Feb 13, 2008 9:43:44 AM
- Spyderidol
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Feb 13, 2008 12:19:21 PM
- Joost
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Re: Pictures of the 2008 997GT3RSR
Wow!
Here is the press release. If anybody wants those pics at original resolution, just send me a pm with your emailaddress in it.
-Joost-
Here is the press release. If anybody wants those pics at original resolution, just send me a pm with your emailaddress in it.
-Joost-
Quote:
Most powerful racing 911 considerably improved
Stuttgart. The Porsche GT3 RSR launches into the new model year with extensive modifications. The most powerful race car based on the Porsche 911, which last year scored wins at the 24 hour races of Le Mans and Spa as well as overall victory at the Nuerburgring 24 hours, competes in the GT2 class at international long distance races. The most distinguishing feature of the new GT3 RSR is the front end which received major improvements to the aerodynamics. The majority of innovations however are hidden under the weight-optimised body.
Aside from the easily recognisable additional spoilers on the front apron, so-called flicks, an optimised air ducting with newly-designed side air outlets generates more downforce and reduces drag. The rear end including the rear wing was taken over from the predecessor. Extensive changes to the suspension cinematics increase mechanical grip considerably. The range of possible suspension set-ups was broadened.
The 3.8-litre boxer engine of the GT3 RSR remains unchanged apart from slight improvements to details. It delivers 465 hp (342 kW) at 8,000 revs per minute and delivers a maximum torque of 430 Nm at 7,250 revs. The rev limiter of the efficient six-cylinder kicks in at 9,400 rpm.
Much of the know-how in the GT3 RSR's totally new gearbox has come from the RS Spyder sports prototype. The sequential six-speed unit, developed by Porsche engineers, is considerably lighter than its predecessor. Internal friction was substantially reduced. The flat angle of the drive shafts allows teams a wider range of suspension set-ups.
Aside from the GT3 Cup and the GT3 Cup S, the GT3 RSR is the third race car based on the Porsche 911 offered by Porsche Motorsport. Thirty-five units of the fastest and most powerful long distance racer made in Weissach, apart from the exclusive RS Spyder sports prototype, are now being produced and delivered to customer teams around the globe. The price of the GT3 RSR is 349,800 Euro plus VAT.
Technical Description Porsche GT3 RSR (2008)
Engine
Six-cylinder aluminium boxer engine, water-cooled; 3,795 cc; stroke 76.4 mm; bore 102.7 mm; 465 bhp (342 kW) at 8,000 rpm; max. torque 430 Nm at 7,250 rpm; air restrictors 2 x 29.5 mm; maximum engine speed 9,400 rpm; 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.
Power 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; 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.
Feb 13, 2008 12:56:49 PM
- reginos
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Feb 14, 2008 12:49:47 PM
- Boxster Coupe GTS
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997 GT3 RSR - Engine Spec 2007 vs 2008...
997 GT3 RSR - Engine Spec 2007 vs 2008...
* 2007 Engine Spec:
Six-cylinder boxer engine, water-cooled
3,795 cc
stroke 76.4 mm
bore 102.7 mm
max. power: 358 kW (485 bhp) at 8,400 rpm
max. torque: 435 Nm at 7,250 rpm
air 2 x 30.3 mm restrictors
max. rpm: 9,000 rpm
four-valve cylinder heads
dry-sump lubrication system with engine mounted dry-sump tank made from carbon fiber
oil-water heat exchanger
oil and cooling water refilling system
intake manifold made of carbon fiber with dual air restrictors and single throttle per cylinder, dual restrictor
electronic engine management system BOSCH MS 4.0
required fuel quality: 98 octane ROZ, unleaded
race exhaust: multiple pipe manifold, open exhaust, no catalytic converter
* 2008 Engine Spec:
Six-cylinder aluminium boxer engine, water-cooled
3,795 cc
stroke 76.4 mm
bore 102.7 mm
465 bhp (342 kW) at 8,000 rpm
max. torque 430 Nm at 7,250 rpm
air restrictors 2 x 29.5 mm
maximum engine speed 9,400 rpm
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; ALMS E-10 Ethanol mix
Interesting that the 2008 spec sheet does not refer to the "maximum" power output...
* 2007 Engine Spec:
Six-cylinder boxer engine, water-cooled
3,795 cc
stroke 76.4 mm
bore 102.7 mm
max. power: 358 kW (485 bhp) at 8,400 rpm
max. torque: 435 Nm at 7,250 rpm
air 2 x 30.3 mm restrictors
max. rpm: 9,000 rpm
four-valve cylinder heads
dry-sump lubrication system with engine mounted dry-sump tank made from carbon fiber
oil-water heat exchanger
oil and cooling water refilling system
intake manifold made of carbon fiber with dual air restrictors and single throttle per cylinder, dual restrictor
electronic engine management system BOSCH MS 4.0
required fuel quality: 98 octane ROZ, unleaded
race exhaust: multiple pipe manifold, open exhaust, no catalytic converter
* 2008 Engine Spec:
Six-cylinder aluminium boxer engine, water-cooled
3,795 cc
stroke 76.4 mm
bore 102.7 mm
465 bhp (342 kW) at 8,000 rpm
max. torque 430 Nm at 7,250 rpm
air restrictors 2 x 29.5 mm
maximum engine speed 9,400 rpm
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; ALMS E-10 Ethanol mix
Interesting that the 2008 spec sheet does not refer to the "maximum" power output...
Feb 14, 2008 9:01:49 PM
- Modrocket_stereo
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Feb 14, 2008 10:35:13 PM
- Grant
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Re: 997 GT3 RSR - Engine Spec 2007 vs 2008...
I wish they would transfer the "Individual Throttle Butterlies" technology to the road GT3. Makes for better sound, power, and throttle response. BMW M cars is one of the only companies doing this in a road car anymore.
911 for the road hasn't had that since 1973 in the US...
911 for the road hasn't had that since 1973 in the US...
Feb 15, 2008 5:40:29 AM
- Spyderidol
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Re: 997 GT3 RSR - Engine Spec 2007 vs 2008...
Quote:
Modrocket_stereo said:
They probably lowered the power so the weight of the car would go down.
No Modrocket, the weight is the same.
One would not really expect Porsche (or any other manufacturer) to publish the details of their racing engines.
Feb 16, 2008 8:46:28 AM
- Modrocket_stereo
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