Saleen S7

The Saleen S7 is an American hand-built, high-performance supercar designed and initially built in the UK by Automotive and Motorsport engineering company Ray Mallock Ltd. on behalf of Saleen Inc. Developed jointly by Steve Saleen for the initial concept and direction, Hidden Creek Industries for resources and initial funding, Phil Frank for the body and interior CAD design and development, it was the first fully proprietary car produced by Saleen and became America's first mid-engine production supercar. The S7 debuted on August 19, 2000 at the Monterey Historic Races. The all-aluminum 427 is a bored-and-stroked derivative of Ford's 351 Windsor small block with Cleveland-style canted valve heads, not based on the FE big-block. It proved remarkably tractable and flexible for such a high-output unit—550 hp at 6400 rpm. In 2005, the S7 gained a more powerful twin-turbo powerplant which boosts engine power to 750 hp (559 kW) and the top speed 248 mph (399 km/h).

S7

Exterior

The body of the car, made entirely from carbon fiber, incorporates the use of scoops, spoilers, and other aerodynamic features to create split-channel airflow throughout the car, and at 160 miles per hour (257 km/h), the car creates its own weight in downforce.

Twin-turbo

Twin-turbo or biturbo refers to a turbocharged engine in which two turbochargers compress the intake charge. More specifically called "parallel twin-turbos". Other kinds of turbocharging include sequential turbocharging, and staged turbocharging. The latter is used in diesel automobile racing

Parallel twin-turbo

Paralleled twin-turbo refers to the turbocharger configuration in which two identical turbochargers function simultaneously, splitting the turbocharging duties equally. Each turbocharger is driven by half of the engine's spent exhaust energy. In most applications, the compressed air from both turbos is combined in a common intake manifold and sent to the individual cylinders. Usually, each turbocharger is mounted to its own individual exhaust/turbo manifold, but on inline-type engines both turbochargers can be mounted to a single turbo manifold. Parallel twin turbos applied to V-shaped engines are usually mounted with one turbo assigned to each cylinder bank, providing packaging symmetry and simplifying plumbing over a single turbo setup. When used on inline engines, parallel twin turbos are commonly applied with two smaller turbos, which can provide similar performance with less turbo lag than a single larger turbo. Some examples of parallel twin-turbo inline engines are Nissan's RB26DETT, BMW's N54 and Volvo's B6284T and B6294T. Some examples of V formation engines with parallel twin-turbos include Mitsubishi's 6A12TT and 6G72TT; Nissan's VG30DETT and VR38DETT; and Audi's 1997-2002 S4 (B5), 1997-2005 A6, and 2003-2004 RS6.