The Nissan J13 is a carbureted 1.3 liter (1,299 cc, 79.3 cu.in.) straight-four, four-stroke cycle gasoline from Nissan J-family. The J13 engine was producted since 1965 to 1969.
The Nissan J13 engine has a deep skirt, cast-iron cylinder block with cast-iron cylinders and cast iron head with bathtub type combustion chambers. It has an OHV type valve mechanism and 8 valves (2 per cylinder).
The J13 engine has a 73 mm (2.87 in) cylinder bore and 77.6 mm (3.06 in) piston stroke with a compression ratio of 8.2:1.
The Nissan J13 produced 67 HP (50 kW; 68 PS) of horsepower.
The breakdown of the engine code is as follows:
- J – Engine Family
- 13 – 1.3 Liter Displacement
General information
| Engine Specifications | |
| Engine code | J13 |
| Layout | Four stroke, Inline-4 (Straight-4) |
| Fuel type | Gasoline |
| Production | 1965-1969 |
| Displacement | 1.3 L, 1,299 cc (79.3 cu in) |
| Fuel system | Carburetor |
| Power adder | None |
| Max. horsepower | 67 HP (50 kW; 68 PS) |
| Max. torque | – |
| Firing order | 1-3-4-2 |
| Dimensions (L x H x W): | – |
| Weight | – |
Cylinder block
The crankshaft is a fully counterbalanced, three bearing type designed to turn out smooth, dependable power. Water is forced through the water jackets to deprive the cylinders of unwanted combustion heat. The crankshaft is of special steel forging with three main bearing journals. To provide balance, four counter-balance weights arc provided just opposite the cranks. The main bearing journals and connecting rod journals are cases hardened and finished to extreme smoothness for increased wear resistance.
The pistons are made of aluminum alloy casting. The piston pin is a full floating fit to the piston while it is press-fitted to the connecting rod small end. The connecting rod is a special steel forging. On the Nissan J13 engine, the piston pin is bolted to the small end to prevent it from working out of place during operation. The cylinder walls are lubricated by oil squirted from the oil jets located at the connecting rod big ends. The pistons are each fitted with two compression rings and a single oil ring.
| Cylinder block | ||
| Cylinder block alloy | Cast iron | |
| Compression ratio: | 8.2:1 | |
| Cylinder bore: | 73 mm (2.87 in) | |
| Piston stroke: | 77.6 mm (3.06 in) | |
| Number of piston rings (compression / oil): | 2 / 1 | |
| Number of main bearings: | 3 | |
| Cylinder inner diameter (standard): | 73.000-73.050 mm (2.8740-2.8760 in) | |
| Piston pin outer diameter: | 17.447-17.452 mm (0.6869-0.6871 in) | |
| Piston pin hole diameter: | 17.453-17.460 mm (0.6871-0.6874 in) | |
| Piston diameter: | 72.987-73.037 mm (2.8735-2.8755 in) | |
| Piston ring side clearance: | Top | 0.036-0.076 mm (0.0014-0.0030 in) |
| Second | 0.036-0.076 mm (0.0014-0.0030 in) | |
| Oil | – | |
| Piston ring end gap: | Top | 0.30-0.33 mm (0.079-0.130 in) |
| Second | 0.30-0.33 mm (0.079-0.130 in) | |
| Oil | 0.30-0.90 mm (0.0118-0.0354 in) | |
| Connecting rod center distance: | 142.67 mm (5.617 in) | |
| Crankshaft journal diameter: | 50.813-50.825 mm (2.0005-2.0010 in) | |
| Crankpin diameter: | 47.640-47.652 mm (1.8756-1.8761 in) | |
| Crankshaft center distance: | 38.8 mm (1.528 in) | |
Cylinder head
The cylinder head is made of steel casting. It contains bathtub type combustion chambers. A special sintered alloy valve seat is installed on the exhaust valve. It is press-fitted.
The camshaft is of special steel casting and is supported by three main bearings. The cam lobes are case hardened and finished to extreme smoothness for increased wear resistance. The rocker shaft is made of carbon steel: it is also case hardened for increased durability. The valve train consists of the camshaft, push rod, valve rocker arm, and valve; motion is transmitted through these four parts in the order listed. The valve spring is of double spring type, inner and outer.
