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4CLT 1.5 L I-4 250S 2.5 L I-4 Tipo 6-1500 1.5 L I-4 4CF2 1.5 L I-4 42CF 2.0 L I-4
Overview
Manufacturer	Maserati
Production	1950–1951, 1959–1963
Layout
Configuration	L-4
Displacement	1.5–2.5 L (91.5–152.6 cu in)
Cylinder bore	78 mm (3.1 in)
Piston stroke	78 mm (3.1 in)
Valvetrain	16-valve, DOHC, 4-valves per cylinder
Compression ratio	6:1-6.5:1
Combustion
Fuel system	Carburetor/Electronic fuel injection
Fuel type	Gasoline
Cooling system	Water-cooled
Output
Power output	150–280 hp (112–209 kW; 152–284 PS)
Torque output	approx. 105–210 lb⋅ft (142–285 N⋅m)
Dimensions
Dry weight	165 kg (364 lb)
Chronology
Successor	Maserati 6-cylinder F1 engine

Maserati has made three inline-4 racing engines, that were designed for both Formula One and Sports car racing. Their first engine was the supercharged 4CLT engine in 1950; with the 1.5 L engine configuration imposed by the FIA for engines with forced induction. Their second engine was the naturally-aspirated 250S engine; with the 2.5 L engine configuration, and was used by Cooper and JBW. Their third and final engine was the naturally-aspirated Tipo 6-1500; with the 1.5 L engine configuration, and the customer engine was used by Cooper, Emeryson, Lotus, and E.N.B. teams.

A 1.5 L (92 cu in) version of the engine was used in the Maserati 150S, (as well as the Maserati 150 GT concept car) and a 2.0 L (120 cu in) version of this engine was also used in the 1955-1959 Maserati 200S sports car.

References

1. "Specifications of 50 famous racing engines up to 1994 - Page 4 - F1technical.net". www.f1technical.net.
2. "1947 - 1950 Maserati 4CLT Specifications". Ultimatecarpage.com.
3. "Maserati 4CLT". June 22, 2012.
4. "1948 Maserati 4CLT/48 | Maserati". April 18, 2016.
5. "Engine Maserati - Stats F1". Retrieved 28 June 2022.
6. "1957 Maserati 150 GT Spider: A race-bred prototype". www.classicdriver.com.
7. "1957 Maserati 150 GT". conceptcarz.com.
8. "1957 Maserati 150GT Prototipo | Maserati". April 17, 2016.
9. "1955 - 1956 Maserati 150S - Images, Specifications and Information". Ultimatecarpage.com.
10. "1956 Maserati 150 S technical and mechanical specifications". conceptcarz.com.
11. "1957 Maserati 150S Barchetta". Retrieved 28 June 2022.
12. "1955 Maserati 150 S full range specs". www.automobile-catalog.com.
13. "Maserati 200SI". www.maserati-alfieri.co.uk.
14. "Ringing in the day with a stunning ex-works Maserati 200S". www.classicdriver.com.
15. "1956 Maserati "Tipo 52" 200 S". historicautopro.
16. "1955 - 1956 Maserati 200S - Images, Specifications and Information". Ultimatecarpage.com.
17. "1957 Maserati 200 SI". conceptcarz.com.
18. "Maserati 200S group S (1955) - Racing Cars". tech-racingcars.wikidot.com.

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