The 2004 Porsche Boxster is powered by a 2.7-liter, horizontally opposed, six-cylinder liquid-cooled engine that produces 225 horsepower (SAE) at 6,300 rpm and 192 lb.-ft. of torque at 4,750 rpm. Equipped with a standard five-speed manual transmission, the Boxster accelerates from a standing start to 62 mph (100 km/h) in only 6.4 seconds. With the optional Tiptronic® S five-speed automatic transmission, the sprint time is still a very quick 7.3 seconds.
The engine in the 2004 Porsche Boxster also features a “returnless” fuel supply system that reduces hydrocarbon emissions caused when fuel is heated prematurely as it flows back and forth through a traditional delivery system. Porsche engineers developed a new and maintenance-free “returnless” system that incorporates the fuel pump, filter and pressure regulator inside the fuel tank. The result is that only the fuel that is actually needed for optimum combustion is pumped to the engine. Excess fuel does not enter the circuit and is not exposed to premature heating. The system provides a bonus for Porsche buyers because there is no need to replace the fuel filter as part of routine maintenance.
The 2004 Porsche Boxster’s racecar-inspired mid-engine layout concentrates the car’s mass near its center, providing quick response to steering inputs. Four-wheel independent suspension features a Porsche-optimized MacPherson-strut design for rigidity and uses aluminum components for low unsprung weight. Front and rear stabilizer bars and dual-tube gas-charged shock absorbers provide flat cornering. Power rack-and pinion steering yields a quick 2.98 turns lock-to-lock and a tight 35.8-ft. (10.9-meter) turning circle.
A “staggered” wheel/tire array with wider wheels and wider, lower-profile tires on the rear contributes to the sports car’s neutral handling characteristics. The standard aluminum alloy wheels measure 6 x 16 inches in front and mount 205/55 ZR16 tires; the 7 x 16-inch rear wheels mount 225/50 ZR16 tires. Optional 17- and 18-inch wheel/tire packages further enhance the already precise handling by reducing unsprung weight, thus assuring even smoother and more sensitive response from the shocks and springs.
For even crisper handling, a sport suspension package is available with shorter and firmer springs, more responsive shocks and larger anti-roll bars.
Source: Porsche press