The Datsun Sunny (B10) is a first generation of midsize rear-wheel-drive sedan car manufactured by Japanese automaker Nissan Motor Company. The Datsun Sunny has a four body styles: two-door sedan and coupe, three-door station wagon and four-door sedan. The B10 was producted from year 1966 to 1969. The Datsun Sunny Truck (B20) debuted in 1967 and was the light commercial truck variation of the B10 passenger models.
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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