[Ephaeton]

Originally Posted by ss_collins

The 2014 F1 engines pretty much do have to run for 24 hours, as they cannot be changed - the teams in 2015 will only have 4 per season if memory serves, thats more that 24 hours per engine.

Remi Taffin: "Can't use F1 engine for Le Mans" (german)

It does depend, says Taffin, on whether you're only riding 300km a piece or 24h long: "Our engines do survive 5000 km. But they won't survive this in one go, as a 24h race has quite a different rhythm [than a F1 race]. You can't compare those two". Even though this might've been possible back in the old days, Taffin says nowadays this cannot be done: "For sure you can do both today [as an engine supplier] but surely no longer with the same engine". It is not practical "You won't win in Montreal and run Le Mans with the same engine. Surely not"