Alfa Romeo 12-cylinder engine explained

Alfa Romeo 12-cylinder engine
Configuration:	60°-180° V-12/flat-12
Manufacturer:	Alfa Romeo
Production:	1973–1982
Fueltype:	Gasoline
Fuelsystem:	Mechanical fuel injection (Sports cars) Electronic fuel injection (Formula 1 cars)
Turbocharger:	KKK Twin-turbocharged (Sports cars) Naturally aspirated (Formula 1 cars)
Coolingsystem:	Water-cooled
Displacement:	2134cc 2995cc 2991cc
Bore:	771NaN1 78.51NaN1
Stroke:	38.21NaN1 53.61NaN1 51.51NaN1
Valvetrain:	48-valve (four-valves per cylinder), DOHC
Power:	NaN0NaN0
Torque:	NaN0NaN0
Compression:	11.0:1-12.0:1^[1]
Weight:	1751NaN1
Predecessor:	Tipo 33 engine
Successor:	890T

Alfa Romeo made a series of 2.1-litre to 3.0-litre, naturally-aspirated and turbocharged, V-12 and flat-12, Grand Prix and Sports car racing engines designed for Formula One, the World Sportscar Championship, Can-Am, the Nordic Challenge Cup, and Interserie; starting in 1973, with their Alfa Romeo 33TT12 Group 5 sports car.^[2] This was followed by the twin-turbocharged Alfa Romeo 33SC12 Group 6 engine in 1976,^{[3] [4] [5]} and shortly after, Brabham as an engine supplier in ; before entering Formula One themselves in . Their first was a Carlo Chiti-designed Alfa Romeo flat-12 engine (essentially a 180° V-12) which had been used earlier in the Alfa Romeo 33TT12 and 33SC12 sports cars. In this engine was supplied to Brabham and the deal continued until . The engine was dubbed the 115-12, and was a 180° V12 engine; essentially making it a flat-12 engine.^{[6] [7] [8]} Their second 12-cylinder engine, dubbed the 1260, debuted at the 1979 Italian Grand Prix. This time, the engine configuration was a conventional 60° V-12, rather than a flat layout.

Applications

Formula 1 cars

• Brabham BT45
• Brabham BT46
• Alfa Romeo 177
• Alfa Romeo 179
• Alfa Romeo 182

Sports cars

• Alfa Romeo Tipo 33^{[9] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19] [20] [21] [22] [23] [24] [25]}

Notes and References

1. Web site: Specifications of 50 famous racing engines up to 1994 - Page 17 - F1technical.net .
2. Web site: Engine Alfa Romeo • STATS F1. statsf1.com. 2021-10-11.
3. Web site: Tipo 33 SC 12 Turbo.
4. Web site: Alfa Romeo Tipo 33 TT 12. 18 October 2019.
5. Web site: Alfa Romeo Tipo 33/SC/12. 10 February 2021.
6. Web site: 1979 Alfa Romeo V12 Formula 1 Engine - Tipo 1260. silodrome.com. 28 February 2018. 2021-10-11.
7. Web site: Bonhams : An F1 1979 Alfa Romeo Tipo 1260 V12 Engine No. 22, together with Transaxle. bonhams.com. 2021-10-11.
8. Web site: The Ex Adrea de Cesaris 1982 Alfa Romeo 182. 2015-06-18. 2021-10-11.
9. Web site: Alfa Romeo Tipo 33 TT 12.
10. Web site: 1973 - 1975 Alfa Romeo 33/TT/12 - Images, Specifications and Information.
11. Web site: 1975 Alfa Romeo Tipo 33 TT 12. 27 July 2008.
12. Web site: Alfa Romeo Tipo 33 - Car Profile. 21 March 2008.
13. Web site: 1974 Alfa Romeo 33 TT 12 technical and mechanical specifications.
14. Web site: 1974 Alfa Romeo Tipo 33 TT 12.
15. Web site: 1974 Alfa Romeo Tipo 33 TT 12. 25 June 2021.
16. Web site: The Alfa Romeo 33SC12 Makes a Furious Flat-12 Noise. 10 April 2019.
17. Book: Alfa Romeo Tipo33: The Development, Racing, and Chassis History. 9781904788713. Collins. Peter. McDonough. Ed. 18 March 2006.
18. Web site: Bonhams : 1974 Alfa Romeo Tipo 33 TT 12 Chassis no. AR11512*010* Engine no. 11512 071.
19. Web site: Alfa Romeo 33 Stradale: Eternal Beauty. 26 April 2019.
20. Web site: 1977 Alfa Romeo 33/SC/12 Turbo - Images, Specifications and Information.
21. Web site: Alfa Romeo 33SC 12 Turbo Last of the T33s.
22. Web site: 1975 Alfa Romeo 33-3 TT12 | Alfa Romeo. 3 April 2016.
23. Web site: Alfa Romeo Tipo 33 SC12 group 6 (1977) - Racing Cars.
24. Web site: Classic: Alfa Romeo Tipo 33 - Winding Road.
25. Web site: Winning Lineage: The Alfa Romeo Tipo 33 Competition Cars. 22 December 2017.