F1: The return of turbo engines in 2012?

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From GMMIn the current trackside discussions about possible new Formula 1 rules for the near future, some F1 teams are pushing for a radical change on the engine front.According to the largest Austrian daily, Kronen Zeitung, Renault and also BMW are fully behind the push for small turbo-charged engines for the 2012 season and beyond.The newspaper said those teams have proposed a 1.5 litre capacity for the turbos, with a 1.5-bar boost.Ferrari's current reliability problems aside, it is no surprise the Italian marque's rivals are pushing for the end to the current 2.4 litre normally aspirated V8 era.One key speed trap at the Valencia circuit last weekend captured Sebastien Bourdais (313kmh), Kimi Raikkonen (313), Sebastian Vettel (313), Felipe Massa (312) and Adrian Sutil (311) monopolising the top five positions in terms of sheer top-end grunt.All of the aforementioned drivers use Ferrari engines.