Subaru 1235

Subaru 1235
Overview
Manufacturer	Motori Moderni
Production	1989–1990
Combustion chamber
Configuration	60-valve B12
Displacement	3,500 cc (213.6 cu in)
Combustion
Management	Magneti Marelli
Output
Power output	417–447 kW (559–599 hp; 567–608 PS)
Dimensions
Dry weight	159 kg (351 lb)

The Subaru 1235 was a motor racing engine designed and built by Motori Moderni for Subaru's Formula One program in 1990. A 3.5-litre boxer-12, it was used by the Coloni team for the first eight races, but proved to be very unsuccessful and the team reverted to using the old Cosworth DFR V8 engine. Alba also used it in the World Sportscar Championship in 1990, but were similarly unsuccessful and switched to a 4.5-litre Buick V6 midway through the season.

After seeing fellow Japanese manufacturers Yamaha and Honda enter Formula One as engine suppliers, Subaru decided to follow suit in 1989. They contracted the Italian firm Motori Moderni to build the engine for them; Motori Moderni had previously built a turbocharged V6 engine during the turbo era in the mid 1980s. This engine had been primarily used by the Minardi team from 1985 to 1987, although AGS briefly used it in 1986, but never saw any real success. For Subaru, Motori Moderni came up with a 3.5-litre, 60-valve flat-twelve engine in the boxer configuration that the Japanese firm's road cars utilised. Although the flat-twelve design had proven successful for Ferrari in the mid-to-late-1970s in their multiple championship-winning 312T series of cars, it had fallen out of favour from 1980 onwards due to the advent of the ground effects cars, which the wide flat engine configuration did not suit.

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