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.
Confirmed is a supercharged direct
injection gasoline mill with 335 hp and 339 lb ft in the S.
With 425 hp developed between 5,500 and 7,300 rpm and 406 lb - ft of torque between 1,850 and 5,500 rpm, the blown six delivers 11 hp and 110 ft - lb more than the naturally aspirated 4.0 - liter V8 direct -
injection gasoline mill it succeeds.
Not exact matches
Small - block design system engineer Mark Damico is leading development of the new
mill and isn't letting out many details, except to say the
gasoline direct -
injection system will employ solenoid actuators instead of more - expensive piezo - based units.