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The first engine to bear the Hart name alone was the twin-cam, four-cylinder Hart 420R F2 unit, which appeared in 1976 and powered race-winning cars until the end of the decade. In 1978, the Toleman team agreed to a partnership program, with Toleman providing finance to develop further Hart engine designs.
The first engine to bear the Hart name alone was the twin-cam, four-cylinder Hart 420R F2 unit, which appeared in 1976 and powered race-winning cars until the end of the decade. In 1978, the Toleman team agreed to a partnership program, with Toleman providing finance to develop further Hart engine designs. The fruits of this collaboration ...
The arrival in F2 of BMW and Renault left Ford reluctant to increase its involvement, so Hart chose to develop his own F2 engine - the 420R - which was first raced in a Chevron sportscar in 1976. This engine was a race winner in F2 in 1977 and 1978.
The Chevron B31 was a sports prototype racing car built by Chevron Cars Ltd in 1975, and initially used in the European 2-Litre Championship.The car was an evolution of the Chevron B26, and was initially fitted with a 2-litre Hart 420R straight-four engine producing 290 hp (216.3 kW; 294.0 PS). [1]
It was powered by the 305 hp (227 kW) Hart 420R 2.0 L (120 cu in) four-cylinder engine, which droves the rear wheels via a Hewland F.T.200 5-speed manual transmission. After Formula 2 racing, it was later converted into a Can-Am -style prototype , and used in the European-based Interserie series.
Engine: BMW M12/7/Ford-Cosworth BDG/Hart 420R 2.0 L (122.0 cu in) DOHC I4, naturally-aspirated, mid-engined: Transmission: Hewland FT200 5-speed manual: Power:
It was mainly powered by the BMW M12/7, but also Hart 420R, which were both 2.0 L (120 cu in) four-cylinder engines. [1] [2] As with other models, it was later decided to convert the car and chassis to a closed-wheel sports prototype, and was used in the revived American Can-Am series, between 1981 and 1984.
Even the Ferrari engine returned briefly with minimal success. The Hart 420R (ultimately derived from the Cosworth BDA) was briefly successful in Marches and Team Surtees won the European F2 Championship in 1972 with Hart engines, driver Mike Hailwood, but most notably in the works Toleman team's cars.