Fernando Alonso is confident his waning championship charge will not be further impeded by running through his allocation of engines.

This week’s Monza event is among the toughest on engines, and at Spa-Francorchamps two weeks ago, the newly-installed Ferrari V8 in Pedro de la Rosa’s Sauber had to be replaced.

The unscheduled change tipped the Spaniard over his allocation of eight engines for the season, resulting in a grid penalty.

And a look at the allocations of F1′s other cars at Spa showed that while most drivers are now on their fifth new engine, Ferrari’s Alonso and Felipe Massa have used six.

“I see no reason to worry,” said team boss Stefano Domenicali before leaving Belgium.

And Spaniard Alonso has now told GPWeek: “We are confident.

“The plan of the engines is well in control at the moment.  Fingers crossed everything stays like this and we know the programme for all the remaining races,” he added.

“It should be enough with the engines we have.  If everything goes normal there is no problem.”

A bigger headache for the Italian team is that, with Alonso more than 40 points behind with just six races left to run, the F10 seemed to take a competitive step backwards at Spa-Francorchamps two weeks ago.

“Monza will be a very important race, because the championship is not looking so easy for us,” admitted the Spaniard’s teammate Felipe Massa.

Christian Horner has played down fears Red Bull might be suffering a fundamental problem with its RB6 car.

Mark Webber lost his front row starting place in Canada due to an unscheduled gearbox change penalty, and his teammate Sebastian Vettel finished the Montreal race with a gearbox problem.

German Vettel, 22, left the American continent insisting there is “no reason to panic” about the latest apparent reliability flaw, but he will drive on the streets of Valencia this weekend with the same gearbox.

Like Webber in Canada, an unscheduled change will cost him five grid places.

But team boss Horner told Germany’s Auto Bild: “They were both different problems.  We do not have a fundamental problem with the car.”

And despite suggestions McLaren could be set to dominate again at Valencia, Red Bull will have a refined F-duct on the RB6.

“We expect some new parts and a step forward,” said Vettel.

Jun.13 (GMM)  Mark Webber has fallen off the front row of the grid for Sunday’s Canadian grand prix.

It has emerged from the Circuit Gilles Villeneuve that the Australian, who qualified behind pole sitter Lewis Hamilton but ahead of his Red Bull teammate Sebastian Vettel, has had to have a last-minute gearbox change.

The unscheduled change results in a grid demotion of five places.

Webber, 33, will now start the Montreal race from seventh.