Flat-sixteen engine

A flat-16 is a rarely used internal combustion engine with a flat configuration.

The British engine manufacturing company Coventry Climax developed a flat-16 unit, the FWMW, between 1963 and 1965, towards the end of the 1.5-litre Formula One era. The Brabham and Lotus teams designed cars for this engine but it was never raced. This was due to reliability problems in testing and it failed to develop more power than the engine it was meant to replace, the V8 FWMV.

Porsche ran some tests with a dual-spark flat-16 Can-Am version of the 917, but it too was never raced, as turbocharging the existing flat-12 produced the required power.

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