BMW equips new M2 CS with uprated engine


German OEM BMW has unveiled its latest M2 variant, the M2 CS. At the heart of the coupe is an uprated S55 3-liter inline six-cylinder engine with BMW TwinPower turbo technology. Producing 450ps at 6,250rpm and 550Nm of torque between 2,350rpm and 5,500rpm, the power plant allows the M2 CS to accelerate from 0-100km/h in 3.8 seconds when equipped with the brand’s 7-speed DCT.

The wide, flat torque curve, the linear build-up of power and a 7,600rpm redline mean that the engine promises to ensure responsiveness. Two, quick-spooling mono-scroll turbochargers, high-precision direct injection, Valvetronic variable valve timing and Double-Vanos fully variable cam timing deliver fast throttle input response.

The S55 engine block is of a closed-deck design to deal with high cylinder pressures. Cylinder walls are coated with a wire-arc sprayed-on coating instead of liners to help reduce weight. The exhaust gases are routed through a dual-branch exhaust system with electronically controlled exhaust valves and two, twin-exhaust pipes.

Cooling is provided by a central radiator, two smaller side radiators, an oil cooler, two scavenging pumps in the oil sump pan along with a sump baffle to help control oil movement. An oil return system near the turbochargers helps keep the flow of oil steady during acceleration and braking.


About Author


Sam joined the UKi Media & Events automotive team in 2017, having recently graduated from the University of Brighton with a degree in journalism. For the newest addition to the editorial team, stepping into the assistant editor position signalled the start of a career in the subject he studied. Now deputy editor for Professional MotorSport World and Engine + Powertrain Technology International, Sam writes content for both of the magazines and websites.

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