(2.400cc normally aspirated)
Speeds were increasing dangerously (Juan Pablo Montoya touched 374kph at Monza straight). Something needed to be done to hold the F1 cars performance. The solution was to simply take 2 cylinders away of the V10, reducing their capacity 20%. It wasn’t costly for manufacturers and teams. Besides, it was thought that the aerodynamic development could compensate some power loss. All main measures were strictly controlled (minimum weight, stroke, bore, materials allowed), which left little space to creativity. Details like fuel/lubricants were the only capable of making a slight difference.
Fact is that three different engines had their moments of glory in that period. Refueling was prohibited from 2010 onwards to emphasize the competition and the importance of the aero-package. It started with Fernando Alonso and the Renault, jumped to Kimi Räikkönen (Ferrari), Lewis Hamilton (Mercedes). It was a combination of Adrian Newey’s genius, Sebastian Vettel’s talent and the Renault Formula One engine that made Red Bull unbeatable from 2010 to 2013. Engines used to deliver up to 780hp.