
The B10, B20 models were equipped with 1.0 L Straight-four engine A10. Bore and stroke were 73.0 mm and 59.0 mm, respectively. Compression ratio rating was 8.5:1. The A10 on Datsun B10 produced from 55 HP (41 kW, 56 PS) of horsepower and 75.5 Nm (56 ft-lb) of torque at 4,000 rpm .
Engine Specifications
| Datsun Sunny B10 Engine Specifications | ||
| Engine code | A10 | |
| Layout | Four stroke, Inline-4 (Straight-4) | |
| Fuel type | Gasoline (petrol) | |
| Displacement | 1.0L, 988 cc (60.3 cu in) | |
| Cylinder block alloy | Cast iron | |
| Cylinder bore | 73.0 mm (2.87 in) | |
| Piston stroke | 59.0 mm (2.32 in) | |
| Compression ratio | 8.5:1 | |
| Valve Arrangement: | SOHC, chain drive | |
| Valves: | 8 (2 valves per cylinder) | |
| Intake valve timing: |
Open: 12° B.T.D.C. Close: 48° A.T.D.C. |
|
| Exhaust valve timing: |
Open: 50° B.T.D.C. Close: 10° A.T.D.C. |
|
| Intake valve head diameter: | 37.0 mm (1.457 in) | |
| Exhaust valve head diameter: | 30.0 mm (1.181 in) | |
| Fuel system | Carburetor | |
| Power output | 55 HP (41 kW, 56 PS) | |
| Torque output | 75.5 Nm (7.7 kgm, 56 ft-lb) | |
| Firing order | 1-3-4-2 | |
| Engine weight | 91.5 kg (210.5 kg) | |
Top speed and fuel consumption
| Top speed and Fuel consumption | |
| Top speed | 130 km/h / 81 mph |
| Fuel consumption (city) | – |
| Fuel consumption (highway) | – |
| Fuel consumption (combined 50/50) | – |
Maintenance data
| Valve clearance (Cold) | |
| Intake valve | 0.25 mm (0.0098 in) |
| Exhaust valve | |
| Valve clearance (Hot) | |
| Intake valve | 0.35 mm (0.0138 in) |
| Exhaust valve | |
| Compression pressure | |
| Standard | 12.7 kg/m2 (181 psi) / 350 rpm |
| Minimun | 10.0 kg/m2 (142 psi) / 350 rpm |
| Oil system | |
| Oil consumption , L/1000 km (qt. per miles) | up to 0.5 (1 qt. per 1200 miles) |
| Recommended engine oil | 5W-30, 5W-40, 10W-30, 10W-40 |
| Engine oil capacity (Refill capacity) |
Max.level 3.2 l (3.4 qt.) Min.level 2.2 l (2.4 qt.) |
| Oil change interval, km (miles) | 5,000-10,000 (3,000-6,000) |
| Coling system | |
| Coolant capacity |
3.8 L (with heater 4.5 l) Radiator size: 2.0 L Engine size: 1.8 L |
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