Since the latest generation of the Porsche 911 RSR GTE racer was unleashed in 2017, endurance venues around the world have been reverberating with the symphony of the flat-six. In fact, those that take a week out of their lives to make the annual pilgrimage to Le Mans in June will know that the sound of the Porsche overpowers every other car on track.

That ear-wrecking song comes from a constantly reworked exhaust system, but most importantly, a beautifully engineered 4.0-litre flat-six engine with an astonishing 9,500rpm rev limit. Whereas most GTE contenders have moved to turbocharged engines, Porsche has stuck with the free-flowing aspect naturally aspirated monster. That means that instead of a dull engine pitch and the odd whistle, the 911 gives off a ghostly wail.

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Classic racing fans will know that this reputation of inducing tinnitus in spectators around the world isn’t new for the Stuttgart brand. In fact, the loud flat-six engine has been used by Porsche for over 60 years.

Last week saw flocks of historic racecars converse at the Daytona International Speedway for the HSR Classic 24 Hour at Daytona International Speedway. As with most historic events, a lot of the field was made up of Porsche 911 RSRs from back in the day making for some eargasmic sound coming from the banking.

From onboard, the sound is somewhat deadened. However, I can assure you that from the immense grandstand at Daytona, it would have sounded mindboggling.

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