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Standard A12 Engine:
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Type:
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4 cylinder in-line OHV
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Bore:
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73 mm (2.874 in)
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Stroke:
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70 mm (2.756 in)
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Capacity:
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1171 cm^3 (71.5 in^3)
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Compression ratio:
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9.0:1
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Maximum hp:
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68hp SAE @ 6000 rpm
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Maximum torque:
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9.70 kg/m @ 3600 rpm
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A12 GX Engine:
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Type:
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4 cylinder in-line OHV
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Bore:
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73 mm (2.874 in)
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Stroke:
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70 mm (2.756 in)
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Capacity:
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1171 cm^3 (71.5 in^3)
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Compression ratio:
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10.0:1
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Maximum hp:
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83hp SAE @ 6400 rpm
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Maximum torque:
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10.0 kg/m @ 4400 rpm
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A12A Engine:
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Type:
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4 cylinder in-line OHV
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Bore:
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75 mm (2.95 in)
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Stroke:
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70 mm (2.766 in)
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Capacity:
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1171 cm^3 (71.45 in^3)
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Compression ratio:
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9.0:1
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4 Speed Manual Gearbox Ratios:
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Fourth:
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1.00 : 1
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Third:
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1.40 : 1
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Second:
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2.17 : 1
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First:
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3.76 : 1
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Reverse:
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3.64 : 1
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3 Speed Manual Gearbox Ratios:
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Third:
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1.00 : 1
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Second:
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1.73 : 1
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First:
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3.38 : 1
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Reverse:
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3.64 : 1
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3 Speed Automatic Gearbox Ratios:
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Third:
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1.000 : 1
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Second:
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1.458 : 1
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First:
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2.458 : 1
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Reverse:
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2.182 : 1
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Differential Ratios:
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Sedan and Coupe:
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3.900 : 1
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Wagon and Ute:
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4.111 : 1
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Capacities:
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Fuel tank (sedan):
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40 litres
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Fuel tank (wagon, coupe):
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38 litres
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Cooling System:
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4.9 litres
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Gearbox (manual):
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1.2 litres
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Gearbox (auto):
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5.5 litres
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Differential case:
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0.75 litres
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Engine sump with filter:
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3.24 litres
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Service Information:
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Ignition timing:
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7 degrees @ 600 rpm
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Idling speed:
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600 rpm
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Spark plug gap:
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0.8 - 0.9 mm (0.031 - 0.035 inch)
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Distributer rotation:
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anti-clockwise
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Distributer point gap:
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0.45 - 0.55 mm (0.018 - 0.022 inch)
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Firing order:
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1-3-4-2
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Dwell angle (idle):
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49 - 55 degrees
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Valve clearance (hot):
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0.35 mm
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Specifications sourced from
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Gregory's Datsun 1000-1200 Service and Repair Manual (No 87)
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Datsun 1200 Owner's Manual Model (K)(V)B110 Series (May 1973)
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