Maserati 6-cylinder engine

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A6G 2.0 L I-6
250 F1 2.5 L I-6
Overview
ManufacturerItaly Maserati
Production1952–1960
Layout
ConfigurationL-6
Displacement2.0–2.5 L (122.0–152.6 cu in)
Cylinder bore72.6–84 mm (2.86–3.31 in)
Piston stroke75–80 mm (3.0–3.1 in)
Valvetrain24-valve, DOHC, 4-valves per cylinder
Compression ratio12:1-13.5:1
Combustion
Fuel systemCarburetor/Fuel injection
Fuel typeGasoline
Cooling systemWater-cooled
Output
Power output150–290 hp (112–216 kW; 152–294 PS)
Torque output105–211 lb⋅ft (142–286 N⋅m)[1]
Chronology
PredecessorMaserati 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[edit]

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[edit]

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[edit]

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[edit]

Formula 1 cars[edit]

Sports cars[edit]

References[edit]

  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.
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