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In 1985 The RA165E engine is developed from the ground up in only six months, and is introduced halfway through the season and immediately received positive reviews from Rosberg and team mate Nigel Mansell. Rosberg and Mansell both claimed top six finishes on the engine's debut in Canada, with Rosberg taking the chequered flag at the Detroit Grand Prix to record the second victory for a Honda turbo V6.  Rosberg and Mansell won the final three races of the season to establish Williams-Honda as the team to beat in 1986, a season which saw Nelson Piquet replace Rosberg.

Williams-Honda takes third place in the Constructors' Championship.

1986 Honda introduces cutting edge car-to-pit telemetry technology, consisting of car-based transceivers relaying data direct to the garage which made Williams-Honda the first team ever to be able to analyse engine performance in real-time during races. This system was immediately adopted by other F1 teams.

Williams-Honda went on to win Constructors' Championship.


Nigel Mansell  Williams FW10 (1985)

Type: RA165E

Year: 1985

Number of cylinders: 6

Configuration: 80° vee, DOCH 4-valve, twin turbo

Capacity: 1494

RPM: 12000

Power: 800 bhp

F1_Honda RA165E (1985