Two teams sign up to run 2007 Porsche

PORSCHE MOTORSPORT NORTH AMERICA UNVEILS 2007 PORSCHE 911 GT3 RSR AT ROAD ATLANTA; FLYING LIZARD MOTORSPORTS, TAFEL RACING SIGN UP ATLANTA - September 29 - The latest version of the Porsche 911 sports car - type 997 - has already been hailed by...


ATLANTA - September 29 - The latest version of the Porsche 911 sports car - type 997 - has already been hailed by the media, dealers and owners as the best 911 ever, so it is no surprise that the North American unveiling of the race car version, the 2007 Porsche 911 GT3 RSR, today at Road Atlanta has caused equal excitement.

"We are pleased not only to show the car to the racing world for the first time in the U.S., but to announce that two veteran Porsche racing teams have committed to buy the car to race next year in the American Le Mans Series. Both Flying Lizard Motorsports and Tafel Racing have won races in Porsche 911 race cars this year covering both major U.S. road racing series, and each team has decades of skillful Porsche technicians who are capable of preparing this new car for an ALMS championship run," said Uwe Brettel, president of Porsche Motorsport North America, the Santa Ana, Calif.-based subsidiary of Porsche AG responsible for race car sales, service and parts in North America.

"Porsche has a long and inspiring history of responding to competitive challenges. The release of the 997 is the next chapter in that story. We'repleased that Flying Lizard will get a chance to play a part in it," said Seth Neiman, Flying Lizard Motorsports principal and driver of the team's No. 44 Porsche.

"This relationship with Porsche will be a great opportunity for Tafel Racing to add to its engineering resources in a quality environment." said Jim Tafel. "Our program is at a point in our developmental where we feel that we can perform well against the high level of competition we will find."

Brettel indicated that other U.S. teams have shown interest in the newest Porsche road racer for 2007, and that he hopes there will be additional team announcements soon.

Using the full resources of the Porsche engineering staff at its Weissach motorsports facility, and combining the racing technology developed over 50 years of motorsports competition, Porsche Motorsport in Germany tested the car at the 24 Hours of Spa in late July with Manthay Racing entering a two-car team, with both cars finishing the event.

"We learned a lot during the test race at Spa, and made changes in the car which we brought to a three-day test at Sebring last week. There, we learned some more, and will continue to refine the components through the end of year, when our customers will take delivery in time for the ALMS Winter test at Sebring in January," said Brettel.

The new 2007 911 GT3 RSR is slated for competition in the American Le Mans Series starting with the 12 Hours of Sebring, as well as other world GT racing venues. The latest version of the most successful racing sports car in history is based on the street production model 911 GT3 RS (model year 2007) which will be launched in late 2006.

Featuring the body of the 911 GT3 RS, which is based on the 911 Carrera 4, the 911 GT3 RSR has wider rear fenders and rear track to improve performance capabilities over its predecessor. The car has also been developed to fit into the 1,225 kg class, which allows for two inch-wider rear wheels (14 inches), and part of the added weight has been used to lower the center of gravity. The new 911 GT3 RSR will also improve aerodynamic efficiency by seven percent and body stiffness has been increased by 10%.

"This is not just an update of an existing race car," said Brettel.

"We have taken all our production-based racing and sports car expertise, from the 550 Spyder to the Carrera GT, and all the GT3-R models since 1999, to create the best race car we can build to the existing sports car GT class rules," said Brettel.

The new car is built in accordance with the 2006 ACO LMGT2 Regulations and the 2006 FIA Article 257 (Technical Regulations for Series Grand Touring Cars).

Brettel noted that more than 250 of GT3-R family of 911 race cars have been sold around the world since the introduction of the 911 GT3 R in 1999, and the car has won hundreds of professional races and championships including the 24 Hours of Le Mans, the 24 Hours at Daytona, the 12 Hours of Sebring, and 53 class wins in the American Le Mans Series. In ALMS, the Porsche teams using the GT3 R/RS/RSR have won the championship six of the series' seven-year existence.

