Ferrari Colombo 250 (1952)
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Specifications

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1952: Colombo 250
1953: Colombo 250 Tipo 125
1954: Colombo 250 Tipo 112
1955: Colombo 250 Tipo 128
1956: Colombo 250 Tipo 128 B
1957: Colombo 250 Tipo 128 LM
1957: Colombo 250 Tipo 128 C
1959: Colombo 250 Tipo 128 D
1960: Colombo 250 Tipo 168
1960: Colombo 250 Tipo 168B

Dimensions

Cylinders arrangement: V12 with 60ยบ included angle
Strokes: 4
Bore x Stroke: 73.0 mm x 58.8 mm, 2.874" x 2.315"
Capacity: 2953cc, 180ci
Individual cylinder capacity is 250cc, thus the name of the engine
Compression ratio: 9.0:1

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 Tipo 130 (racing) camshaft (SOHC), chain driven
2 valves per cylinder - 24 valves total

Aspiration

Natural
1952: 3 x Weber 36 DCF Carburetors
1953 Tipo 125: 3 x Weber 36 IF 4/C or 3 x Weber 36 DCZ Carburetors
1954 Tipo 112: 3 x Weber 36 DCZ/3 Carburetors
1955 Tipo 128: 3 x Weber 36 DCL/3 Carburetors
1957 Tipo 128 LM: 6 x Weber 36 DCN
1960 Tipo 168: 3 x Weber 40 DCL/6
1961 Tipo 168B: 6 x Weber 38 DCN
body of carburetor is aluminum (DCL) or zinc (DCZ)
Click here for DCNF manual

Ignition

Single spark plug per cylinder
single coil, single distributor
Tipo 168: twin coil, twin distributor
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 250 GT

Models used and Output

Year Model, Engine Induction Compression ratio Power Torque
1952 Ferrari 250 S 3 x Weber 36 DCF 9.0:1 230 HP / 169 KW @ 7500 rpm 250 Nm / 184 ft lbs @ 5000 rpm
1953 Ferrari 250 MM, Tipo 125 3 x Weber 36 DCZ 9.0:1 240 HP / 177 KW @ 7200 rpm 250 Nm / 184 ft lbs @ 5000 rpm
1954 Ferrari 250 GT LWB Europa, Tipo 112 3 x Weber 36 DCZ/3 8.8:1 230 HP / 172 KW @ 7000 rpm
1955 Ferrari 250 GT LWB, Tipo 128 3 x Weber 36 DCL/3 8.5:1 240 HP / 179 KW @ 7000 rpm 265 Nm / 195 ft lbs @ 5000 rpm
1957 Ferrari 250 TR, Tipo 128LM 6 x Weber 36 DCN 9.8:1 300 HP / 224 KW @ 7200 rpm 302 Nm / 223 ft lbs @ 6100 rpm
1960 Ferrari 250 TRI, Tipo 128LM 6 x Weber 36 DCN 9.8:1 305 HP / 227 KW @ 7400 rpm 380 Nm / 280 ft lbs @ 5500 rpm
1960 Ferrari 250 GT SWB, Tipo 168 3 x Weber 40 DCL/6 8.8:1 240 HP / 177 KW @ 7000 rpm 275 Nm / 203 ft lbs @ 5500 rpm
1960 Ferrari 250 GT SWB Competizione, Tipo 168 Comp 3 x Weber 36 DCZ/3 9.2:1 280 HP / 206 KW @ 7000 rpm 264 Nm / 195 ft lbs @ 5500 rpm
1961 Ferrari 250 GT SWB Competizione '61, Tipo 168 Comp 3 x Weber 46 DCF3 9.7:1 290 bhp / 216 KW @ 7000 rpm 275 Nm / 203 ft lbs @ 5500 rpm
1962 Ferrari 250 GTO, Tipo 168B 6 x Weber 38 DCN 9.7:1 300 HP / 224 KW @ 7500 rpm 333 Nm / 246 ft lbs @ 5500 rpm
1963 Ferrari 250 P, Tipo 168B 6 x Weber 38 DCN 9.7:1 302 HP / 225 KW @ 7500 rpm 333 Nm / 246 ft lbs @ 5500 rpm
Ferrari-250-GT-SWB-Berlinetta-Competizione.jpg Source
3 x Weber 36 DCZ/3
62-Ferrari-250GTO_num6-DV-12-AI_e03.jpg Source
6 x Weber 38 DCN

Drawings

exploded_DCN.gif
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