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 86.0 mm (3.39 in) cylinder bore and 79.0 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
Production
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):
Weight

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 (Top):0.040-0.073 mm (0.0016-0.0029 in)
Piston ring side clearance (Second):0.030-0.063 mm (0.0012-0.0025 in)
Piston ring side clearance (Oil):Combined
Piston ring end gap (Top):0.250-0.400 mm (0.0098-0.0157 in)
Piston ring end gap (Second):0.150-0.300 mm (0.0059-0.0118 in)
Piston ring end gap (Oil):0.300-0.900 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)
Valve timing (INTAKE):240°
Valve timing (EXHAUST):248°
Valve head diameter (INTAKE):44.0 mm (1.732 in)
Valve head diameter (EXHAUST):35.0 mm (1.378 in)
Valve length (INTAKE):116.15-116.55 mm (4.5728-4.5886 in)
Valve length (EXHAUST):117.15-117.55 mm (4.6122-4.6279 in)
Valve stem outer diameter (INTAKE):7.965-7.980 mm (0.3136-0.3142 in)
Valve stem outer diameter (EXHAUST):7.945-7.960 mm (0.3128-0.3134 in)
Camshaft cam height (INTAKE):39.950-40.000 mm (1.5728-1.5748 in)
Camshaft cam height (EXHAUST):40.300-40.350 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
5W-40
10W-30
10W-40
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
Hot: BP5ES, BP4ES, L46PW, L47PW, BPR5ES, BPR4ES
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
Dome-Zero1978
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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We try to use verified sources and official documentation, however, differences between sources or errors in entering information may occur. We do not provide advice on technical issues related to the engines operation or repair. We do not recommend using provided information for engines repairing engines or spare parts ordering, use only official service manuals and spare-parts catalogs.

4 Comments

  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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