Friday, January 23, 2009

Porsche 2009 GT3 RSR


    Porsche recently unveiled its latest GT2-class racing car, the GT3 RSR.

    The GT3 RSR is powered by a rear mounted six cylinder engine with displacement now up to 4-liters to the 3.8-liter of last year. What is baffling is that last years car produced 465hp@8000 rpm but this years car puts out 450hp@7,800rpm, the difference is not much and it could be down to sacrificing power for reliability. Torque is the same as last year at 430Nm@7,250rpm.

    The rev limiter kicks in at 9000, and Porsche says that the new car’s torque curve is better-optimized than the outgoing car’s.

    Technical Description Porsche GT3 RS

    Engine:
    Water-cooled, six-cylinder boxer engine; four valves
    per cylinder; dry sump lubrication; individual throttle
    butterflies; fuel injection; air restrictors 2 x 29.5 mm.

    Bore:
    102.7 mm

    Stroke:
    80.4 mm

    Capacity:
    3,996 cc

    Power output:
    331 kW (450 bhp) at 7,800 rpm

    Max. Torque:
    430 Nm at 7,250 rpm

    Max. revs:
    9,400 rpm

    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, 380 mm in diameter; racing brake pads.

    Rear: Single-piece four-piston aluminium fixed callipers;
    inner-vented, 355 mm 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; multi-function
    display with integrated gearshift indicator; adjustable
    traction control; battery: 12 volt, 50 Ah, 140 Ah alternator.

    Weight:
    Approx. 1,220 kg complying with A.C.O. regulations,
    1,245 kg complying with FIA regulations.

    source:zerotohundredSource URL: https://newcarscarsrevew.blogspot.com/2009/01/porsche-2009-gt3-rsr.html
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