Isuzu Gemini - 1985

1985

Second generation
Also called Isuzu I-Mark
Chevrolet Spectrum
Geo Spectrum
Pontiac Sunburst
Chevrolet Gemini
Holden Gemini
Production 1985–1990
Predecessor Chevrolet Chevette (Spectrum)
Opel Isuzu (I-Mark)
Pontiac Acadian (Sunburst)
Successor Isuzu Stylus (I-Mark)
Pontiac LeMans (Sunburst)
Geo Storm (Spectrum)
Class Subcompact
Body style 3-door hatchback
4-door sedan
Layout FF layout
Platform R-body
Engine 1.3 L 4XB1 I4 (JT140, export only)
1.5 L 4XC1 I4 (JT150)
1.5 L 4XC1-T turbo I4 (JT150)
1.6 L 4XE1 DOHC I4 (JT190)
1.5 L 4EC1 diesel/TD I4 (JT600)
Transmission 3-speed automatic
5-speed manual
Wheelbase 94.5 in (2,400 mm)
Length I-Mark Hatchback: 157.9 in (4,011 mm)
I-Mark Sedan: 160.7 in (4,082 mm)
Spectrum Hatchback: 157.4 in (3,998 mm)
Spectrum Sedan: 160.2 in (4,069 mm)
Width I-Mark: 63.5 in (1,613 mm)
Spectrum: 63.6 in (1,615 mm)
Height I-Mark: 54.1 in (1,374 mm)
Spectrum: 52.0 in (1,321 mm)
Designer(s) Giorgetto Giugiaro

General Motors sought a replacement for their world car T-body Kadett / Gemini, and this time, instead of building one design on several continents, they decided to build a world car in one location and export it to several continents. As a considerable portion of the T-body manufacturing had been turned over to Isuzu in Japan for economic reasons, so would the manufacturing of the replacement. In 1984, Isuzu again commissioned Giorgetto Giugiaro who was responsible for the 117 Coupé and the Piazza. This time, he was to design an economy car on the new front-wheel drive R-body platform. The R-body featured a MacPherson strut front suspension and beam axle rear suspension, which foreshadowed most of GM's offerings through their current model lineup. Giugiaro's design followed the Piazza design very closely in shape and detail, though the proportions made the Gemini appear shorter and taller in its three-door version, and a four-door sedan (notch back) was also designed.

Unfortunately for everyone involved, Isuzu presented the designs to GM prior to freezing them, and GM ordered a number of detail changes to them without ever consulting the designer, Giugiaro, which was taken as an insult, and ended the long relationship between the noted Italian designer and Japan's oldest car builder. The insult was serious enough to Giugiaro that he denied the design was his until a decade after the vehicle went out of production.

The R-body Gemini was introduced in May 1985 as the 'Gemini FF, with an all-new line of engines. In Japan, originally with chassis code JT150, it was available with a carburetted 1.5-liter SOHC engine. An also newly developed 1.5-liter inline four diesel engine (JT600) was added to the lineup in November. At the other end of the lineup, a 120 PS (88 kW) fuel-injected and turbocharged version of the 1.5-liter 4XB1 engine ("Irmscher") was added in May 1986. The FF Gemini underwent a facelift in February 1987, receiving a more aggressive front styling with wraparound headlight as well as other minor changes. At the same time the "FF" moniker was dropped, as parallel production of the preceding RWD Gemini came to an end. In March 1987 the Gemini saw its European premier, at the Geneva Salon. European sales of the already somewhat dated Gemini were disappointing, and Isuzu soon withdrew from the European passenger car market entirely.

A 1.6-liter DOHC engine with 135 PS (99 kW) was introduced in February 1988. Export versions were also available with a smaller 1.3-liter four to suit taxation systems based on displacement. This offered 72 PS (53 kW), while export specification 1.5s had 76 PS (56 kW) on tap and the naturally aspirated diesel offered 52 PS (38 kW) outside of Japan. Trim levels were widely varied, from basic models ("C/C" in Japan, "LT" in general export markets, and "S" in the US) to Irmscher, ZZ, and Lotus Tuned versions, and plenty of optional equipment and dealer options were available.

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