From 2006 to 2010, the company produced the 2.0-liter General Motors LNF turbo engine, which was fitted to charged versions of vehicles like the Pontiac Solstice, Saturn Sky, and Chevrolet HHR. This power unit is referred to as Z20NHH on Opel GT or Daewoo G2X vehicles.
GM Ecotec’s second generation comprises LDK, LHU, LNF, LAF, LEA, LE5, and LE9.
Specifications
| Production years | 2006-2010 |
| Displacement, cc | 1998 |
| Fuel system | direct injection |
| Power output, hp | 260 |
| Torque output, Nm | 353 |
| Cylinder block | aluminum R4 |
| Block head | aluminum 16v |
| Cylinder bore, mm | 86 |
| Piston stroke, mm | 86 |
| Compression ratio | 9.2 |
| Features | DOHC |
| Hydraulic lifters | no |
| Timing drive | chain |
| Phase regulator | Dual CVCP |
| Turbocharging | BorgWarner K04 |
| Recommended engine oil | 5W-30 |
| Engine oil capacity, liter | 6.0 |
| Fuel type | petrol |
| Euro standards | EURO 4 |
| Fuel consumption, L/100 km (for Pontiac Solstice GXP 2008) — city — highway — combined |
12.4 8.4 10.7 |
| Engine lifespan, km | ~200 000 |
| Weight, kg | 163 |
The engine was installed on:
- Chevrolet Cobalt 1 (GMX001) in 2007 – 2010;
- Chevrolet HHR 1 (GMT001) in 2007 – 2010;
- Pontiac Solstice 1 (GMX020) in 2006 – 2009;
- Saturn Sky 1 (GMX023) in 2006 – 2009;
- (as Z20NHH) Daewoo G2X 1 (M07) in 2007 – 2009;
- (as Z20NHH) Opel GT B (M07) in 2007 – 2009.
Disadvantages of the GM LNF engine
This series of turbine units’ high propensity for detonation is their primary issue.
For this reason, it’s critical to keep an eye on both the fuel’s quality and the radiators’ cleanliness.
The timing chain’s relatively low resource ranks second in terms of complaints.
You will need to replace costly phase regulators if you ignore the chains’ crackling for an extended period of time.
A short-lived electronic throttle and a high-pressure fuel pump are further flaws.