The Porsche Cayenne

The Porsche Cayenne is a mid-size luxury SUV produced by the German automaker Porsche since 2002, and North American sales began in 2003. It is the first V8 engined vehicle built by Porsche since 1995, when the Porsche 928 was discontinued. Sales of the Cayenne have been strong, with 100,000 sold as of June 2005, becoming Porsche's best-selling vehicle in North America. 40% of Cayenne sales are in North America. Sales slowed by 2006. The Cayenne was skipped for the 2007 model year, but has been redesigned for 2008. The 2008 model with feature a 4.8L V-8 engine with two turbochargers producing 500 hp and 516 lb./ft. of torque reaching an estimated top speed of 171 mph.


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The Porsche Boxster, part 3

The second generation of the Boxster (internally known as the 987) made its debut at the 2004 Paris Motor Show alongside the new 911 (997). The car became available for model year 2005.

In appearance the car remains very similar to the previous generation. The most obvious styling change is to the headlights, which now have a profile similar to those of the Carrera GT, Porsche's mid-engined supercar. The intake vents on the sides of the Boxster are now larger, with more pronounced horizontal slats and are coloured metallic silver, irrespective of the paint colour on the rest of the car. The wheel arches have been enlarged to allow wheels up to 19 inches in diameter, a first for the Boxster series. The most significant updates from the 986 series are in the interior, with a more prominent circular theme evident in the instrument cluster and cooling vents. Porsche claims that the 987 Boxster shares only 20% of its components with its predecessor, despite their being almost identical from the outside. The base engine is a 2.7 L 176 kW (240 hp) flat-6, with the Boxster S getting a 3.2 L 206 kW (280 hp) engine. The Cayman series is derived from the 987.

For the 2007 model year the base Boxster received a revised engine featuring VarioCam Plus to provide a 5 hp boost (245 hp; the same as the Cayman). The Boxster S engine was upgraded from 3.2L to 3.4L, resulting in the production of 15 more hp (295 hp; the same as the Cayman S). These upgrades made the Boxster series and the Cayman series equivalent in terms of horsepower.


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The Porsche Boxster, part 2

The styling of the Boxster is owed to former "Style Porsche" department head Harm Lagaay. His Boxster design study and the production Boxster stimulated a commercial turnaround for Porsche after several difficult years of falling sales.

The first generation of the Boxster whose visual appearance was heavily inspired by the Porsche Spyder and Speedster as well as the Porsche 550 Spyder. The Boxster was released ahead of the release of its big brother, the 996 model 911. Through consultation with Toyota, Porsche greatly decreased the cost of manufacture, and introduced large scale sharing of components between its models. The 986 Boxster had the same bonnet (hood), front wings (fenders), and distinctive 'fried-egg' headlight units as the 996. Its original 2.5L M96 engine shared its architecture with the 3.4L M96 engine used in the original 996, and was the first application of a completely water-cooled engine in a series production, non-front-engined Porsche. The combination of the new Boxster / 911 styling and the reduced build costs through component sharing are widely believed to have saved Porsche from being acquired by another car company, although it is argued that the strong front-end resemblance between the 911 and the less expensive Boxster may have deterred potential buyers of the 996.

The M96 is used in all 986/987 Boxsters, and most of the 996/997 range (except the GT3/GT2 and Turbo, which are based on the GT1 racing engine). The M96 is a horizontally opposed ("flat") six-cylinder layout. This layout is one of only four common engine layouts that have a natural engine balance, the others being the straight six (as used in many of BMW's engines); the flat 12; and the V12. This gives the engine a characteristic smoothness throughout the rev range. The flat six is also an inherently low engine. Its placement immediately ahead of the rear axle offers the Boxster excellent balance, a low center of gravity, and renowned neutral handling characteristics. Early production M96 engines had a small but significant number of engine failures due to cracked cylinder liners, but since a minor redesign in 2000 these problems have been resolved.


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