The Nissan FJ20ET 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 FJ20ET motor was produced since 1983. From 1984 the engine was equipped with intercooler.
The Nissan FJ20ET engine has DOHC (double overhead camshaft) design with 16 valves (4 valves per cylinder), cast iron cylinder block and an aluminum cylinder head; five-bearing crankshaft. The engine is equipped with Multiport Fuel Injection system (4 x 375 cc/min fuel injectors), ignition system with a mechanical distributor and Garrett T3 turbocharger, since 1984 with intercooler.
The FJ20ET engine has an 89.0 mm (3.5 in) cylinder bore and 80.0 mm (3.15 in) piston stroke. The compression ratio is 8.0:1 for the engine without intercooler and 8.5:1 with intercooler. The FJ20ET without intercooler produced 190 PS (140 kW; 187 HP) at 6,400 rpm of output power and 225 Nm (22.95 kg·m; 166.05 ft·lb) at 4,800 rpm of torque, the later motor version with intercooler produced 205 PS (151 kW; 202 HP) at 6,400 rpm and 245 Nm (24.99 kg·m; 180.81 ft·lb) at 4,400 rpm.
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
- T – Turbocharged
General information
| Engine Specifications | |
| Engine code | FJ20ET |
| Layout | Four stroke, Inline-4 (Straight-4) |
| Fuel type | Gasoline |
| Production | 1983 |
| Displacement | 2.0 L, 1,900 cm3 (121.43 cu in) |
| Fuel system | Multiport Fuel Injection |
| Power adder | Garrett T3 turbocharger |
| Max. horsepower | 190 PS (140 kW; 187 HP) at 6,400 rpm 205 PS (151 kW; 202 HP) at 6,400 rpm |
| Max. torque | 225 Nm (22.95 kg·m; 166.05 ft·lb) at 4,800 rpm 245 Nm (24.99 kg·m; 180.81 ft·lb) at 4,400 rpm |
| Firing order | 1-3-4-2 |
| Dimensions (L x H x W): | – |
| Weight | 180 kg (396.8 lbs) |
Cylinder block
The Nissan FJ20ET 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 alloy | Cast Iron | |
| Compression ratio: | 8.0:1 – without intercooler 9.5:1 – with intercooler | |
| 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: | Top | 0.030-0.070 mm (0.0012-0.0028 in) |
| Second | 0.030-0.070 mm (0.0012-0.0028 in) | |
| Piston ring end gap: | Top | 0.3-0.4 mm (0.012-0.016 in) |
| Second | 0.3-0.5 mm (0.012-0.020 in) | |
| Oil | 0.3-0.6 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°. Each valve is equipped with double valve springs.
| Cylinder head | ||
| Valve Arrangement: | DOHV, chain drive | |
| Valves: | 16 (4 valves per cylinder) | |
| Intake/Exhaust duration: | – | |
| Valve head diameter: | INTAKE | 34.5 mm (1.358 in) |
| EXHAUST | 30.0 mm (1.181 in) | |
| Valve lift: | INTAKE | 8.75 mm (0.3444 in) |
| EXHAUST | 8.75 mm (0.3444 in) | |
Maintenance data
| Valve clearance (HOT) | |
| Intake valve | 0.30 mm (0.012 in) |
| Intake valve | 0.35 mm (0.014 in) |
| Valve clearance (COLD) | |
| Intake valve | 0.20-0.26 mm (0.008-0.010 in) |
| Exhaust valve | 0.28-0.34 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 API | SF |
| 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 plug | BP6ES-11 (NGK) |
Vehicle applications
| Model | Years Produced |
| Skyline RS/RS-X/RS-X Turbo C (DR30) | – |
| Nissan Silvia / Gazelle RS-X; Turbo C (S12) | – |
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