1971 Grand Prix motorcycle racing season Jack Findlay's victory at the 1971 Ulster Grand Prix not only marked the first victory for a Suzuki motorcycle in the premier 500cc class, but also the first-ever 500cc class victory for a motorcycle powered by a two stroke engine. Kawasaki won their first 500cc class victory at the season ending Spanish Grand Prix at Jarama when Dave Simmonds won the race after Agostini sat out the event after already winning the championship. The inaugural Austrian Grand Prix was held at the new high-speed Salzburgring. Points were awarded to the top ten finishers in each race. Only the best of
1983 Brazilian Grand Prix Lotus 93T, but switched to the team's spare car, a Cosworth DFV-powered Lotus 92, when the Renault unit failed on the warm-up lap. This was deemed illegal and so he was disqualified. Rosberg was disqualified for a push start in the pits, after his car momentarily caught fire during refueling. It was the second consecutive Brazilian Grand Prix in which Rosberg was disqualified from second place. Curiously, the drivers finishing behind him were not promoted, so the six points for second place were officially not awarded. 1983 Brazilian Grand Prix The 1983 Brazilian Grand Prix was a Formula One motor