Saleen Adds Two Turbochargers to the S7

Saleen knows all about power. As in S281 Mustangs, N2O Focuses and the S7, America’s first (and still the only) mid-engine exotic supercar. When it went on sale in 2002, the S7 was the only street-legal car in the U.S. with more than 500 horsepower and 500 lb-ft of torque. The media and S7 owners have raved about the car since it first smoked the rear tires in anger.

And it has been recognized by numerous automotive magazines as the fastest production car in the world. But during the past three years the automobile marketplace has witnessed an explosion of performance with models from manufacturers including Ferrari, Lamborghini, Mercedes-Benz, Porsche and Chevrolet touting power numbers above the once magic 500 level.

Saleen is not an organization content to rest on yesterday’s 0-60 mph times or quarter-mile speeds. So is 2005, it was “goodbye S7” and “all hail the S7 Twin Turbo!” This is the first major change to the S7 since its introduction, and it is a big change as in 750 horsepower and 700 lb-ft of torque, numbers the competition will be chasing for a long while we predict.

Aerodynamics has also come under scrutiny in 2005. Unless you place the new S7 Twin Turbo next to one of the original 2002 models, you probably won’t notice that the 2005 version has a different diffuser/rear spoiler package and reshaped front fenders to enhance the S7s already sleek, swoopy and aerodynamic contours. To complement the Twin Turbo’s enhanced straight-line performance envelope the S7 chassis has also undergone a fair amount of tweaking. Virtually every suspension pickup point has been changed, and the suspension geometry has been modified for less squat and dive during acceleration and braking.

Designed by Saleen engineers, the S7's engine and drivetrain incorporate the latest in modern racing technology. The new all-aluminum V8 engine casting was engineered and tooled by Saleen to displace seven liters. Redline is 6500 rpm. Space age materials and engineering are used throughout, including stainless steel valves, titanium retainers, beryllium exhaust valve seats, an aluminum throttle body, Saleen designed aluminum CNC-machined cylinder heads and stainless steel exhaust system.

An exclusive Saleen-designed Front Engine Accessory Drive (FEAD) system results in an extremely compact engine, allowing for better packaging and overall weight distribution. The V8 incorporates a unique Saleen-designed side-mounted water pump, a belt-driven camshaft drive and a Saleen-engineered dry sump oil delivery system. The engine's mid-chassis placement optimizes weight distribution and center of gravity, making room for an unusually tall engine that allows for a very efficient induction system.

Air enters a roof intake, passes through a 90-mm mass air meter and feeds into a carbon fiber plenum. From the plenum the air is routed to the twin ball bearing turbos, is pressurized to 5.5 psi max and then passes through an oval-bore throttle body into an aluminum intake manifold with eight individual runners.