Hybrid V8 Turbo Engine For LMDh Racing

BMW's M division is poised to begin a new era of motorsports testing. It will push a new hybrid V8 built for IMSA GTP.

BMW wanted an LMDh hybrid propulsion system for the 2023 Weathertech SportsCar Championship. BMW already has a turbocharged V8, the P63, for the M8 GTE, but it proved too heavy.

The M4 DTM's P48 four-cylinder engine was also evaluated but may have had durability issues. BMW was inspired by a 2017 and 2018 M4 DTM.

The car's V8 was dubbed P66/1. After modifications, the P66/3 engine was created.

BMW's P66/2 had turbochargers and a redesigned crank drive. After verifying the new engine could enhance performance while maintaining temperature, BMW electrified the P66/3.

This wasn't as easy as it seems. Ulrich Schulz, head of drivetrain design at BMW M Motorsport, lauded the team for transforming the normally-aspirated P66/1 engine into a bi-turbo and hybrid drive system.

We fired up the entire drive unit a few weeks ago thanks to the competence, fantastic coordination, and high motivation of all departments. We feel nothing is stopping testing."

This new 4.0-liter turbocharged V8 delivers 640 horsepower (477 kW) and 479 lb-ft (650 Nm) of torque.

After starting for the first time a few weeks ago, the engine is ready for full-scale, full-speed testing in a racecar.