Porsche has unveiled a revised version of its most powerful race car based on the 911, the GT3 RSR. Its predecessor managed to score several wins in the renowned 24-hour races at Designed for competition in the GT2 class of international long-distance racing, the revised 911 GT3 RSR has gained many modifications. The most distinguishing feature of the new GT3 RSR is the front end, which receives major improvements to the aerodynamics. Internal mods include a new range of suspension set-up options and a new sequential six-speed gearbox which is considerably lighter than its predecessor. -Continued
The 3.8-litre flat-six cylinder ‘boxer’ engine of the GT3 RSR remains unchanged apart from slight improvements to details. It delivers 465bhp at 8,000rpm and maximum torque of 430Nm at 7,250rpm while the rev limiter kicks in at 9,400rpm.
Technical Description Porsche 911 GT3 RSR (2008)
Engine
Six-cylinder aluminium boxer engine, water-cooled; 3,795 cc; stroke 76.4mm; bore 102.7 mm; 465 bhp (342 kW) at 8,000rpm; max. torque 430 Nm at 7,250rpm; air restrictors 2 x 29.5 mm; maximum engine speed 9,400rpm; four valves per cylinder; dry sump lubrication; individual throttle butterflies; central air intake; electronic MS 4.0 engine management; fuel injection; fuel grade: RON 98 Super Plus unleaded
Transmission
Six-speed gearbox with sequential jaw-type shift; oil/water heat exchanger; single-mass flywheel; hydraulic disengagement lever; three-plate carbon-fibre clutch; rear wheel drive; limited-slip differential 45/65 %
Body
Monocoque body (basis GT3 RS) of hot-galvanised steel; aerodynamically optimised front end with front spoiler; aerodynamically optimised front underfloor; adjustable rear wing; 90-litre safety fuel tank with fast filling function; air jack; welded-in safety cage; bucket-type racing seat (on driver's side only) with flame-resistant seat cover; six-point seat belt adapted for use of the HANS Head and Neck Support; electric fire-extinguishing system
Suspension
Front: McPherson spring strut axle; Sachs four-way gas pressure dampers; double coil springs (main and ancillary spring); front axle arms adjustable for camber; adjustable sword-type anti-roll bar on both sides; power steering
Rear: Multi-arm axle with rigidly mounted axle sub-frame; Sachs four-way gas pressure dampers; double coil springs (main and auxiliary spring); rear axle tie-bar reinforced and infinitely adjustable; adjustable sword-type anti-roll bar on both sides
Complete suspension infinitely adjustable (height, camber, track)
Brakes
Brake system with balance bar control
Front: Single-piece six-piston aluminium fixed callipers; inner-vented, 380mm in diameter; racing brake pads
Rear: Single-piece four-piston aluminium fixed callipers; inner-vented, 355mm in diameter; racing brake pads
Wheels
Front: Three-piece BBS light-alloy wheels (11J x 18-34); central bolt
Rear: Three-piece BBS light-alloy wheels (13J x 18-12.5); central bolt
Electrical System
Motec display with integrated data recording; adjustable traction control;
battery: 12 volt, 50 Ah, 140 Ah alternator
Weight
Approx. 1,225 kg complying with A.C.O. regulations, 1,200 kg complying with
FIA regulations