for the LM P1 and LM P2 categories Analysis of the performances of the diesel-engined and petrol-engined prototypes after the Sebring and Barcelona races showed that the diesel-engined cars still enjoyed an advantage.
In order to guarantee the equivalence between the different engines, the ACO, in keeping with its undertakings, has decided to impose the following adjustments on diesel-engined prototypes from the Spa-Francorchamps race onwards:
> Reduction of the orifice of the fuel flow limiter of the autonomous fuel tank (the current diameter of 38mm for diesels will now be the same as that for petrol-engined cars: 33mm). > An additional 30 kilos will be added made up of one or more pieces of ballast sealed by the scrutineers. Once the ballast has been removed the car must not weigh less than 900 kilos.
Clarification: The technical regulations governing the LM P1 and LM P2 prototypes oblige manufacturers to homologate the car or the modifications of the characteristics mentioned on the homologation sheet before an event.For the Spa-Francorchamps race on 8th May, the delay between: - the homologation of a new car and the start of the event (preliminary scrutineering) must be 30 days minimum.- the homologation of modifications of characteristics mentioned on the homologation sheet and the start of the event (preliminary scrutineering) must be 15 days minimum.