Maserati 6-cylinder engine

Maserati made two naturally-aspirated, straight-6, racing engines, designed for Formula One; between and. The first engine was the 2.0-liter A6G; in accordance with the engine regulations imposed by the FIA. Their second and last engine was the 250 F1; in accordance with the engine regulations imposed by the FIA for. Several of these engines, or derivatives of these engines, were also used in various Maserati sports cars.

Maserati A6GCM engine
The inline 6-cylinder two-liter engine with DOHC and 12 valves, 3 two-barrel (twin choke) Weber carburetors delivered 160 hp to 197 hp. It was developed by Alberto Massimino and Vittorio Bellentani. The engine was mated to a 4-speed gearbox.
 * Initially with a 1987 cc capacity (72.6 x, with a compression ratio of 13.5 :1) delivering 160 hp, in 1951 and 1952
 * Then 1988 cc capacity (75 x, with a compression ratio of 13.5 :1, with twin ignition) delivering 180 hp, in late 1952
 * And finally with a 1970 cc capacity 76.2 x, with a compression ratio of 12 :1, with twin ignition) delivering 197 hp, in 1953.

Maserati 250 F1 engine
The 250F principally used the SSG 220 bhp (@ 7400 rpm) 2.5-litre Maserati A6 straight-six engine.

Maserati 300S sports car engine
The 3.0-liter (approx 245 bhp at 6200 rpm) engine used in the Maserati 300S was based on the Straight-6 design of the Maserati 250F and incorporated a lengthened stroke developed by Vittorio Bellentani to increase the capacity from the original 2.5-litres. The compression ratio was reduced from 12:1 to 9.5:1, partly due to the FIA regulations requiring the engine to be run on road car fuel. It used three Weber carburetors.

Formula 1 cars

 * Maserati A6GCM
 * Maserati 250F

Sports cars

 * Maserati 300S