1999 Mercury 225 Optimax Crankcase Powerhead on 2040-parts.com

New BMW M3 and M4 engine secrets laid bare

BMW's M division has lifted the veil of secrecy on the inline six-cylinder engine bound for its upcoming M3 sedan and new-to-the-range M4 coupe and convertible, revealing a potent twin-turbocharged 3.0-liter direct injection gasoline unit that produces an official 424 hp at 7,500 rpm and what officials describe as "significantly more than 369 lb-ft" of torque. The newly developed engine, known under the internal codename S55 B30, shares its 84.0 mm bore and 89.6 mm stroke with BMW's standard turbocharged 3.0-liter in-line six-cylinder direct-injection gasoline mill, the M55 used across the German car maker's lineup, endowing the aluminum block unit with an overall swept volume of 2,979 cc. This represents a sizeable 990 cc reduction on the engine BMW's M division's new unit replaces, the S65.

Ken Block’s Gymkhana Five: The Streets of San Francisco

Everyone’s favourite Hooner and Drifter – Ken Block – is back with Gymkhana Five, a mad blat round the streets of San Francisco. If you want a car video full of tyre smoke, drifting and downright hooning madness, Ken Block’s your man. This time, with Gymkhana 5, the good Mr Block takes his 650hp Ford Fiesta on a blat round every familiar landmark in the streets of San Francisco, and manages to do it much more impressively than Karl Malden or Michael Douglas ever did.

One Lap of the Web: Cars of Concours d'Lemons, Rally New England and a Hudson Italia

- More than 80 unique cars are trucks have just finished Rally New England, traveling 1,300 miles through the northeast, all for a good cause. Hooniverse's Robby DeGraff took part in the rally as part of a film crew, and shares his journey with readers. The rally ran from Ithaca, N.Y., to Saint John, New Brunswick, and raised money for Camp Sunshine, an organization that invites children with life-threatening diseases and their families to have fun at camp for a week for free.