Nissan L28

Nissan L28 engineThe Nissan / Datsun L28 is a carbureted 2.8 liter (2753 cc) straight-six, four-stroke cycle, liquid-cooled gasoline engine from Nissan L-family.

The Nissan / Datsun L28 engine features a cast-iron block, a wedge-shaped combustion chamber, aluminum head with overhead camshaft and a fully balanced 7-bearing crankshaft. The cylinder block is cast in a single unit and features deep skirting.

It has an 86 mm (3.39 in) cylinder bore and 79 mm (3.11 in) piston stroke with a compression ratio rating of 8.6:1.

It produced from 120.0 PS (88.0 KW; 118.0 HP) to 140.0 PS (103.0 KW; 138.0 HP) of horsepower and from 201.0 Nm (20.5 kg·m; 148.3 lbf·ft) to 220.0 Nm (22.4 kg·m; 162.4 lbf·ft) of torque.

The breakdown of the engine code is as follows:

  • L – Engine Family
  • 28 – 2.8 Liter Displacement

General information

Engine Specifications
Engine codeL28
LayoutFour stroke, Inline-6 (Straight-6)
Fuel typeGasoline
Displacement2.8 L, 2,753 cc (168.0 cu in)
Max. horsepower From 120.0 PS (88.0 KW; 118.0 HP)
to 140.0 PS (103.0 KW; 138.0 HP)
Max. torque From 201.0 Nm (20.5 kg·m; 148.3 lbf·ft)
to 220.0 Nm (22.4 kg·m; 162.4 lbf·ft)
Fuel systemCarburetor
Power adderNone
Firing order1-5-3-6-2-4
Cooling systemLiquid-cooling
Dimensions (L x H x W):

Cylinder block

The L28 engine has a cast-iron cylinder block, bore is 86.0 mm (3.40 in) and stroke is 79.0 mm (3.10 in). The cylinder block, a monoblock specially cast structure, employs the seven bearing support system for quietness and higher durability. The pistons are each fitted with two compression rings and a single oil ring. The crankshaft of L28 engine is made of special forged steel.

Cylinder block
Cylinder block alloyCast iron
Compression ratio:8.3:1
Cylinder bore:86.0 mm (3.39 in)
Piston stroke:79.0 mm (3.11 in)
Number of piston rings (compression / oil):2 / 1
Number of main bearings:7
Cylinder inner diameter (standard):86.000-86.050 mm (3.3858-3.3878 in)
Piston skirt diameter (standard):85.965-86.015 mm (3.3844-3.3864 in)
Piston pin outer diameter:20.993-20.998 mm (0.8265-0.8267 in)
Piston ring side clearance:Top0.040-0.073 mm (0.0016-0.0029 in)
Second0.030-0.063 mm (0.0012-0.0025 in)
Piston ring end gap:Top0.25-0.40 mm (0.0098-0.0157 in)
Second0.15-0.30 mm (0.0059-0.0118 in)
Oil0.30-0.90 mm (0.012-0.035 in)
Connecting rod center distance:130.35 mm (5.13 in)
Connectin rod small end inner diameter:20.965-20.978 mm (0.8254-0.8259 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:39.50 mm (1.5551 in)

Cylinder head

The cylinder head is made of a light, strong aluminum alloy with good cooling efficiency. The camshaft is made of special cast-iron and is located inside the rocker cover. Intake valves are 44.0 mm in diameter, intake duration is 240 °, and the exhaust valves are 35.0 mm, exhaust duration is 248 °. The intake manifold is cast aluminum.

Cylinder head
Valve Arrangement:OHV, chain drive
Valves:12 (2 valves per cylinder)
Intake/Exhaust duration:240° / 248°
Valve head diameter:INTAKE44.0 mm (1.732 in)
EXHAUST35.0 mm (1.378 in)
Valve length:INTAKE116.15-116.55 mm (4.5728-4.5886 in)
EXHAUST117.15-117.55 mm (4.6122-4.6279 in)
Valve stem diameter:INTAKE7.965-7.980 mm (0.3136-0.3142 in)
EXHAUST7.945-7.960 mm (0.3128-0.3134 in)
Cam height:INTAKE39.95-40.00 mm (1.5728-1.5748 in)
EXHAUST40.30-40.35 mm (1.5866-1586 in)
Outer camshaft journal diameter:47.949-47.962 mm (1.8878-1.8883 in)

