zealand usage and an estate car (or just estate The Geo Storm was a Sport compact Car manufactured by Isuzu and sold in the United States by General Motors from 1990 through 1993 The Isuzu Gemini was a Compact car built in several generations by Isuzu and sold from 1974 to 2000 The Isuzu Gemini was a Compact car built in several generations by Isuzu and sold from 1974 to 2000 The Isuzu Gemini was a Compact car built in several generations by Isuzu and sold from 1974 to 2000 Giorgetto Giugiaro (born August 7, 1938) is an Italian Automobile designer He was born in Garessio, Province of Cuneo The United States of America —commonly referred to as the For a topic outline on this subject see List of basic Australia topics. A liftback is a Car body style in which the cargo space (boot is accessed through a Tailgate that extends up to the higher end of the C-pillar and includes ( is a Japanese car commercial vehicle and heavy truck manufacturing company, headquartered in Tokyo. In Australia it was sold by Holden, the local division of Isuzu's parent company, General Motors (GM). GM Holden Ltd is an Australian automaker based in Port Melbourne Victoria. General Motors Corporation ( GM) ( is a multinational automobile manufacturer founded in 1908 and headquartered in the United States.

The first generation Impulse was a rear-wheel drive car, and in the United Kingdom it was the first widely available Isuzu. The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom, the UK or Britain,is a Sovereign state located

The second generation was available as front-wheel drive or all-wheel drive. Front-wheel drive (or FF layout) is a form of engine / transmission layout used in Motor vehicles where the engine drives the front Wheels Four-wheel drive, 4WD, or 4x4 ("four by four" is a four-wheeled Vehicle with a drivetrain that allows all four Wheels to It was the basis for the Gemini Coupe, or Geo Storm as it was known in the U. The Geo Storm was a Sport compact Car manufactured by Isuzu and sold in the United States by General Motors from 1990 through 1993 S. market.

Contents

1981–1989

In 1978, Isuzu commissioned Giorgetto Giugiaro to design a new sporty car to replace the 117 Coupe (also a Giugiaro design). Giorgetto Giugiaro (born August 7, 1938) is an Italian Automobile designer He was born in Garessio, Province of Cuneo Oh and as you might have noticed the sections [1] They delivered several T Series Geminis to the Italdesign studio in Italy and allowed Giugiaro free rein over the design. Italdesign-Giugiaro SpA (commonly called Italdesign) is an Automobile design and engineering company in Turin, Italy. The result of this effort was the wedge-shaped three-door hatchback called the Asso di Fiori ("Ace of Clubs") prototype and show car, that was shown at the 1979 Tokyo Motor Show to rave reviews. The is a biennial Auto show held in October-November at the Makuhari Messe, Chiba City, Japan for cars motorcycles and commercial vehicles Giugiaro referred to the design as his fifth "Copernican revolution", integrating the design innovations of many different previous designs into one, mass producable, vehicle. [2] Within 48 hours of its unveiling at the Tokyo Motor Show, Isuzu fast tracked the vehicle into production with minimal changes to the design. [3][4]

In late 1981, the first Isuzu Piazzas went on sale in Japan, available with either 120 hp (89 kW), 120 lb·ft (163 N·m) 2. For a topic outline on this subject see List of basic Japan topics. 0 L SOHC I4 engine or a 135 hp (101 kW), 123 lb·ft (167 N·m) 2. Overhead camshaft, commonly abbreviated to OHC, Valvetrain configurations place the engine Camshaft within the Cylinder heads above the The straight-4 or inline-4 engine (often abbreviated I4 or L4) is a four cylinder Internal combustion engine with all four cylinders 0 L DOHC I4 engine. Overhead camshaft, commonly abbreviated to OHC, Valvetrain configurations place the engine Camshaft within the Cylinder heads above the Five-speed manual and 4-speed automatic transmissions were available, and all models were rear-wheel drive. A manual transmission (also known as a stick shift or just 'stick' 'straight drive' or standard transmission) is a type of transmission used in An automatic transmission (commonly "AT" or "Auto" is an Automobile Gearbox that can change Gear ratios automatically as the vehicle For the 1985 model year, a 180 hp (134 kW), 185 lb·ft (251 N·m) turbocharged SOHC I4 engine was introduced, and the DOHC naturally aspirated engine was phased out in years that followed. The straight-4 or inline-4 engine (often abbreviated I4 or L4) is a four cylinder Internal combustion engine with all four cylinders Piazzas were available in a multitude of trim levels including Bella, XN, XJ, XE, XG, Nero, and others. There were three different suspension tuning levels, standard, Irmscher, and Lotus. Irmscher Automobilbau GmbH & Co KG is a German automobile tuning and manufacturing company specialising in Opel Lotus Cars is a British manufacturer of sports and racing cars based at Hethel, Norfolk, England. [5]

