Nissan FJ20E

Nissan FJ20EThe Nissan FJ20E is a 2.0 liter (1,990 cc, 121.43 cu in) straight-4, four-stroke cycle gasoline engine from Nissan FJ-family. The Nissan FJ20E motor was produced from 1981.

The Nissan FJ20E engine has DOHC (double overhead camshaft) design with 16 valves (4 valves per cylinder), cast-iron block and an aluminum cylinder head; five-bearing crankshaft. The engine is equipped with Multiport Fuel Injection system (4 x 220 cc/min fuel injectors) and ignition system with a mechanical distributor.

The FJ20E engine has an 89.0 mm (3.5 in) cylinder bore and 80.0 mm (3.15 in) piston stroke. The compression ratio is 9.5:1 for Europe and Hong Kong and 9.1:1 for other markets. It produced 150 PS (110 kW; 147.5 HP) at 6,000 rpm of horsepower and 181 Nm (18.46 kg·m; 133.58 ft·lb) at 4,000 rpm of torque.

The breakdown of the engine code is as follows:

  • FJ – Engine Family
  • 20 – 2.0 Liter Displacement
  • *– The FJ20E engine wes developed before Nissan used the D to DOHC design.
  • E – Multi Point Fuel Injection

General information

Engine Specifications
Engine codeFJ20E
LayoutFour stroke, Inline-4 (Straight-4)
Fuel typeGasoline
Production1981
Displacement2.0 L, 1,900 cm3 (121.43 cu in)
Fuel systemMultiport Fuel Injection
Power adderNone
Max. horsepower150 PS (110 KW; 147.5 HP) at 6,000 rpm
Max. torque181 Nm (18.46 kg·m; 133.58 ft·lb) at 4,000 rpm
Firing order1-3-4-2
Dimensions (L x H x W):
Weight

Cylinder block

The Nissan FJ20E motor has a cast-iron cylinder block. The cylinder block, a monoblock special casting structure, employs a five-bearing-support system. The crankshaft is a special steel forging. The pistons are each fitted with two compression rings and a single oil ring. The crankshaft main journal diameter is 55.0 mm (2.16 in) and crankpin journal diameter is 50.0 mm (1.97 in). Connecting rod center distance is 140.0 mm (5.51 in).

Cylinder block
Cylinder block alloyCast Iron
Compression ratio: 9.5:1 – Europe and Hong Kong
9.1:1 – Other markets
Cylinder bore:89.0 mm (3.5 in)
Piston stroke:80.0 mm (3.15 in)
Number of piston rings (compression / oil):2 / 1
Number of main bearings:5
Cylinder inner diameter (standard):89.000-89.050 mm (3.5039-3.5059 in)
Piston skirt diameter (standard):88.940-88.990 mm (3.5016-3.5035 in)
Piston pin outer diameter:21.991-22.000 mm (0.8658-0.8661 in)
Piston ring side clearance:Top0.030-0.070 mm (0.0012-0.0028 in)
Second0.030-0.070 mm (0.0012-0.0028 in)
Piston ring end gap:Top0.3-0.4 mm (0.012-0.016 in)
Second0.3-0.5 mm (0.012-0.020 in)
Oil0.3-0.6 mm (0.012-0.024 in)
Connecting rod center distance:140.0 mm (5.51 in)
Crankshaft journal diameter:54.942-54.955 mm (2.1631-2.1636 in)
Crankpin diameter:49.961-49.974 mm (1.9670-1.9675 in)
Crankshaft center distance:40.0 mm (1.57 in)

Cylinder head

The cylinder head is made of light and strong aluminum alloy with good cooling efficiency. Camshafts are driven by two-timing chains driven by crankshaft with a jackshaft. Intake valves are 34.5 mm (1.358 in) in diameter and the exhaust valves are 30.0 mm (1.181 in). The intake valve duration is 256°, the exhaust valve duration is 256&deg. Each valve is equipped with double valve springs.

Cylinder head
Valve Arrangement:DOHV, chain drive
Valves:16 (4 valves per cylinder)
Intake/Exhaust duration:256°/256°
Valve head diameter:INTAKE34.5 mm (1.358 in)
EXHAUST30.0 mm (1.181 in)
Valve length:INTAKE125.0-125.5 mm (4.922-4.941 in)
EXHAUST124.96-125.46 mm (4.920-4.939 in)
Valve stem diameter:INTAKE6.960-6.975 mm (0.2740-0.2746 in)
EXHAUST6.938-6.960 mm (0.2731-0.2740 in)
Valve spring free length:INTAKE Outer:45.07 mm (1.7744 in)
Inner:41.66 mm (1.6402 in)
EXHAUST Outer:45.07 mm (1.7744 in)
Inner:41.66 mm (1.6402 in)
Valve lift:INTAKE8.75 mm (0.3444 in)
EXHAUST8.75 mm (0.3444 in)
Camshaft cam height:INTAKE42.835-42.865 mm (1.6864-1.6876 in)
EXHAUST42.835-42.865 mm (1.6864-1.6876 in)
Outer camshaft journal diameter:31.936-31.975 mm (1.2473-1.2589 in)

Tightening torque specs

Tightening torque specs
Cylinder head bolt Step 1: 49-59 Nm; 5.0-6.0 kg·m; 36-43 ft·lb
Step 2: 118-127 Nm; 12.0-13.0 kg·m; 87-94 ft·lb
Step 3: Loosen all bolts
Step 4: 118-127 Nm; 12.0-13.0 kg·m; 87-94 ft·lb
Connecting rod bearing nuts59-64 Nm; 6.0-6.5 kg·m; 43-47 ft·lb
Flywheel bolt137-157 Nm; 14.0-16.0 kg·m; 101-116 ft·lb
Main bearing cap bolt83-94 Nm; 8.5-10.0 kg·m; 61-72 ft·lb
Camshaft sprocket bolt108-137 Nm; 11.0-14.0 kg·m; 80-101 ft·lb
Jack shaft sprocket bolt76-98 Nm; 7.8-10.0 kg·m; 56-72 ft·lb

Maintenance data

Valve clearance (HOT)
Intake valve0.30 mm (0.012 in)
Intake valve0.35 mm (0.014 in)
Valve clearance (COLD)
Intake valve0.20-0.26 mm (0.008-0.010 in)
Exhaust valve0.28-0.34 mm (0.011-0.013 in)
Oil system
Oil consumption , L/1000 km (qt. per miles)up to 0.5 (1 qt. per 1200 miles)
Recommended engine oil 10W-30
20W-40
20W-50
Oil type APISF
Engine oil capacity (Refill capacity) ~ 3.6 l (3-7/8 US qt, 3-1/8 Imp qt)
Oil change interval, km (miles)10,000 (5,000)
Ignition system
Spark plugBP6ES-11 (NGK)

Vehicle applications

ModelYears Produced
Nissan Silvia / Gazelle / Sakura (US110)
Nissan Silvia / Gazelle / Sakura (US12)
Nissan Skyline DR30
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