Maserati 6-cylinder engine

A6G 2.0 L I-6 250 F1 2.5 L I-6
Overview
Manufacturer	Maserati
Production	1952 – 1960
Layout
Configuration	L-6
Displacement	2.0–2.5 L (122.0–152.6 cu in)
Cylinder bore	72.6–84 mm (2.86–3.31 in)
Piston stroke	75–80 mm (3.0–3.1 in)
Valvetrain	24-valve, DOHC, 4-valves per cylinder
Compression ratio	12:1-13.5:1
Combustion
Fuel system	Carburetor/Fuel injection
Fuel type	Gasoline
Cooling system	Water-cooled
Output
Power output	150–290 hp (112–216 kW; 152–294 PS)
Torque output	105–211 lb⋅ft (142–286 N⋅m) [1]
Chronology
Predecessor	Maserati 4-cylinder F1 engine

Maserati made two naturally-aspirated, straight-6, racing engines, designed for Formula One; between 1952 and 1960. 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 1954. Several of these engines, or derivatives of these engines, were also used in various Maserati sports cars. ^{[2] [3] [4] [5] [6]}

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 (120 kW) to 197 hp (147 kW). It was developed by Alberto Massimino and Vittorio Bellentani.

• Initially with a 1,987  cc (121.3  cu in ) capacity (72.6 mm × 80 mm (2.86 in × 3.15 in), with a compression ratio of 13.5 :1) delivering 160 hp (120 kW), in 1951 and 1952
• Then 1,988  cc (121.3  cu in ) capacity (75 mm × 75 mm (2.95 in × 2.95 in), with a compression ratio of 13.5 :1, with twin ignition^{[ clarification needed ]}) delivering 180 hp (130 kW), in late 1952
• And finally with a 1,970  cc (120  cu in ) capacity 76.2 mm × 72 mm (3.00 in × 2.83 in), with a compression ratio of 12 :1, with twin ignition^{[ clarification needed ]}) delivering 197 hp (147 kW), in 1953.

The engine was mated to a 4-speed gearbox. ^{[7] [8] [9] [10] [11] [12]}

Maserati 250 F1 engine

The 250F principally used the SSG 220 bhp (@ 7400 rpm) 2.5-litre Maserati A6 straight-six engine. ^{[13] [14] [15] [16] [17] [18] [19]}

Maserati 300S sports car engine

The 3.0-liter (approx 245 bhp (183 kW) 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. ^{[20] [21] [22] [23] [24] [25] [26]}

Applications

Formula 1 cars

• Maserati A6GCM
• Maserati 250F

Sports cars

• Maserati 300S

References

1. "Specifications of 50 famous racing engines up to 1994 - Page 8 - F1technical.net". www.f1technical.net.
2. "Engine Maserati • STATS F1". www.statsf1.com.
3. "Maserati 250F - F1technical.net". www.f1technical.net.
4. "Maserati 250F". May 19, 2010.
5. "1957 Maserati 250 F | Maserati". April 17, 2016.
6. "1954 - 1956 Maserati 250F - Images, Specifications and Information". Ultimatecarpage.com.
7. "1954 Maserati A6GCS By Fiandri & Malagoli @ Top Speed". Top Speed. December 23, 2019.
8. "1947 - 1952 Maserati A6GCS - Images, Specifications and Information". Ultimatecarpage.com.
9. "1952 Maserati A6GCM Specifications". Ultimatecarpage.com.
10. "1952 Maserati A6GCM full range specs". www.automobile-catalog.com.
11. "1951 Maserati A6GCM | Maserati". April 18, 2016.
12. "The Maserati A6 Part II". www.maserati-alfieri.co.uk.
13. "1954 Maserati Tipo 250F". historicautopro.
14. "The birth of an icon - Car profile: Maserati 250F". ESPN UK.
15. "1954 Maserati 250 F Formula 1 full range specs". www.automobile-catalog.com.
16. "1957: Maserati 250F". antonio_eiras.
17. "Bonhams : Maserati 250F Monoposto Child Car". www.bonhams.com.
18. "1954 Maserati 250F Wallpapers". WSupercars. August 22, 2014.
19. "Motor1.com Legends: Maserati 250F". Motor1.com.
20. "1955 - 1958 Maserati 300S - Images, Specifications and Information". Ultimatecarpage.com.
21. Murphy, William (July 12, 2008). "1956 Maserati 300S". Simeone Foundation Automotive Museum.
22. "1957 Maserati 300s". Redline.
23. "1955 Maserati 300S | Maserati". April 18, 2016.
24. "1957 Maserati 300 S Grand Prix full range specs". www.automobile-catalog.com.
25. "Full performance review of 1957 Maserati 300 S (man. 4) model for Europe North America racing/rallye". www.automobile-catalog.com.
26. "1956 - 1958 Maserati 300s @ Top Speed". Top Speed. March 6, 2006.