Ferrari Colombo 275 (1964)
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Specifications

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1964: Colombo 275 Tipo 211
1965: Colombo 275 Tipo 213
1965: Colombo 275 P2
1967: Colombo 275 Tipo 226

Dimensions

Cylinders arrangement: V12 with 60ยบ included angle
Strokes: 4
Bore x Stroke: 77.0 mm x 58.8 mm, 3.031" x 2.315"
Capacity: 3286cc, 200ci
Individual cylinder capacity is 275cc, thus the name of the engine

Construction materials

Silumin block with cast iron cylinder liners
Aluminium alloy head
Steel crankshaft with 7 main bearings
Steel connecting rod

Cylinder-head

Single overhead camshaft (SOHC), chain driven
Double overhead camshaft (DOHC), chain driven
2 valves per cylinder - 24 valves total

Aspiration

Natural
1964 Tipo 211: 6 x Weber 38 DCN Carburetors, SOHC
1965: 6 x Weber DCN/2 Carburetors, DOHC
1965 Tipo 213: 3 x Weber 40 DCN/3 or 6 x Weber 40 DCZ/6 or 6 x Weber 40 DCN3 Carburetors, SOHC
1965 Tipo 226: 6 x Weber DCN 9 Carburetors, DOHC

body of carburetor is aluminum (DCL) or zinc (DCZ)
Click here for DCNF manual

Ignition

Single spark plug per cylinder, 2 ignition coils, Firing order 1 - 12 - 5 - 8 - 3 - 10 - 6 - 7 - 2 - 11 - 4 - 9

Cooling and lubrication

Water cooled
Dry sump for sport models, wet sump for 275 GT

Models used and Output

Year Model, Engine Induction Compression ratio Power Torque
1964 Ferrari 275 P, Tipo 211 6 x Weber 38 DCN, SOHC 9.7:1 320 bhp / 239 KW @ 7500 rpm 435.2 Nm / 321.0 ft lbs @ 5500 rpm
1964 Ferrari 250 LM, Tipo 211 6 x Weber 38 DCN, SOHC 9.7:1 320 bhp / 239 KW @ 7500 rpm 435.2 Nm / 321.0 ft lbs @ 5500 rpm
1965 Ferrari 275 P2 6 x Weber 40 DCN/2, DOHC 9.9:1 350 bhp / 261 KW @ 8500 rpm
1965 Ferrari 275 GTB, Tipo 213 3 or 6 x Weber 40 DCN/3 or 6 x Weber 40 DCZ/6 Carburetors, SOHC 9.2:1 280 bhp / 206 KW @ 7500 rpm 294 Nm / 216.8 lb-ft @ 5000 RPM
1966 Ferrari 275 GTB/C, Tipo 213 6 x Weber 40 DCN/2 or 3 x Weber 40 DFI/3, SOHC 9.3:1 300 bhp / 221 KW @ 7500 rpm 435.2 Nm / 321.0 ft lbs @ 5500 rpm
1967 Ferrari 275 GTB/4, Tipo 226 6 x Weber 40 DCN 9, DOHC 9.2:1 300 bhp / 221 KW @ 8000 rpm 294 Nm / 217 ft lbs @ 6000 rpm

Drawings

Weber 40 DCN 17
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