Motori Moderni

Motori Moderni was a Formula One engine manufacturer from 1985 until the end of 1987. It was established in Novara by Italian engine designer Carlo Chiti.
Chiti, a former Ferrari, Automobili Turismo e Sport and Alfa Romeo Formula One chief designer, founded Motori Moderni with the idea of supplying custom turbocharged V6 engines, also known as Tipo 615-90, to Formula One teams. The engines were used by Minardi in Formula One from to and by AGS in.

V6 Turbo

1985

Motori Moderni's power unit debuted at the 1985 San Marino Grand Prix with the newly born Minardi Formula One team. Rookie Pierluigi Martini qualified the M185 19th on the grid but was forced to retire after 14 laps. Martini failed to score a point in 1985 with a best finish of 8th and last in the season-ending Australian Grand Prix. The Motori Moderni engine weighed in at and produced in race trim, with another 100 horsepower possible for qualifying. This compared unfavourably to the approximately of the Renault, Honda and BMW turbo engines, and the of the TAG-Porsche and Ferrari engines. At Silverstone for the British Grand Prix, Martini was 8.054 seconds slower than Keke Rosberg's pole-winning Williams-Honda. At the Österreichring in Austria he was 11.2 seconds slower than Alain Prost's McLaren TAG-Porsche, while at Monza in Italy he was 8.8 seconds slower than Ayrton Senna's Lotus-Renault.

1986

In 1986, as the Minardi team expanded to running two cars, Martini was replaced with Andrea de Cesaris, and paired with F1 rookie Alessandro Nannini, who showed his class by often outpacing his more experienced countryman. Again, no points were scored with the Motori Moderni engines rated at approximately next to the leading Honda, BMW, Ferrari, Renault and TAG-Porsche units which were producing well over in race trim.
The AGS team was Motori Moderni's second customer. The team only participated in two races during the 1986 season, with Ivan Capelli retiring from both the Italian and Portuguese Grands Prix.

1987

1987 would be the last season the Motori Moderni engine would be used in Formula One. Minardi, who had retained Nannini after an impressive debut season, replaced de Cesaris with Spanish driver Adrián Campos. Once more no points were scored throughout the season, despite some spirited drives by Nannini which only resulted in 11th-placed finishes in Hungary and Portugal. The engines, now rated at after the introduction of the FIA's mandatory pop-off valve aimed at limiting the turbos power to 4.0 bar, were often struggling against the V8 Cosworth DFZ powered cars.
At the 1987 Australian Grand Prix in Adelaide, Nannini qualified an impressive 13th on the grid only 3.434 behind Gerhard Berger's pole-winning Ferrari. Unfortunately, his race only lasted a few hundred metres as he was pushed into the fence just out of the chicane after the start. Campos qualified 26th and last, with his race ending with transmission failure after 46 of the scheduled 82 laps.
With being the final year for the turbos in Formula One, Motori Moderni pulled out of the sport at the end of 1987 rather than try to adapt the engine for an even lower pop-off valve limit of 2.5 bar and a lower fuel limit of just 150 litres. As a result, Minardi switched to the Cosworth DFZ engine in 1988.

Subaru

In late 1988 Chiti was commissioned by Subaru to design a new 12-cylinder boxer engine, known as the 1235 for the new 3.5-litre normally aspirated F1 regulations. This was briefly tested by Minardi in 1989 but rejected due to low power and excessive weight. The Japanese car company then bought the Coloni Racing Car Systems|Coloni] team but withdrew and sold the team back to Enzo Coloni at the end of the season. The engine was later adopted in the 1989 Jiotto Caspita prototype sports car before it was used by Subaru for the 1990 season.

Sportscar racing

After abandoning Formula One, the flat-12 engines were deployed in the Alba Racing Team's AR20 entry in the 1990 World Sportscar Championship, but failed to start any rounds before being replaced by a more conventional 4.5-litre engine from Buick.