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

Alfa Romeo 4C hits the track (video)

The Alfa Romeo 4C (pictured) out on track – on video The Alfa Romeo 4C has been on its way for longer than it should have been. But Alfa Romeo finally got round to revealing the 4C in prodiction spec at the Geneva Motor Show in March, and visitors to this year’s Goodwood Festival of Speed later this month will get to see the 4C strutting its stuff up the hillclimb. But ahead of that dynamic debut, Alfa has released new video of the 4C out playing on the Balocco Racetrack in Italy, with a few wailing exhausts notes but far to much dramatic music as a soundtrack.

One Lap of the Web: Remembering Ayrton Senna

-- Hard to believe it's been 20 years since the passing of Formula One legend Ayrton Senna, but one Jalopnik reader remembers the bloody weekend in San Marino vividly. A dream vacation in Europe cumulating in the ill-fated Grand Prix: Alan Dahl saw Senna's wrecked car coming into the pits, but like the rest of the crowd, he wouldn't find out Senna's fate until he left the track. "For years afterwards I felt guilty that, not knowing that the tragedy had happened," he said, "that I had fun at the race." -- The excellent 8W, a site of racing driver stories, recounts the last 96 hours of Senna's life.

McLaren announces official P1 performance figures (2013)

By Ollie Kew First Official Pictures 21 October 2013 14:00 McLaren has finally finished throat-clearing about the P1 supercar, and announced official, confirmed performance figures for the £866,000 hyper-hybrid. No more ‘approximately’ this and ‘sub’ that: here’s the complete list of top trumps. • 0-62mph (100km/h): 2.8sec – the same as a Nissan GT-R, 0.1sec faster than a Lamborghini Aventador, and 0.4sec faster than the original McLaren F1.• 0-124mph (200km/h): 6.8sec – faster than CAR’s long-term Subaru BRZ coupe hits 62mph.• 0-186mph (300km/h): 15.6sec – 5.5sec faster than a McLaren F1.