Honda's F1 engine, the RA271E, was designed by Tadashi Kume and built in the very same facility as the car, perfect for design purposes. This was the same for teams such as Ferrari and Porsche, who also built their engines in-house, unlike others such as Lotus and Brabham, who had to bring in their engines from outside sources.

The RA271E was a normally aspirated unit with twelve cylinders in a 'V' formation. The design featured twelve separate exhausts, six on each side of the body, which made the car very distinctive, unlike the 'four-into-one' layout preferred by the V8 teams. The engine was water-cooled with nose-mounted radiators.

The engine dimensions of the 1965 48-valve V12 were 58.1 x 47.0 mm, 1,495.28 cc. Power output of 230 bhp (170 kW) @ 13,000 rpm was quoted – this was the most powerful F1 engine of 1965.

The engine was safe to 14,000 rpm. Since the 1967 4-cylinder 498.57 cc engine (57.5 x 48.0mm) eventually gave almost 90 bhp (67 kW) at 12,600 rpm, the V12 had the potential of 270 bhp (200 kW) with further development. It used 12 Keihin carburettors, one for each cylinder, later to be replaced by low pressure fuel injection before entry into the Italian GP.

Honda also built their own gearbox for the project, a six-speed sequential shift box.

HONDA RA271E

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F1_Honda_RA271 (1964)

Type: RA271E (A-series)

Year: 1964

Number of cylinders: 12

Configuration: 60° vee

Capacity: 1495

RPM: 11000

Power: 220 bhp


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