The Nissan / Datsun L13 is a carbureted 1.3 liter (1296 cc, 79.08 cu-in) straight-four, four-stroke cycle gasoline from Nissan L-family produced since 1967 to 1970 and used on Datsun 510.
The Nissan L13 engine features a cast-iron block and aluminum head with overhead camshaft and a fully balanced five-bearing crankshaft. The cylinder block is cast in a single unit and features deep skirting.
The L13 has an 83.0 mm (3.27 in) cylinder bore and 59.9 mm (2.36 in) piston stroke with a compression ratio of 8.5:1. It produced 77 PS (57 kW, 76 HP) at 6000 rpm of maximum horsepower and 108 Nm (11.1 kg⋅m, 79.6 lb⋅ft) at 3600 rpm of torque.
The breakdown of the engine code is as follows:
- L – Engine Family
- 13 – 1.3 Liter Displacement
General information
| Engine Specifications | |
| Engine code | L13 |
| Layout | Four stroke, Inline-4 (Straight-4) |
| Fuel type | Gasoline |
| Production | 1967-1970 |
| Displacement | 1.3 L; 1,296 cm3 (79.08 cu in) |
| Fuel system | Carburetor |
| Power adder | None |
| Max. horsepower | 77 PS (57 kW, 76 HP) at 6,000 rpm |
| Max. torque | 108 Nm (11.1 kg⋅m, 79.6 lb⋅ft) at 3,600 rpm |
| Firing order | 1-3-4-2 |
| Dimensions (L x H x W): | – |
| Weight | – |
Cylinder block
The L13 engine has a cast-iron cylinder block, bore is 83.0 mm (3.27 in) and stroke is 59.9 mm (2.36 in). The cylinder block, a monoblock specially cast structure, employs the five bearing-support system for quietness and higher durability. The pistons are each fitted with two compression rings and a single oil ring.
| Cylinder block | ||
| Cylinder block alloy | Cast iron | |
| Compression ratio: | 8.5:1 | |
| Cylinder bore: | 83.0 mm (3.2677 in) | |
| Piston stroke: | 59.9 mm (2.3583 in) | |
| Number of piston rings (compression / oil): | 2 / 1 | |
| Number of main bearings: | 5 | |
| Cylinder inner diameter (standard): | 83.0 mm (3.2677 in) | |
| Piston skirt diameter (standard): | 82.99-83.04 mm (3.267-3.269 in) | |
| Piston pin outer diameter: | 20.995-21.000 mm (0.8266-0.8268 in) | |
| Piston ring side clearance: | Top | 0.040-0.073 mm (0.0016-0.0029 in) |
| Second | 0.030-0.063 mm (0.0012-0.0025 in) | |
| Oil | 0.030-0.063 mm (0.0012-0.0025 in) | |
| Piston ring end gap: | Top | 0.23-0.38 mm (0.0091-0.0150 in) |
| Second | 0.15-0.30 mm (0.0059-0.0118 in) | |
| Oil | 0.15-0.30 mm (0.0059-0.0118 in) | |
| Piston ring height: | Top | 2.00 mm (0.08 in) |
| Second | 2.00 mm (0.08 in) | |
| Oil | 4.00 mm (0.16 in) | |
| Connecting rod center distance: | 132.97-133.03 mm (5.235-5.237 in) | |
| Crankshaft journal diameter: | 54.942-54.955 mm (2.1631-2.1336 in) | |
| Crankpin diameter: | 49.961-49.974 mm (1.9670-1.9675 in) | |
| Crankshaft center distance: | 29.95 mm (1.1791 in) | |
Cylinder head
The cylinder head is made of a light, strong aluminum alloy with good cooling efficiency. The camshaft is made of specially cast iron and is located inside the rocker cover. The camshaft is driven by a double row roller chain from the crankshaft pulley. Intake valves are 38.00 mm (1.50 in) in diameter and the exhaust valves are 33.00 mm (1.30 in).
| Cylinder head | ||
| Valve Arrangement: | OHV, chain drive | |
| Valves: | 8 (2 valves per cylinder) | |
| Intake/Exhaust duration: | – | |
| Valve head diameter: | INTAKE | 38.0 mm (1.50 in) |
| EXHAUST | 33.0 mm (1.30 in) | |
| Valve guide length: | INTAKE | 59.0 mm (2.32 in) |
| EXHAUST | 59.0 mm (2.32 in) | |
| Valve stem diameter: | INTAKE | 8.00 mm (0.31 in) |
| EXHAUST | 8.00 mm (0.31 in) | Valve lift: | INTAKE | 10.0 mm (0.40 in) |
| EXHAUST | 10.0 mm (0.40 in) | |
| Outer camshaft journal diameter: | 47.949-47.962 mm (1.8878-1.8883 in) | |
Maintenance data
| Valve clearance (HOT) | |
| Intake valve | 0.25 mm (0.010 in) |
| Exhaust valve | 0.30 mm (0.012 in) |
| Valve clearance (COLD) | |
| Intake valve | 0.20 mm (0.008 in) |
| Exhaust valve | 0.25 mm (0.010 in) |
| 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) |
Hight level: 4.3 l Low level: 3.3 l |
| Oil change interval, km (miles) | 5,000-10,000 (3,000-6,000) |
| Oil pressure, kg/cm2 (lb/sq.in.) | 3.8-4.2 (54.6) |
| Ignition system | |
| Spark plug | BP5ES (NGK) |
| Spark plug gap | 0.8-0.9 mm (0.03 -0.035 in) |
Vehicle applications
| Model | Years Produced |
| Datsun 510 | 1967-1970 |
| Nissan Bluebird (510) | 1967-1970 |
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