Corvette C6 Z06-R GT3
The Corvette C6 Z06-R GT3 is based on the normal production Z06 of the Corvette C6. In 2005, the Z06-R was developed by the tuner Ernst Wöhr on behalf of Carsport Holland (Toine Hezemans). At his company " Callaway Competition " in Leingarten , the series vehicles are converted into the Z06-R GT3. This racing version is intended exclusively for the FIA racing series according to GT3 regulations .
technology
Externally, the Z06-R GT3 is similar to the original Z06, but has been aerodynamically tested in the wind tunnel . The original aluminum chassis was replaced by one made of steel in order to enable the weldability with the safety cell according to FIA norms. The standard wheels were replaced by magnesium wheels from OZ with central locking, fitted with slicks (30 / 65-18 front and 31 / 71-18 rear). A Plexiglas rear window and a pneumatic car lifting system were installed. APP Racing Engines built the engine in the Netherlands. It has special dry sump lubrication , CP pistons and a special camshaft . The maximum speed of approx. 6300 rpm is lower than the production version (7000 rpm), but a higher speed is not necessary in the GT3, as the engine's output is limited by an FIA air flow limiter .
engine
Although the engine and thus the performance is almost the same as that of the production vehicle, the vehicle has better handling thanks to the lighter body made of carbon fiber reinforced plastic , a sequential transmission and the improved racing chassis.
The seven-liter V-engine with eight cylinders has an output of 540 hp (397 kW), around 30 hp (22 kW) more than a series-production LS7 model. The maximum torque of 650 Nm is also similar to the normal Z06 with 637 Nm. But the Z06-R weighs almost 200 kg less. With an empty weight of just over 1200 kg and together with the sequential gearbox, the GT3 Corvette accelerates from a standing start to 100 km / h in 3.9 seconds and to 200 km / h in 10.2 seconds. A maximum speed of 285 km / h is possible with the normally built-in gear ratio, but it can be increased to 320 km / h with other gears in the gearbox and thus changed gear ratio.
For the 2012 season, App Racing Engines developed a new 6.2-liter V8 racing engine based on the LS3.
landing gear
Since the 2008 season, the Corvette has also had a sequential 6-speed transmission from Hewland . The standard tanks were replaced by FT3 safety tank cells made of aramid with a quick tank system. The chassis is equipped with coil springs instead of leaf springs . Due to the large wheel diameters and rim widths, the body was widened by means of in-house developed fenders made of carbon fiber reinforced plastic. In addition, a front splitter and a rear wing were installed for more downforce. The homologation weight is 1,272 kg. Depending on the current FIA Balance of Performance regulation, the racing weight can be increased by adding ballast .
successes
Wöhr's goal was to design a vehicle that, with a well-coordinated engine, chassis and brakes, would be easier to control even a guest driver than the more powerful factory vehicles of the GT1 group . An additional silencer can be removed again if necessary. Because of the various noise regulations, a 98 decibel rear silencer is used for some track tests; normally the racing car develops 110 decibels.
In the FIA GT3 European Championship in 2008, this team with drivers James Ruffier and Arnaud Peyroles was almost unbeatable. With a lead of eleven points, the two French secured the European championship title in the Z06R GT3 at the season finale at the Dubai Autodrome . In doing so, they continued the success story of the Corvette developed and built by Callaway in the hard-fought GT3 European Championship. Having won the European Championship team classification in 2007, the driver runner-up in 2007 and the title in 2008, "Martini Callaway Racing" is the most successful team in the FIA GT3 European Championship, which has been held since 2006.
Here is a brief overview:
- 2007: Team master / champion in the FIA GT3 European Championship
- 2007: Vice-Driver-Champion in the FIA GT3 European Championship
- 2008: Third place as team champion in the FIA GT3 European Championship
- 2008: Arnaud Peyroles and James Ruffier driver champions in the FIA GT3 European Championship
- 2009: Vice-Driver-Champion in the ADAC GT Masters
- 2009: Team champion in the ADAC GT Masters
- 2010: Daniel Keilwitz and Christian Hohenadel driver championship in the FIA GT3 European Championship
- 2013: Daniel Keilwitz and Diego Alessi driver champions in the ADAC GT Masters
Technical specifications
| Technical specifications | Corvette Z06-R GT3 | Corvette Z06 (series) |
| engine | LS7 V8 7.0 liters | LS7 V8 7.0 liters |
| kW (PS) at 1 / min | 397 (540) / 6400 | 377 (512) / 6300 |
| Liter output | 77.1 hp / liter | 73 hp / liter |
| Nm at 1 / min | 650 | 637 |
| transmission | 6-speed sequential | 6-speed manual |
| Front / rear tires | 30-65-18 / 31-71-18 | 275-35-18 / 325-30-19 |
| Tire manufacturer | Michelin | Goodyear |
| Length Width Height | 4545/1927/1190 mm | 4459/1927/1246 mm |
| Empty weight | 1272 kg | 1418 kg |
| Power to weight ratio | 2.36 kg / hp | 2.77 kg / hp |
| Tank volume | 100 liters | 69 liters |
| fuel | FIA racing fuel 102 | Super Plus |
| Vehicle price (2009) | € 265,000 | € 88,000 |
Performance
| Readings | Corvette Z06-R GT3 | Corvette Z06 (series) |
| Acceleration 0-100 km / h | 3.9 s | 3.9 s |
| Acceleration 0–200 km / h | 10.1 s | 11.9 s |
| Braking distance from 100–0 km / h | approx. 28 m | 34.9 m |
| Top speed | 295-320 km / h | 320 km / h |