| Cylinder head | ||
| Valve Arrangement: | OHV, chain drive | |
| Valves: | 8 (2 valves per cylinder) | |
| Intake/Exhaust duration: | 244°/244° | |
| Valve head diameter: | INTAKE | 34.8-35.0 mm (1.370-1.378 in) |
| EXHAUST | 29.9-30.1 mm (1.177-1.185 in) | |
| Valve length: | INTAKE | 109.35-109.65 mm (4.3051-4.3169) in) |
| EXHAUST | 108.55-108.85 mm (4.2736-4.2854 in) | |
| Valve stem diameter: | INTAKE | 8.680-8.693 mm (0.3417-0.3422 in) |
| EXHAUST | 8.680-8.693 mm (0.3417-0.3422 in) | |
| Valve spring length (Double spring type): | OUTER | 52.0 mm (2.047 in) |
| INNER | 50.0 mm (1.969 in) | |
| Valve spring length (Single spring type): | 47.1 mm (1.854 in) | |
| Camshaft journal diameter | FRONT | 45.434-45.447 mm (1.7887-1.7892 in) |
| CENTER | 43.897-43.910 mm (1.7282-1.7287 in) | |
| REAR | 41.218-41.231 mm (1.6228-1.6233 in) | |
| Camshaft lobe height: | 37.60-37.70 mm (1.4803-1.4842 in) | |
Tightening torque specs
| Tightening torque specs | |
| Cylinder head stud nut | 50-60 Nm; 5.0-6.0 kg·m; 36-43 ft·lb |
| Rocker shaft bracket bolt | 20-30 Nm; 2.0-3.0 kg·m; 14-22 ft·lb |
| Connecting rod big end nut | 28-35 Nm; 2.8-3.5 kg·m; 20-25 ft·lb |
| Connecting rod small end bolt | 28-35 Nm; 2.8-3.5 kg·m; 18-25 ft·lb |
| Flywheel fixing bolt | 40-50 Nm; 4.0-5.0 kg·m; 29-36 ft·lb |
| Main bearings cap bolts | 100-110 Nm; 11.0-11.0 kg·m; 72-80 ft·lb |
| Camshaft sprocket bolts | 40-50 Nm; 4.0-5.0 kg·m; 29-36 ft·lb |
| Oil pan bolts | 5-10 Nm; 0.5-1.0 kg·m; 3.6-7.2 ft·lb |
| Oil pump bolts | 12-18 Nm; 1.2-1.8 kg·m; 3.6-7.2 ft·lb |
| Oil pan drain plug | 20-30 Nm; 2.0-3.0 kg·m; 14.5-21.7 ft·lb |
| Carburetor nuts | 8-12 Nm; 0.8-1.2 kg·m; 5.8-8.7 ft·lb |
| Manifold nuts | 17-23 Nm; 1.7-2.3 kg·m; 12-17 ft·lb |
| Fuel pump nuts | 12-18 Nm; 1.2-1.8 kg·m; 8.7-13.0 ft·lb |
| Crank pulley bolt | 12-14 Nm; 1.2-1.4 kg·m; 8.7-10.1 ft·lb |
| Water pump bolts | 12-18 Nm; 1.2-1.8 kg·m; 8.7-13.0 ft·lb |
| Oil filter bolts | 16-24 Nm; 1.6-2.4 kg·m; 12-17 ft·lb |
| Side cover bolts | 4-8 Nm; 0.4-0.8 kg·m; 2.9-5.8 ft·lb |
Maintenance data
| Valve clearance (HOT) | |
| Intake valve | 0.35 mm (0.0138 in) |
| Exhaust valve | 0.35 mm (0.0138 in) |
| Compression pressure | |
| Standard | 12.0 kg/cm2 (11.77 bar, 171 psi) / 350 rpm |
| Minimun | 9.0 kg/cm2 (8.83 bar, 128 psi) / 250 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 |
| Oil type API | SE |
| Engine oil capacity (Refill capacity) | With filter change 4.4 l Without filter change 3.4 l |
| Oil change interval, km (miles) | 5,000-10,000 (3,000-6,000) |
| Ignition system | |
| Ignition timing (B.T.D.C./rpm) | 8°/600 rpm |
| Spark plug | NGK:B4ES |
| Spark plug gap | 0.8-0.9 mm (0.03 -0.035 in) |
| Spark plug tightening torque | 15-20 Nm; 1.5-2.0 kg·m; 11-14 ft·lb |
Vehicle applications
| Model | Years Produced |
| Datsun 411 | 1965-1967 |
| Datsun 520, 521 | 1967-1969 |
| Nissan Bluebird 510s (Mexico) | – |
Author:
Would it be possible to get a part number For the starter for this engine this engine?
This motor used Hitachi s114-92k starter motor or analogs for example LRS00116 from Lucas Electrical
Help ! I am missing one of the two carburetor drain plugs and gasket from what I think is the stock carb on a 67 Datsun 520 truck … seems to run fine but leaks gas as the plug that is in there now has been changed and appears to be to small