Nico Hulkenberg is sure his participation at Le Mans in June and the Six Hours of Spa-Francorchamps this weekend will not have a negative impact on his F1 campaign with Force India this year.

Hulkenberg has signed for Porsche to drive in two World Endurance Championship rounds alongside his F1 commitments. He tested the 919 Hybrid earlier this year and will take part in his first race with the team at Spa this weekend.

"Obviously before I took the Porsche deal last year I was thinking about these things and I wouldn't have taken on the deal if I thought it would compromise my F1 career," he said. "I was testing in Bahrain in the middle of February and then in Barcelona and of course there are a couple of laps adaptation, but I'm settled enough now in F1 and have that feeling enough inside my brain and body that I can swap without readapting or taking too long."

Hulkenberg's Porsche features a four-cylinder turbocharged engine producing in excess of 500bhp and KERS capable of upping the power output by more than 400bhp. The KERS operates through the front axle, making the car four-wheel drive, and Hulkenberg said that was one of the biggest differences to the F1 car from behind the wheel.

"From the hybrid system point of view you don't feel it too different, but the Porsche is obviously four-wheel drive and that's the major game changer."

Porsche finished second at the opening round of this year's WEC after a thrilling battle for victory with Audi and Toyota, but Hulkenberg was unable to follow the action.

"I was actually travelling and leaving China. I watched a bit of live timing but when we took off I couldn't finish the race."