Porsche Teams Look to Expand LMP2, GT2 Leads in Ohio(16 July 2008)
Only days after fierce competition at Lime Rock Park, where the Porsche and Acuras did LMP2 battle and the Porsche and Ferraris tangled in GT2, the American Le Mans Series moves to the Mid-Ohio Sports Car Course in Lexington, Ohio, for the Acura Sports Car Challenge.
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GT2In the GT2 class for production-based sports cars, Porsche teams launch into the second half of the season leading the championship points. Multi-time ALMS champion Joerg Bergmeister and his teammate Wolf Henzler (both Germany) won not only in Sebring and Salt Lake City this season but also at Lime Rock last weekend with the #45 Flying Lizard Motorsports Porsche 911 GT3 RSR. Lizard team drivers Johannes van Overbeek (USA) and Patrick Pilet (France), along with the third pairing of Seth Neiman (USA)/Lonnie Pechnik (USA) will round out that team's Porsche entries.
The GT2 pole-sitters from Lime Rock, the Farnbacher Loles Racing Porsche 911 GT3 RSR of Dirk Werner (Germany) and Richard Westbrook (Great Britain), is coming off its fine second-place finish last weekend. And the VICI Racing Porsche 911 GT3 RSR returns to the series after a one-race hiatus, with Nicky Pastorelli and brother Francesco Pastorelli (The Netherlands) at the helm.
Starting the race at Lime Rock Park, the Porsche 911 GT3 RSR car features a new four-liter engine with a further improved drivability.
Here is a comparison between the 3.8-liter engine and new four liter powerplant. The horsepower remains the same.
997 GT3 RSR: 3.8 litre (MY08) vs 4.0 litre (MY09)
Minimum weight: 1200kg vs 1200kg
Displacement: 3795cc vs 3996cc
Cylinders: 6 vs 6
Valves/cylinder: 4 vs 4
Bore: 102.7mm vs 102.7mm
Stroke: 76.4mm vs 80.4mm
Restrictor diameter: 29.5mm vs 29.3mm 997-GT3-RSR_4-litre_ALMS_Link 
