The GM X20SED is a 2.0 l (1,998 cc, 121.93 cu-in) straight-four 4-stroke natural aspirated gasoline small-displacement engine from of the GM Family II engines, developed by Holden and used in the Daewoo Nubira and Leganza.
The GM X20SED engine uses a cast-iron engine block with a cast-iron crankshaft and aluminum head with dual overhead camshafts (DOHC) and four valves per cylinder (16 valves in total). This engine is equipped with the Multi-port fuel injection system and a direct ignition system (DIS).
It has an 86.0 mm (3.39 in) cylinder bore and 86.0 mm (3.39 in) piston stroke. Compression ratio rating is 9.6:1. The X20SED engine produces 133 PS (98 kW; 131 HP) of maximum horsepower and 184 Nm (18.77 kg·m; 135.79 ft·lb) of peak torque.
The breakdown of the engine code is as follows:
- X – Euro 2 engine
- 20 – 2.0 Liter displacement
- S – Comression ratio from 9.5 a 10:1
- E – Multi Point Fuel Injection system
- D
General information
| Engine Specifications | |
| Engine code | X20SED |
| Layout | Four stroke, Inline-4 (Straight-4) |
| Fuel type | Gasoline (petrol) |
| Production | – |
| Displacement | 2.0 L, 1,998 cm3 (121.93 cu in) |
| Fuel system | Multipoint fuel injection (MFI) |
| Power adder | None |
| Power output | 90 PS (66 kW; 89 HP) at 5,600 rpm |
| Torque output | 125 Nm (12.7 kg·m; 92.2 ft·lb) |
| Firing order | 1-3-4-2 |
| Dimensions (L x W x H): | – |
| Weight | – |
Cylinder block
The engine used a cast-iron cylinder block and a cast-iron crankshaft five-bearings supported system. Bore and stroke are 86.0 mm (3.39 in) cylinder bore and 86.0 mm (3.39 in). Compression ratio rating is 9.6:1.
| Cylinder block | ||
| Cylinder block alloy | Cast-iron | |
| Compression ratio: | 9.6:1 | |
| Cylinder bore: | 86.0 mm (3.39 in) | |
| Piston stroke: | 86.0 mm (3.39 in) | |
| Number of piston rings (compression / oil): | 2 / 1 | |
Cylinder head
The cylinder head is made of an aluminum alloy. The X20SED engine has chain-driven dual overhead camshafts.
| Cylinder head | ||
| Cylinder head alloy: | Aluminium | |
| Valve Arrangement: | DOHC | |
| Valves: | 16 (4 valves per cylinder) | |
| Valve timing: | INTAKE | – |
| EXHAUST | – | |
| Valve head diameter: | INTAKE | 32.0 mm (1.1417 in) |
| EXHAUST | 29.0 mm (1.2598 in) | |
Maintenance data
| 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 |
API SG / CD CCMC G4 / G5 |
| Engine oil capacity (Refill capacity) | 3.8 l (4 US. qt.) |
| Oil change interval, km (miles) | 15,000 (9,000) |
| Ignition system | |
| Spark plug | Bosch FLR8LDCU |
Vehicle applications
| Model | Years Produced |
| Daewoo Nubira (J100, J150) | 1998–2005 |
| Daewoo Leganza (KLAV) | 1997-2007 |
| Daewoo Evanda (KLAL) | – |
| Chevrolet Vivant 2.0 LS | – |
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daewoo 2.0l fuel injection 1 end 4 ar ded