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Spa 24 Hours: Porsche wins after pitlane start

GT World Challenge Europe Endurance
CrowdStrike 24 Hours of Spa
Spa 24 Hours: Porsche wins after pitlane start

Piastri summoned to F1 Austrian GP stewards

Formula 1
Austrian GP
Piastri summoned to F1 Austrian GP stewards

LIVE: F1 Austrian GP updates - Russell wins from Verstappen and Antonelli

Formula 1
Austrian GP
LIVE: F1 Austrian GP updates - Russell wins from Verstappen and Antonelli

F1 Austrian GP: Russell holds off Verstappen to win and cut Antonelli’s championship lead

Formula 1
Austrian GP
F1 Austrian GP: Russell holds off Verstappen to win and cut Antonelli’s championship lead

Acosta set for surgery after wrist issue leads to Dutch GP retirement

MotoGP
Dutch GP
Acosta set for surgery after wrist issue leads to Dutch GP retirement

Bezzecchi taken to hospital after nasty Dutch GP crash

MotoGP
Dutch GP
Bezzecchi taken to hospital after nasty Dutch GP crash

MotoGP Dutch GP: Ogura takes maiden win as Bezzecchi crashes out to give championship lead to Martin

MotoGP
Dutch GP
MotoGP Dutch GP: Ogura takes maiden win as Bezzecchi crashes out to give championship lead to Martin

WRC Acropolis Rally Greece: Ogier wins after double puncture derails Neuville

WRC
Rally Greece
WRC Acropolis Rally Greece: Ogier wins after double puncture derails Neuville

How Renault started F1's first turbo revolution in the 1970s

Formula 1 rules dictate that every car must be powered by the same type of turbo hybrid engine in the modern era, four decades on from the first turbo revolution beginning

By the mid-1970s F1 rules included an equivalency formula that allowed for turbo engines to race against the normally aspirated units that populated the whole grid.

Renault changed all that in 1977, and while it would lead to turbocharged engines having taken over F1 just a few years later, it wasn't a particularly smooth start for the manufacturer that ushered in a new era of F1 powerplants.

In this clip from the latest episode of Rapid Tech on Motorsport.tv, Peter Windsor and Craig Scarborough discuss the early days of Renault's turbo F1 project, and then go on to look at the influence it had in the sport and the road car industry.

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