For the U. S. market, this vehicle was introduced as the Impulse in 1983. For the 1983 and 1984 model years, only one engine was available, the 2. 0 L SOHC I4 engine, rated at 90 hp (67 kW), 108 lb·ft (146 N·m). A turbocharged model was introduced in 1985, with a 2. A turbocharger, or turbo, is an air Compressor used for forced-induction of an Internal combustion engine. 0 L SOHC I4 engine rated at 140 hp (104 kW) and 166 lb·ft (225 N·m). The 1988 model year saw several changes. Mild exterior and interior changes were made to the appearance of the vehicle (a larger rear spoiler, fixed headlights without pop up covers, etc. ). The 2. 0 L non-turbo engine was replaced with a 2. 3 L SOHC I4 engine, rated at 110 hp (82 kW), 127 ft·lbf (this engine was offered only in the U. S. market). All Impulses received a Lotus-tuned suspension beginning in the 1988 model year, which consisted of redesigned sway bars, stiffer dampers, and a change in previous spring rates. A sway bar (also stabilizer bar anti-sway bar roll bar or anti-roll bar ARB) is an Automobile suspension A shock absorber in common parlance (or damper in technical use is a mechanical device designed to smooth out or dampen shock impulse and dissipate [6]

In the U. S. market, the Impulse was marketed as "everything standard", meaning that all Impulses came with all available equipment for the vehicle's model year, and only two trim levels offered: non-turbo and Turbo. There were, however, some special edition models, most notably the RS model of the 1987 model year, available only in white body color with pewter color trim, and featuring the stiffest suspension available on any Impulse, very close to the Irmscher suspension sold only in Japan. Pewter is a Metal Alloy, traditionally between 85 and 99 percent Tin, with the remainder consisting of Copper and Antimony, acting For the 1989 model year, a "Special Edition" non-turbo model was offered, which was equipped with the Turbo model wheels and interior trim.

The vehicle was sold as the Piazza in Europe and Australia, though introduced into these markets in 1985 or later. In the UK the Piazza was sold in most of the trim levels offered in Japan, in both Turbo and non-turbo forms. In Australia, the Piazza was introduced very late (April 1986), and offered only in Turbo form. [7]

Performance of the Turbo model was comparable to the Mitsubishi Starion or Dodge Conquest, as demonstrated by the fact that the acceleration and handling numbers reported by the auto enthusiast magazines were within 0. The Mitsubishi Starion is a three-door Turbocharged four-cylinder Rear-wheel drive four-seat Sports car that was in production from 1982 The Mitsubishi Starion is a three-door Turbocharged four-cylinder Rear-wheel drive four-seat Sports car that was in production from 1982 1–0. 2 seconds between the vehicles. [8]

In the U. S. , the Impulse was replaced by the second generation Impulse after the end of the 1989 model year. However, in Japan, the first generation Piazza continued production and was available through the 1991 model year.

1990–1992 (1990–1993 in Canada)

Isuzu Impulse 2nd Gen.
Isuzu Impulse 2nd Gen.

