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Subaru Impreza WRC
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Subaru Impreza WRC
The Subaru Impreza WRC is a World Rally Car based on the Subaru Impreza road car. It was used by Subaru World Rally Team, Subaru's factory team, and replaced the Subaru Legacy RS in 1993. The car was debuted at 1993 Rally Finland and won a total of six world rally titles, including three consecutive manufacturers' titles and three drivers' titles.
For 1993, Prodrive recognized that a smaller, nimbler car would make a better platform for a rally car, and work on a Group A Impreza rally car began. It was 160 mm shorter in overall length with a 60 mm shorter wheelbase, as well as having a more neutral front/rear weight ratio. It also featured active differentials, a first for a rally car. At the 1000 Lakes Rally, Subaru debuted their new Prodrive developed Impreza derived Group A rally car, driven by Vatanen and Alén. Vatanen drove the car to second place on its debut.
In 1994, the Subaru team switched from Michelin to Pirelli tires.
For the 1995 season, the FIA mandated more restrictive air intakes in an effort to slow the cars down. Subaru countered this by introducing a new boxer engine with revised camshafts and a different compression ratio.
For 1997, the FIA replaced the Group A formula with a new formula called World Rally Car. This gave teams greater latitude in design and materials including vehicle width, suspension geometry, aerodynamics, intercooler capacity and engine modifications. This led to a totally redesigned car, the WRC97, featuring modified camshafts, cylinder ports and combustion chambers. The new body had two doors. The width of the car increased to 1,770 mm (69.9 in) with a revised suspension geometry. Power increased to 224 kW (300 hp) @ 5500 rpm, and torque was now 470 N⋅m (347 lb⋅ft).
The Impreza WRC98 was an evolution of the earlier WRC97, with computer controlled active differentials in the front, rear, and centre, and an electronic throttle. Mechanical failures were common and took the team out of contention for the title.
The WRC99, introduced at the first round of the championship, featured an electronically controlled, hydraulically actuated semi-automatic transmission with a drive-by-wire throttle, allowing the cars to be shifted with steering wheel mounted paddles, similar to F1 cars. This allowed the driver to shift gears faster, and reduced the chance of dog gear wear. Due to technical difficulties, the team struggled until the season's 7th round in Argentina. However, the car helped prove much of the technology seen on later cars. Subaru was the first rally team to implement this technology, which has been used on all WRC cars until it was forbidden by the 2011 championship rules.
Although the WRC2000 looked almost identical to the WRC99, underneath the sheet metal, its execution was radically different. Developed by Prodrive engineer Christian Loriaux, the team used the lessons learned from the WRC99 and applied them in the WRC2000's 10-month development, in which over 80% of the car's mechanical and electronic components were redesigned. The car debuted, and drove to victory, at the fourth event of the season, Rally Portugal.
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Subaru Impreza WRC
The Subaru Impreza WRC is a World Rally Car based on the Subaru Impreza road car. It was used by Subaru World Rally Team, Subaru's factory team, and replaced the Subaru Legacy RS in 1993. The car was debuted at 1993 Rally Finland and won a total of six world rally titles, including three consecutive manufacturers' titles and three drivers' titles.
For 1993, Prodrive recognized that a smaller, nimbler car would make a better platform for a rally car, and work on a Group A Impreza rally car began. It was 160 mm shorter in overall length with a 60 mm shorter wheelbase, as well as having a more neutral front/rear weight ratio. It also featured active differentials, a first for a rally car. At the 1000 Lakes Rally, Subaru debuted their new Prodrive developed Impreza derived Group A rally car, driven by Vatanen and Alén. Vatanen drove the car to second place on its debut.
In 1994, the Subaru team switched from Michelin to Pirelli tires.
For the 1995 season, the FIA mandated more restrictive air intakes in an effort to slow the cars down. Subaru countered this by introducing a new boxer engine with revised camshafts and a different compression ratio.
For 1997, the FIA replaced the Group A formula with a new formula called World Rally Car. This gave teams greater latitude in design and materials including vehicle width, suspension geometry, aerodynamics, intercooler capacity and engine modifications. This led to a totally redesigned car, the WRC97, featuring modified camshafts, cylinder ports and combustion chambers. The new body had two doors. The width of the car increased to 1,770 mm (69.9 in) with a revised suspension geometry. Power increased to 224 kW (300 hp) @ 5500 rpm, and torque was now 470 N⋅m (347 lb⋅ft).
The Impreza WRC98 was an evolution of the earlier WRC97, with computer controlled active differentials in the front, rear, and centre, and an electronic throttle. Mechanical failures were common and took the team out of contention for the title.
The WRC99, introduced at the first round of the championship, featured an electronically controlled, hydraulically actuated semi-automatic transmission with a drive-by-wire throttle, allowing the cars to be shifted with steering wheel mounted paddles, similar to F1 cars. This allowed the driver to shift gears faster, and reduced the chance of dog gear wear. Due to technical difficulties, the team struggled until the season's 7th round in Argentina. However, the car helped prove much of the technology seen on later cars. Subaru was the first rally team to implement this technology, which has been used on all WRC cars until it was forbidden by the 2011 championship rules.
Although the WRC2000 looked almost identical to the WRC99, underneath the sheet metal, its execution was radically different. Developed by Prodrive engineer Christian Loriaux, the team used the lessons learned from the WRC99 and applied them in the WRC2000's 10-month development, in which over 80% of the car's mechanical and electronic components were redesigned. The car debuted, and drove to victory, at the fourth event of the season, Rally Portugal.
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