The 2.0-liter Chevrolet X20D1 or LF3 engine was produced from 2006 to 2014 in Korea and was installed on a number of large models of the concern, but is best known for Epica sedans. This 6-cylinder unit was developed by Daewoo with the participation of Porsche engineers.
One of the features of the engine is the presence of VIS. This is the Variable Intake System, in other words, the intake geometry change system. A method was used to change the length of the intake manifold.
The X series also includes engines: X25D1.
The engine was installed on:
- Chevrolet Epica V250 in 2006 – 2014;
- Daewoo Tosca V250 in 2006 – 2013.
Specifications
| Production years | 2006-2014 |
| Displacement, cc | 1993 |
| Fuel system | distributed injection |
| Power output, hp | 141 |
| Torque output, Nm | 195 |
| Cylinder block | cast iron R6 |
| Block head | aluminum 24v |
| Cylinder bore, mm | 75 |
| Piston stroke, mm | 75.2 |
| Compression ratio | 10.2 |
| Features | VIS |
| Hydraulic lifters | yes |
| Timing drive | two chains |
| Phase regulator | no |
| Turbocharging | no |
| Recommended engine oil | 5W-30 |
| Engine oil capacity, liter | 6.4 |
| Fuel type | petrol |
| Euro standards | EURO 3/4 |
| Fuel consumption, L/100 km (for Chevrolet Epica 2008) — city — highway — combined |
11.4 6.3 8.2 |
| Engine lifespan, km | ~250 000 |
Disadvantages of the X20D1 engine
- The most famous engine problem is the wedge of the oil pump, which is fraught with turning the liners;
- The catalyst has a small resource, the crumbs of which are drawn into the cylinders;
- The causes of the oil burner are also valve seals, stuck piston rings;
- The cooling system is considered the weak point of the motor: pipes flow, the tank bursts;
- Engine crankcase cracks easily, e.g. if drain plug is overtightened;
- Timing chains run for quite a long time, but the hydraulic tensioner can give up much earlier;
- Hydraulic lifters are not famous for their special durability, as well as an oil pressure sensor.