The second generation Impulse was designed on General Motors's second generation R-body "world car" platform. GM had commissioned Isuzu to build a replacement for the Spectrum, this time a sportier model called the Storm (Gemini Coupe in Japan). The Isuzu Gemini was a Compact car built in several generations by Isuzu and sold from 1974 to 2000 The Geo Storm was a Sport compact Car manufactured by Isuzu and sold in the United States by General Motors from 1990 through 1993 The Isuzu Gemini was a Compact car built in several generations by Isuzu and sold from 1974 to 2000 The body design of the Storm was strongly influenced by GM and drew heavily from GM Europe's design submission for the Elan M100. General Motors Europe (often abbreviated to GM Europe) is responsible for the operation of General Motors Corporation businesses in Europe. Lotus Elan is the name of two Convertible Cars and one fixed head Coupé produced by Lotus Cars. [9][10] Under Shiro Nakamura,[11] Isuzu's then head of design, the third generation Gemini sedan was first designed on this platform, and then attention was turned to a sporty coupe to replace the first generation Impulse. Starting with the Storm, alternative front and rear treatments were made, retaining the lozenge theme of the Gemini sedan, and drawing heavy influence from the rear-wheel drive Impulse (semi-concealed headlights with integrated grille as well as hood and taillight styling) while also expanding on the "European look", which later became a central point of marketing the vehicle in Japan.

The three-door hatchback debuted as the Impulse XS in 1989 for the 1990 model year. It was offered only in front-wheel drive with a DOHC 1. 6 L (1588 cc) I4 engine which produced 130 hp (97 kW). The suspension consisted of MacPherson struts both front and rear, with a rigid trailing arm front suspension and a multi-link rear suspension, featuring Nishiboric passive steering. The MacPherson strut is a type of car suspension system widely used in modern vehicles named after Earl S Plan view The arms have to control toe /steer and lateral compliance

For the 1991 model year, the Impulse RS was introduced with a 160 hp (119 kW) turbocharged engine and all-wheel drive drivetrain which featured front and rear viscous differentials and center helical differential. The wagonback model was also introduced for the 1991 model year, only available with the normally-aspirated 1. 6 L engine.

For the 1992 model year, the Turbo model was discontinued and the base engine was replaced with a 1. 8 L (1809 cc) engine, sharing the same bore but with a longer stroke due to the taller engine block. This larger powerplant was good for 140 hp (104 kW) and 125 ft·lbf (169 N•m). [12] Both body styles continued into 1992, but very few were produced.

Since the Impulse weighed just 2411 lb (1094 kg) in front-wheel drive configuration and 2732 lb (1239 kg) in all-wheel drive configuration, the turbo engine and all wheel drive combined gave excellent performance.

General Motors, who owned nearly half of Isuzu, also owned Lotus Cars at the time. Lotus selected the 1. 6 L engine and transmission from the Isuzu Gemini for the Lotus Elan and a following generation of that engine eventually ended up in the Impulse. Lotus Elan is the name of two Convertible Cars and one fixed head Coupé produced by Lotus Cars. Lotus was subcontracted by Isuzu to fine tune the suspension of the Impulse, through selection of stiffer dampers, larger sway bars, and softer springs. All of the second generation Impulses had the Lotus-tuned suspension.

A non-Lotus innovation in the Impulse was the development of the Nishiboric passive rear-wheel steering system which adjusted the toe of the rear wheels by changing the rear wheel alignment through the range of suspension travel.

The combination of the burst of the Japanese economic bubble, rising emissions and crash safety requirements, and continued restrictive market segment meddling by General Motors forced Isuzu out of the car making market and brought an end to the Impulse. Japanese post-war economic miracle The was an Economic bubble in Japan from 1986 to 1990 in which Real estate and Stock prices greatly inflated Automobile emissions control covers all the technologies that are employed to reduce the Air pollution -causing emissions produced by Automobiles Exhaust emissions

In the Japanese market, this vehicle was sold as the Piazza beginning in July 1991 through to spring of 1992. The second generation Piazza was offered only in front-wheel drive with the 1. 8 L engine. All of the second generation Piazzas came with the Lotus-tuned suspension, which was stiffer.

