Nissan L13

Nissan L13The 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):

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
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/ 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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