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

Tomorrow’s world: Fiat's MultiAir engine tech

By Jesse Crosse Motor Industry 14 October 2009 16:50 Fiat this year launches what it claims is a big step forward in variable valve timing: MultiAir. It's the first time that a manufacturer has made a properly variable valve system a production reality, and will slowly be rolled out across most of Fiat's and Alfa's car ranges.How does Fiat's MultiAir vary from existing variable valve timing (VVT) systems?Current VVT systems rely on mechanical systems to open and close the valves. Engineers have long understood the benefits of changing valve opening and closing times to tweak an engine's power and emissions performance, depending on the need for power or parsimony.Valves are an engine's nose and mouth – it inhales through inlet valves and exhales through exhaust valves.

Bentley Continental Supersports Convertible (2010): first official pictures

By Tim Pollard First Official Pictures 17 February 2010 10:46 Bentley today opened up its new Continental Supersports Convertible – the soft-top version of the E85-swilling Supersports coupé. It's the fastest rag-top ever to roll out of Crewe's gates, hitting 60mph in 3.9sec and 202mph flat out.The four-seater Conti Supersports Convertible follows closely the format of the 2009 coupé and arrives as Bentley has extended the Supersports' E85 diet across the entire 2011 model year Continental range. It's all part of Bentley's pledge to have every model biofuel-compatible by 2012, a key plank in its bid to make Bentleys acceptable in a carbon-crunched world.

Murray Walker 'astounded' by reunion with father's racing motorbike

VETERAN broadcaster and motorsports commentator Murray Walker was for once left speechless after he was reunited with one of his father’s old Rudge racing motorbikes. During a Royal Automobile Club dinner, where he was a guest of honour, the 90-year-old ‘voice of Formula 1’ was overwhelmed by a surprise unveiling of a group of classic racers that had been assembled by the Club on his behalf. Ever-fewer people remember that Graham Walker, Murray’s father, was a hugely successful motorbike racer with brands including Rudge.