In the Canadian market, the same models, with minor variations, were sold in the 1990 and 1991 model years. No Impulses were made for Canada for the 1992 model year. In 1993 the 1. 8 L model was sold in Canada as the Asüna Sunfire, but only with the hatchback body. Asüna was a Captive import automobile brand created in 1992 for the Canadian market by General Motors as a counterpart to Geo. Hatchback is a term designating an Automobile design containing a passenger cabin with an integrated Cargo space accessed from behind the vehicle by a single [12]

References

  1. ^ Alfieri, Bruno (ed. ) (1987). Giugiaro Italdesign Catalogue Raisonné 1959–1987, Vol. 2. Milano, Italy: Automobilia International Publishing Group, pp. 108–109.   Accessed 2007-02-13. Year 2007 ( MMVII) was a Common year starting on Monday of the Gregorian calendar in the 21st century. Events 1258 - Baghdad falls to the Mongols, and the Abbasid Caliphate is destroyed
  2. ^ Alfieri, Giugiaro Italdesign Catalogue Raisonné 1959–1987, Vol. 2, pp. 191–194. Accessed 2007-02-13. Year 2007 ( MMVII) was a Common year starting on Monday of the Gregorian calendar in the 21st century. Events 1258 - Baghdad falls to the Mongols, and the Abbasid Caliphate is destroyed
  3. ^ Alfieri, Giugiaro Italdesign Catalogue Raisonné 1959–1987, Vol. 2, p. 216. Accessed 2007-02-13. Year 2007 ( MMVII) was a Common year starting on Monday of the Gregorian calendar in the 21st century. Events 1258 - Baghdad falls to the Mongols, and the Abbasid Caliphate is destroyed
  4. ^ "Isuzu Piazza". Car Styling Quarterly. Vol. 35. July 1981.
  5. ^ Isuzu Piazza, 117 Coupe, and Bellett GT. Tokyo, Japan: Neko Publishing Co. Ltd. , 1998. ISBN 4-87366-026-2.
  6. ^ Impulse JR Specifications. Retrieved on 2007-02-13. Year 2007 ( MMVII) was a Common year starting on Monday of the Gregorian calendar in the 21st century. Events 1258 - Baghdad falls to the Mongols, and the Abbasid Caliphate is destroyed
  7. ^ Bebbington, Terry, and Michel A. Malik. 45 Years of Holden. The Australian Publishing and Printing Co. Distributed by Classic Motorbooks. ISBN 0-947216-31-6.
  8. ^ Performance Comparison; 1985–1989 Impulse/Piazza JR Turbo Versus The Competition. Retrieved on 2007-02-13. Year 2007 ( MMVII) was a Common year starting on Monday of the Gregorian calendar in the 21st century. Events 1258 - Baghdad falls to the Mongols, and the Abbasid Caliphate is destroyed
  9. ^ Robinson, Graham. Lotus Since the 70's; Volume 1: Elite, Eclat, Excel, and Elan. Croydon, England: Motor Racing Publications Ltd. , 1993. ISBN 0-947981-70-5.
  10. ^ Hughes, Mark. Osprey Automotive Lotus Elan. London: Osprey Publishing, 1992. ISBN 1-85532-194-7.
  11. ^ Gandini, Marzia. Bruno Alfieri, Editor. Shiro Nakamura, Nissan Design (Car Men 45). Automobilia s. r. l. Italy, 2003. ISBN 88-7960-152-0.
  12. ^ a b Impulse JI and Asuna Sunfire Specifications. Retrieved on 2007-02-13. Year 2007 ( MMVII) was a Common year starting on Monday of the Gregorian calendar in the 21st century. Events 1258 - Baghdad falls to the Mongols, and the Abbasid Caliphate is destroyed

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