Arias Pistons 12.5:1 Compression 82mm Bore Honda B-series on 2040-parts.com

Video: Autoweek thrashes the 2011 Porsche GT2 RS

Join Autoweek senior editor for motorsports Mac Morrison and road test editor Jonathan Wong as they put the 2011 Porsche GT2 RS through the paces at GingerMan Raceway in southwest Michigan. They take a closer look at what makes the car so special, and they get behind the wheel to find out for themselves. We'll bring you the GT2 RS VBox lap later this week, and stay tuned for Lexus LFA track action coming soon.

Lexus RC F Sport to debut at Geneva Motor Show

Lexus has announced that they'll be unveiling the 2015 RC 350 F Sport at next month's Geneva Motor Show, with the model meant to be positioned between the base RC 350 Coupe and the performance-oriented RC F. The automaker is promising that the RC F Sport will offer enhanced driving dynamics as well as exclusive exterior styling cues which will set it apart from the base version of the car. However, they're not making promises about the performance of its 450-hp performance of its 450-hp RC F sibling, which will be positioned at the top of the range.

Porsche 911 GT3 R Hybrid (2011) first official pictures

Porsche has released details of its updated 911 GT3 R Hybrid – the 2010 original nearly won last year's Nurburgring 24hr race before (ironically) it retired with petrol engine failure.  The 2011 Porsche 911 GT3 R Hybrid – the lowdown Before this report disappears in a chorus of ‘it looks the same as last year’s one’, let's outline where Porsche’s engineers have been busy. At the unfashionable end of the car remains a 4.0-litre flat-six engine producing approximately 470bhp. Up front are twin electric motors, now producing 75kW of power each (up from 60kW) and combined these give the GT3 R Hybrid a 197bhp electric boost, which can be programmed to activate automatically via the throttle pedal, or manually selected during overtaking. F1-derived hybrid tech for the 911 GT3 R Hybrid Power for the two electric motors doesn't come from batteries, but flywheel accumulator technology from Williams Hybrid Power, an offshoot of the Williams Formula 1 team. The flywheel, encased in a carbonfibre safety cell in the space where the passenger seat would be, spins at up to 40,000rpm and acts as a mechanical energy store for the electric motors. Regenerative braking feeds energy back into the flywheel system – no surprises there, as the technology is derived from Williams' exeprience with Kinetic Energy Recovery Systems (KERS) in F1.