Editing Williams Racing (section)

===Honda engines (1983–1987)===
{{main|Honda in Formula One}}

====1983 season====
Frank Williams looked towards Honda, who was developing a [[Turbocharger|turbocharged]] V6 engine with [[Spirit (racing team)|Spirit]]. A deal between Honda and Williams was settled early in 1983 and the team used the engines for the 1984 season. For the {{F1|1983}} season however, Williams continued to use the Ford engine except for the last race of the year in [[1983 South African Grand Prix|South Africa]]; where [[Keke Rosberg]] finished in an impressive fifth place. The team finished fourth in the Constructors' Championship, scoring 36 points. Also, Rosberg won that year's {{F1 GP|1983|Monaco}}.

====1984 season====
For the {{F1|1984}} season, the team ran an [[Williams FW09|FW09]]. Keke Rosberg won the [[1984 Dallas Grand Prix|Dallas Grand Prix]] and finished in second at the opening race in [[1984 Brazilian Grand Prix|Brazil]]. Rosberg's new teammate, [[Jacques Laffite]], came 14th in the Drivers' Championship with five points. The team finished sixth in the Constructors' with 25.5 points, with Rosberg finishing in eighth in the Drivers' Championship.

====1985 season====
[[File:Mansell - Williams 1985.jpg|thumb|[[Nigel Mansell]]'s Williams FW10 chassis used during the {{F1|1985}} season]]
In {{F1|1985}}, [[Patrick Head|Head]] designed the [[Williams FW10|FW10]], the team's first chassis to employ the [[carbon fibre-reinforced polymer|carbon-fibre composite]] technology pioneered by McLaren. [[Nigel Mansell]] replaced Laffite to partner with Rosberg. [[Frank Dernie|Dernie]] produced another competitive aerodynamic package. The team scored four wins with Rosberg winning the [[1985 Detroit Grand Prix|Detroit]] and [[1985 Australian Grand Prix|Australian Grands Prix]], and Mansell won the {{F1 GP|1985|European}} and the {{F1 GP|1985|South African}}. Williams finished in third in the Constructors' Championship, scoring 71 points.

During qualifying for the {{F1 GP|1985|British}}, Rosberg completed a lap of the circuit in 1:05.591. The lap's average speed was {{convert|160.938|mph|km/h|abbr=on}}. This was the fastest recorded lap in Formula One history to that point.

From 1985 until 1993, Williams ran their famous yellow, blue and white [[Canon Inc.|Canon]] livery.

====1986 season====
In March 1986, Frank Williams faced the most serious challenge of his life. While returning to the airport at [[Nice]], France, after pre-season testing, he was involved in a road accident that left him paralysed. He did not return to the pit lane for almost a year.<ref>{{cite book|last=Hamilton|first=Maurice|title=Frank Williams|year=1998|publisher=Macmillan|isbn=0-333-71716-3|pages=148–153}}</ref> Despite the lack of his trackside presence, the Williams team won nine Grands Prix and the Constructors' Championship and came close to winning the Drivers' Championship with Nigel Mansell, but the British driver's left-rear tyre blew at the {{F1 GP|1986|Australian}}, the final race of the season, while his fellow championship rival and new teammate, Nelson Piquet made a pitstop shortly after Mansell's retirement as a precaution. This left [[Alain Prost]] to defend his title successfully, despite being in a slower car.

====1987 season====
[[File:Williams FW11B Honda.jpg|thumb|[[Nelson Piquet]]'s championship-winning [[Williams FW11|FW11B]] from {{F1|1987}} was the only Honda-powered Williams to win a Drivers' Championship.]]

The {{F1|1987}} season brought the Williams-Honda partnership its first and only Drivers' Championship title in the hands of [[Nelson Piquet]]. Piquet won three races and scored 73 points in the Drivers' Championship. His teammate [[Nigel Mansell|Mansell]] came in second place with six victories and 61 points. Williams won the Constructors' Championship for the second year in a row, scoring 137 points, 61 points ahead of their nearest rivals, McLaren. Despite this success, Honda ended their partnership with Williams at the end of the year in favour of McLaren.