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

Rennsport Reunion IV closes with Porsche 917s tearing around the track

Rennsport IV, three days of serious Porsche love at Mazda Racway Laguna Seca, concluded on Sunday with a half-dozen races around the picturesque track near Monterey, Calif. And while there were a variety of all things Porsche to see and hear through the three days, Sunday saw some of Porsche's most powerful race cars take to the track. It was certainly a case of saving the best for last.

Lamborghini Aventador J – this morning’s Lamborghini Unica leaks

Lamborghini Aventador J - heading for Geneva After the tease this morning for the Lamborghini Unica, we get a leaked photo of the real deal – the Lamborghini Aventador J. This morning Lamborghini released a tease for a new super sports car at Geneva next week, and we wondered what it was. Turns out it’s the Lamborghini Aventador J, an extreme roadster version of the new Aventador.

Lamborghini LP650-4 Roadster – in the wild

Lamborghini Murcielago LP650-4 Roadster at a motor event in the US We first got details on the new Lamborghini LP650-4 Roadster back in February, and Lamborghini subsequently issued a set of pictures to show it was real. But it was a bit of a surprise to see a real one turn up at a Lamborghini event in the US. Sporting the same 650bhp as the Lamborghini Reventon, the LP650-4 Roadster is the last of the line of open-topped Murcielagos (apart from the Reventon Roadster – which as there will only be 9 doesn’t really count), and is the successor to the LP640 Roadster.