The FIA are moving to block teams from using custom engines from 2014 instead insisting all units to all teams must be identical.

According to Germany's Auto Sport und Motor, this move was being heavily fought against by Red Bull who were hoping to include title sponsor Infiniti with the development of Renault's V6 turbo unit.

The move is to ensure that, in the case of Renault, all engines supplied to the teams are identical, i.e. the engines sent to Red Bull is the same as those sent to Toro Rosso and most likely Caterham and Lotus.

It is thought the World Motor Sport Council will agree to the rule on Friday.

It is believed Mercedes were the force behind the move. The German carmaker said permitting different specification engines for different teams would increase costs and also increase the divide between the large and small teams.

A paddock source is quoted as saying: "Infiniti can build their own engine if they want to."

Meanwhile Caterham has revealed they are close to what is being described as an "important" deal with Renault to continue supplying engines from next season.

It is an interesting story for the F1 paddock as Renault's new units are said to be the most expensive on the list of suppliers for 2014, while Caterham of course has one of the smallest budgets.

"Renault is a great partner," team boss Cyril Abiteboul told Russian website "I have worked in this company so I have complete trust.

"Additionally, we have a joint project - Caterham and Renault - so it is important that on the Formula 1 and the sports car side there is the same manufacturer.

"I can say that I am very actively pushing for Renault," he added.

The sports car Abiteboul spoke about is not said to be coming until 2016 to allow the F1 team to try and move up the grid.

"So we have time," Abiteboul continued, "and Formula 1 in this case is a marketing tool."

Asked what the shareholders might think about such a long timeframe he declared: "The shareholders are well aware of our plans and our goals."

Lotus are also said to be close to a new deal continuing with Renault power from next year.

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