Honda has played down suggestions it is planning to go into partnership with another F1 team, saying it isn't ready to supply a second outfit with its engines.

The Japanese firm returned to the sport this year as the engine supplier for the McLaren team, but the collaboration has been characterised by ongoing struggles for competitiveness and, especially, reliability.

Despite this, Honda has been linked with supplying engines to a second team as a means of allowing McLaren to place its reserve driver Kevin Magnussen - who raced with the team in 2014 - and GP2 Series leading development driver Stoffel Vandoorne in F1 seats.

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However, though Honda hasn't ruled out the possibility of widening its stretch across the grid, its struggles to bring the current power unit up to speed appears to put any imminent expansion on hold.

"It is a good idea, but we don't have any such kind of plan," said Honda motorsport boss Yasuhisa Arai. "I concentrate it on the McLaren Honda one team, that's it.

"I do agree," added Eric Boullier. "I think this project has not started enough to take over a second team. I think there are a lot of jobs that can be done on dynos before we think of having the distraction of a second team."

Honda has been recently linked with a potential supply to the Manor team in 2015 given Ferrari will be increasing its supply to accommodate the incoming Haas outfit next year.