 | This article needs additional citations for verification. (December 2018) |
| Ferrari Colombo engine | |
|---|---|
 Colombo engine in a 1961 250TR Spider | |
| Overview | |
| Manufacturer | Ferrari |
| Production | 1947–1988 |
| Layout | |
| Configuration | 60° V12 |
| Displacement | 1.5 L (1,497 cc) 2.0 L (1,995 cc) 2.3 L (2,341 cc) 2.6 L (2,563 cc) 3.0 L (2,953 cc) 3.3 L (3,286 cc) 4.0 L (3,967 cc) 4.4 L (4,390 cc) 4.8 L (4,823 cc) 4.9 L (4,943 cc) |
| Cylinder bore | 55 mm (2.2 in) 60 mm (2.4 in) 65 mm (2.6 in) 68 mm (2.7 in) 73 mm (2.9 in) 77 mm (3.0 in) 81 mm (3.2 in) 82 mm (3.2 in) |
| Piston stroke | 52.5 mm (2.1 in) 58.8 mm (2.3 in) 71 mm (2.8 in) 78 mm (3.1 in) |
| Cylinder block material | Aluminium |
| Cylinder head material | Aluminium |
| Valvetrain | SOHC, 24-valve DOHC, 24-valve |
| Compression ratio | 7.5:1 - 9.8:1 |
| Combustion | |
| Supercharger | Roots-type (in some versions) |
| Fuel system | Weber carburetor Bosch K-Jetronic FI |
| Fuel type | Petrol |
| Oil system | Wet sump Dry sump |
| Cooling system | Water-cooled |
| Output | |
| Power output | 116–395 hp (87–295 kW; 118–400 PS) |
| Torque output | 90–240 lb⋅ft (122–325 N⋅m) |
| Chronology | |
| Successor | Ferrari Lampredi V12 engine Ferrari flat-12 engine Ferrari F116 engine |
The Ferrari Colombo engine is a petrol fueled, water cooled, carburetted 60° V12 engine designed by Gioacchino Colombo and produced in numerous iterations by Italian automaker Ferrari between 1947 and 1988. The maker's first homegrown engine, its linear successor is the Lampredi V12,[1] which it far outlived, the last Lampredi being made in 1959.
Colombo, who had previously designed Alfa Romeos for Enzo Ferrari, placed bore centres at 90 mm apart, allowing for significant expansion. Displacements ranged from the diminutive 1,497 cc (1.5 L; 91.4 cu in) debut that powered the 125S racer to the 4,943 cc (4.9 L; 301.6 cu in) unit in the 1986 412i grand tourer. Significant updates were made in 1963 for the 330 series, featuring a redesigned block with wider, 94 mm, bore spacing.[2][3]
Enzo Ferrari had long admired the V12 engines of Packard, Auto Union, and Alfa Romeo[4] (where he was long employed), but his first car, the 1940 Auto Avio Costruzioni 815, used a Fiat derived straight-8. Development of the V12 Colombo engine continued long after Colombo had been replaced by Aurelio Lampredi as the company's marquee engine designer. Although the Lampredi V12 was a real force for the company, it was Colombo's engine which powered Ferrari to the forefront of high-performance automobiles through the 1950s and 1960s.
- ^ "Ferrari 125 S". ferrari.com. Retrieved 11 July 2019.
- ^ "Ferrari 330 GT 2+2". Ferrari. Retrieved 16 June 2015.
- ^ Shea, Terry (September 2014). "1964 Ferrari 330 GT". Hemmings Motor News. American City Business Journals. Retrieved 16 June 2015.
- ^ Acerbi, Leonardo (2006). Ferrari: A Complete Guide to All Models. Motorbooks. p. 5. ISBN 9780760325506.