found to be underweight at the race's conclusion. Bellof's only other points-scoring finish was fourth at Silverstone, as he finished the season in ninth position on nine points. Sportscar racing While competing in Formula Two in 1982, Bellof made a one-off appearance in the World Endurance Championship at the 1000 km of Spa, partnering Rolf Stommelen at the wheel of a Kremer CK5. The pairing retired from the race on lap 51, due to a problem with the starter motor. The previous weekend, Bellof had joined Kremer to compete in the Hessen Cup at Hockenheim as part of the Deutsche Rennsport Meisterschaft, but retired with transmission failure. In 1983 Bellof joined the Rothmans-backed Porsche factory team for the World Endurance Championship driving a Porsche 956 alongside Derek Bell. Bellof and Bell won first time at the 1000 km Silverstone, beating Bob Wollek and Stefan Johansson by almost a minute, having taken the lead at half-distance, completing the race's duration at an average speed of . Bellof's pole time for the race – 1 minute, 13.15 seconds – would have put him twelfth on the grid for the later in the year. The next race on the calendar was the 1000 km Nürburgring in which Bellof rewrote several records at the Nordschleife. His pole time for that race of 6 minutes, 11.13 seconds is unofficially the fastest lap ever driven on the Nürburgring Nordschleife in its current configuration, taking pole position by five seconds, at an average speed of . Bellof also set the fastest lap during the race, with a lap time of 6 minutes, 25.91 seconds, which remains the official Nordschleife lap record for all cars. Two laps after setting the race record, on lap 20, Bellof's 956 – chassis 956-007 – flipped out of the race at the Pflanzgarten. Bellof added two more wins later in the season at Kyalami and at Fuji, as he ended the season in fourth position. He also added a win in the non-championship Norisring Trophäe race. Bellof was the dominant force in the 1984 championship driving alongside Bell, with John Watson also joining the team. Bellof also contested races with Brun Motorsport with whom he won at Imola partnering Hans-Joachim Stuck. Bell and Bellof won the opening round of the season at Monza, but only after the pairing were reinstated to the results. After crossing the line first, their 956 was promptly