Tightening torque specs

Tightening torque specs
Main bearing cap bolt44-54 Nm; 4.5-5.5 kg·m; 33-40 ft·lb
Connecting rod big end nut44-54 Nm; 4.5-5.5 kg·m; 33-40 ft·lb
Water pump bolt M8: 12-16 Nm; 1.2-1.6 kg·m; 9-12 ft·lb
M6: 5-10 Nm; 0.5-1.0 kg·m; 3.6-7.2 ft·lb
Flywheel bolt (M/T)137-157 Nm; 14.0-16.0 kg·m; 101-1116 ft·lb
Drive plate bolt (A/T)137-157 Nm; 14.0-16.0 kg·m; 101-1116 ft·lb
Cylinder head bolt69-83 Nm; 7.0-8.5 kg·m; 51-61 ft·lb
Cylinder head to front cover bolt8-14 Nm; 0.8-1.4 kg·m; 5.8-10.1 ft·lb
Camshaft thrust plate bolt8-14 Nm; 0.8-1.4 kg·m; 5.8-10.1 ft·lb
Pivot bushing bolt78-118 Nm; 8.0-12.0 kg·m; 58-87 ft·lb
Pivot lock nut49-59 Nm; 5.0-6.0 kg·m; 36-46 ft·lb
Camshaft sprocket bolt127-147 Nm; 13.0-15.0 kg·m; 94-108 ft·lb
Chain guide / tensioner bolt6-10 Nm; 0.6-1.0 kg·m; 4.3-7.2 ft·lb
Oil pump bolt11-15 Nm; 1.1-1.5 kg·m; 8-11 ft·lb
Crank pulley nut118-157 Nm; 12.0-16.0 kg·m; 87-116 ft·lb
Rocker cover bolt18-27 Nm; 1.8-2.8 kg·m; 13-20 ft·lb
Spark plug15-20 Nm; 1.5-2.0 kg·m; 11-14 ft·lb
Manifold bolt and nut Bolt: 15-25 Nm; 1.5-2.5 kg·m; 11-18 ft·lb
Nut: 12-16 Nm; 1.2-1.6 kg·m; 9-12 ft·lb
Water outlet bolt12-20 Nm; 1.2-2.0 kg·m; 9-14 ft·lb
Thermostat housing10-16 Nm; 1.0-1.6 kg·m; 7-12 ft·lb
Distributor support bolt4-8 Nm; 0.4-0.8 kg·m; 2.9-5.8 ft·lb
Alternator bracket39-59 Nm; 4.0-6.0 kg·m; 29-43 ft·lb
Engine mouting bracket69-81 Nm; 7.0-8.3 kg·m; 51-60 ft·lb
Carburetor nut12-18 Nm; 1.2-1.8 kg·m; 9-13 ft·lb
Fuel pump nut12-18 Nm; 1.2-1.8 kg·m; 9-13 ft·lb

Maintenance data

Valve clearance (HOT)
Intake valve0.25 mm (0.010 in)
Exhaust valve0.30 mm (0.012 in)
Compression pressure
Standard12.0 kg/cm2 (11.77 bar, 171 psi) / 350 rpm
Minimun9.0 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
Oil type APISE
Engine oil capacity (Refill capacity) With filter change: 4.4 liters (4.6 US.qts, 3.9 Imp. qts)
Without filter change: 3.9 liters (4.1 US.qts, 3.4 Imp. qts)
Oil change interval, km (miles)5,000-10,000 (3,000-6,000)
Ignition system
Spark plug Cold: BP7ES, L44PW, BPR7ES
Standard: BP6ES, L45PW, BPR6ES
Spark plug gap0.8-0.9 mm (0.03 -0.035 in)

Vehicle applications

ModelYears Produced
Nissan Laurel C1301975–1977
Nissan Cedric 3301978–1979
Nissan Gloria 3301978–1979
Nissan Patrol 1601980–1989
Nissan Patrol 2601986–2002
Author: Sergei Wers
About: Co-founder and CEO of a multi-brand auto repair shop (engine repair, chassis repair, body repair and painting) for over 15 years. I have been developing internet sites with technical specifications for more than seven years.

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  1. hi
    I do have the complete repair manual on the L28 engine from 1985. It does cover all the requirements one needs to rebuild the engine.

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