Porsche Type 369/506 (1948)
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Home » Racing Engines » Porsche 369/506

Specifications

Porsche B4 1100 type 369, 1300 type 506
Introduced in 1948 as 1100 and in 1951 as 1300

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Dimensions

Cylinders arrangement: Boxer 'flat' 4 cylinders, or V4 with 180ยบ included angle, and opposed pistons
Strokes: 4
Fuel: petrol

Type Bore x Stroke Capacity
369 73.5 mm x 64.0 mm, 2.89" x 2.52" 1086 cc, 66.1 ci
506 80.0 mm x 64.0 mm, 3.15" x 2.52" 1286 cc, 78.6ci

Construction materials

magnesium crankcase, aluminium finned cylinders with nicasil coatings, aluminium alloy finned cylinderhead
Steel crankshaft with 3 main bearings
Steel connecting rod, 136 mm distance center to center, 50 mm big end hole diameter, 19.75mm big end width, 22 mm small end hole diameter, 21mm small end width
JE forged aluminium high dome Pistons, cast iron rings

Cylinder-head

side camshaft with overhead valves (OHV), gear driven
2 valves per cylinder - 8 valves total

Aspiration

2 x Solex 32 PBI Carburetors

Ignition

Firing order 1 - 4 - 3- 2
battery, 6V, 84 Ah, 1953: 75 Ah
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Cooling and lubrication

air cooled
Wet sump with oil cooler, 3.5 lt oil capacity

Models used and Output

Year Model Induction Compression ratio Power Torque
1948 Porsche 356
Type 369
2 x Solex 32 PBI Carbs 7.0:1 40 bhp / 29.5 kW @ 4000 rpm 71.6 Nm / 53 ft lbs @ 3300 rpm
1951 Porsche 356 SL
Type 369
2 x Solex 32 PBI Carbs 7.0:1 46 bhp / 34 kW
1951 Porsche 356 1300
Type 506
2 x Solex 32 PBI Carbs 6.5:1 44 bhp / 32.5 kW @ 4200 rpm 81.4 Nm / 60 ft lbs @ 2500 rpm
1953 Porsche 356 1300
Type 506
2 x Solex 32 PBI Carbs 6.5:1 44 bhp / 32.5 kW @ 4400 rpm 83.4 Nm / 62 ft lbs @ 2500 rpm

Drawings

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