TAG Turbo Engines
In the course of 1981 McLaren boss Ron Dennis began to look for a turbocharged engine for his team and approached Porsche because he felt that the company had considerable experience in turbocharging. It was agreed that Porsche would build an engine for 1983 if McLaren could find the money. At the end of that year Dennis approached Mansour Ojjeh with the intention of luring him away from Williams to join McLaren as a partner rather than a sponsor. Ojjeh saw the logic in the argument and agreed to invest $5m in the new program. Ojjeh and Dennis established TAG Turbo Engines and the new engine itself was announced in September 1982. It was unveiled at the Geneva Motor Show in early 1983 and raced for the first time at the Dutch GP in August that year.