BMW M Design Talk (see here), BMW M GmbH is releasing a new video introducing the shared heart of the new BMW M4 GT3 racing car and BMW M4 Competition production model (fuel consumption combined: 10.2 – 9.9 l/100 km [27.7 – 28.5 mpg imp] in the WLTP cycle, 10.2 l/100 km [27.7 mpg imp] in NEDC; CO2 emissions combined: 233 – 227 g/km in WLTP, 234 g/km in NEDC). In the BMW M4 Engine Talk, Marcus Engelke, Project Manager Drivetrain BMW M4, and Ulrich Schulz, Head of Drivetrain Design at BMW Motorsport, highlight fascinating details of the six-cylinder in-line engine with M TwinPower Turbo technology, which was conceived from the outset for both road cars and track machines.

“510 hp, 650 Newton metres (479 lb-ft) – this is the most powerful straight-six engine we’ve ever fitted in a production car,” says Marcus Engelke to kick off the video. “590 hp, 700 Newton metres (516 lb-ft) – this is the most powerful straight-six engine BMW has installed in a racing car since the days of the BMW M1 Group 5,” adds Ulrich Schulz. The two engineers go on to describe how incredibly similar the engine in the BMW M4 Competition is to its counterpart at the core of the new flagship model in the BMW M Motorsport line-up. Currently in its final year of development, the BMW M4 GT3 will be charged with helping BMW M Motorsport teams compete for GT race victories and titles around the world from 2022.

With components of the power unit in the production M model – including the crankcase, cylinder head, crankshaft drive, crankshaft and connecting rod – also designed to deliver maximum performance on the track, the perfect groundwork for the race-spec unit is already in place. Engelke and Schulz explore in detail how the engine is positioned and installed in the different cars, and underline their points with easy-to-understand sketches on a flipchart. This paints a clear picture of where the specific demands on the production/racing car engine lie and how BMW M GmbH has risen to the task of meeting those challenges.

As well as presenting the two complete engines, the experts also use the video to delve into individual components in detail, e.g. the dry sump pan and throttle valves of the racing engine, and the intercooler in the BMW M4 Competition. They also single out components which are identical in the two units, such as the connecting rod with pistons and theturbocharger housing – which was transferred to the racing car in unmodified form.
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