Employing a 3.8-litre, flat six-cylinder boxer engine, the 911 GT3 RSR delivers 485 hp at 8,400 revs per minute (with two 30.3 mm restrictors). Maximum torque is now 435 Nm at 7,250 rpm.

The 911 GT3 RSR also has many notable changes from its predecessor. The brake master-cylinders, clutch master cylinder and pedals have been pre-mounted to a sub- frame, which is then bolted onto the floor to gain stiffness and a lower center of gravity. The re-designed electrical system optimizes serviceability by placing all relevant elements in the immediate vicinity of the driver.

The racing suspension, with McPherson struts in the front and the Porsche multi-link axle at the rear, feature new kinematics and closely corresponds to the configuration of the street-legal 911 GT3 RS. The new ZF-Sachs shock absorbers build up less friction and offer excellent response. The adjustable double coil springs, roll bars and shock absorbers ensure precise tuning to suit each circuit.

The 911 GT3 RSR features a brake system with six-piston fixed brake calipers measuring 380 mm in the front, four-piston fixed calipers measuring 355 mm in the rear.

2007 Porsche 911 GT3 RSR (type 997) - Specifications

single-seated GT race vehicle

basis: Model Year 2007 Porsche 911 GT3 RS (997; street legal version), homologated
from January 2007 onwards

flat six-cylinder boxer engine, water-cooled

3,795 cc, stroke 76.4 mm, bore 102.7 mm Ø

max. torque: 435 Nm at 7,250 rpm

max. power: 358 kW (485 bhp) at 8,400 rpm with 2 x 30.3 mm restrictors

max. rpm: 9,000 rpm

four-valve cylinder heads

oil-water heat exchanger

dry-sump lubrication system with engine mounted dry-sump tank made from carbon fiber

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

Power Train:
six-speed sequential dog type manual transmission, strait cut gears

"in-line" shift mechanism, sensor controlled traction interruption

oil-water heat exchanger

single-mass flywheel with triple-disc race clutch

limited slip differential 40/60%

rear-wheel drive

weight optimized and widened 911 GT3 RS chassis (add-on parts made from carbon/kevlar fiber)

welded-in roll cage

racing seat with fire retardant upholstery, weight optimized

six-point seat belt, prepared for using HANS Safety System

three-point air jack system

aerodynamically optimized front and rear part

flat underfloor made from carbon fiber

adjustable rear wing

removable steering wheel (quick-connect coupling)

fire extinguishing system

100 litre FT3 safety fuel tank with quick refuelling system

McPherson front axle with uniball joints and corresponding changes of kinematics

adjustable front roll bar, blade type

power steering

multilink rear suspension with uniball joints and corresponding changes of kinematics

adjustable rear roll bar, blade type

double coil springs in front and rear adjustable in four different positions

front and rear struts with adjustable Sachs shock absorbers

suspension continuously adjustable (heights, camber, track)

Brake System:
dual master cylinders, brake force balance adjustable by bias bar system

six-piston fixed brake callipers in the front

weight-optimized internally vented brake discs; 380 mm diameter

four-piston fixed brake callipers in the rear

weight-optimized internally vented brake discs; 355 mm diameter


front axle:
three-piece BBS light aluminium rims 11J x 18 (offset to be determined) with central locking wheel nuts (system from Carrera GT)

tires to be determined (standard: rain tires 27/65-18)

rear axle:
three-piece BBS light aluminium rims 13J x 18 (offset to be determined) with central locking wheel nuts (system from Carrera GT)

tires to be determined (standard: rain tires 31/71-18)

Bosch MS 4.0 engine management

Motec display with integrated data recording

battery: 12 Volt, 50 Ah

additional ventilation for driver (fan)

110 Ah generator

wiring harness prepared to accept A.C.O. stack data logging system

Vehicle Weight:
1,225 kilograms (lighter version upon request)

Price excluding tax at factory:

-credit: porsche

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About this article
Series ALMS
Drivers Seth Neiman , Jim Tafel
Teams Flying Lizard Motorsports