Renault, Mercedes and Ferrari must submit their final V6 power unit designs to the FIA on Friday for them to be homologated. Despite major problems for Renault, they're not concerned about the deadline. The French manufacturer hasn't enjoyed the best of pre-season testing so far, with its customers (Red Bull, Lotus, Toro Rosso and Caterham) having completed minimal running. The supplier isn't concerned by Friday's deadline however, as a clause within the rules allows changes to be made after February 28th for "reliability, safety and cost savings". Speaking on Thursday, Remi Taffin, Renault's head of trackside operations, declared that their documents would be submitted in time to...
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