Maserati 4-cylinder engine

{{Infobox automobile engine

|name=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

|configuration=L-4

|manufacturer={{flagicon|Italy}} Maserati

|production={{F1|1950}}–{{F1|1951}}, {{F1|1959}}–{{F1|1963}}

|fueltype=Gasoline

|compression=6:1-6.5:1

|fuelsystem=Carburetor/Electronic fuel injection

|coolingsystem=Water-cooled

|bore={{convert|78|mm|abbr=on}}

|stroke={{convert|78|mm|abbr=on}}

|displacement={{convert|1.5-2.5|L|cuin|1|abbr=on}}

|valvetrain=16-valve, DOHC, 4-valves per cylinder

|power={{Convert|150-280|hp|kW PS|0|abbr=on}}

|torque=approx. {{Convert|105-210|lbft|Nm|0|abbr=on}}

|successor=Maserati 6-cylinder F1 engine

|weight={{convert|165|kg|abbr=on}}{{Cite web|url=https://www.f1technical.net/forum/viewtopic.php?f=4&t=27760&start=45|title=Specifications of 50 famous racing engines up to 1994 - Page 4 - F1technical.net|website=www.f1technical.net}}

}}

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 {{F1|1950}}; with the 1.5 L engine configuration imposed by the FIA for engines with forced induction.{{Cite web|url=https://www.ultimatecarpage.com//spec/761/Maserati-4CLT.html|title=1947 - 1950 Maserati 4CLT Specifications|website=Ultimatecarpage.com}}{{Cite web|url=https://sportscardigest.com/maserati-4clt/|title=Maserati 4CLT|date=June 22, 2012}}{{Cite web|url=https://www.supercars.net/blog/1948-maserati-4clt48/|title=1948 Maserati 4CLT/48 | Maserati|date=April 18, 2016}} 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.{{cite web|url=https://www.statsf1.com/en/moteur-maserati.aspx|title=Engine Maserati - Stats F1|access-date=28 June 2022}}

A {{cvt|1.5|L|cuin}} version of the engine was used in the Maserati 150S, (as well as the Maserati 150 GT concept car{{Cite web|url=https://www.classicdriver.com/en/article/cars/1957-maserati-150-gt-spider-race-bred-prototype|title=1957 Maserati 150 GT Spider: A race-bred prototype|website=www.classicdriver.com}}{{Cite web|url=https://www.conceptcarz.com/z22329/maserati-150-gt.aspx|title=1957 Maserati 150 GT|website=conceptcarz.com}}{{Cite web|url=https://www.supercars.net/blog/1957-maserati-150gt-prototipo/|title=1957 Maserati 150GT Prototipo | Maserati|date=April 17, 2016}}){{Cite web|url=https://www.ultimatecarpage.com/car/556/Maserati-150S.html|title=1955 - 1956 Maserati 150S - Images, Specifications and Information|website=Ultimatecarpage.com}}{{Cite web|url=https://www.conceptcarz.com/s23448/maserati-150-s.aspx|title=1956 Maserati 150 S technical and mechanical specifications|website=conceptcarz.com}}{{cite web|url=https://www.supercars.net/blog/1955%E2%86%921957-maserati-150s-barchetta/|title=1957 Maserati 150S Barchetta|access-date=28 June 2022}}{{Cite web|url=https://www.automobile-catalog.com/make/maserati/150_s/150_s/1955.html|title=1955 Maserati 150 S full range specs|website=www.automobile-catalog.com}} and a {{cvt|2.0|L|cuin}} version of this engine was also used in the 1955-1959 Maserati 200S sports car.{{Cite web|url=http://www.maserati-alfieri.co.uk/alfieri190.htm|title=Maserati 200SI|website=www.maserati-alfieri.co.uk}}{{Cite web|url=https://www.classicdriver.com/en/article/cars/ringing-day-a-stunning-ex-works-maserati-200s|title=Ringing in the day with a stunning ex-works Maserati 200S|website=www.classicdriver.com}}{{Cite web|url=https://www.historicautopro.com/maserati-200s|title=1956 Maserati "Tipo 52" 200 S|website=historicautopro}}{{Cite web|url=https://www.ultimatecarpage.com/car/863/Maserati-200S.html|title=1955 - 1956 Maserati 200S - Images, Specifications and Information|website=Ultimatecarpage.com}}{{Cite web|url=https://www.conceptcarz.com/vehicle/z11192/maserati-200-si.aspx|title=1957 Maserati 200 SI|website=conceptcarz.com}}{{Cite web|url=http://tech-racingcars.wikidot.com/maserati-200s|title=Maserati 200S group S (1955) - Racing Cars|website=tech-racingcars.wikidot.com}}