Engine GM LNF

The 2.0-liter General Motors LNF turbo engine was produced by the concern from 2006 to 2010 and was installed on charged versions of such models as the Pontiac Solstice, Saturn Sky and Chevrolet HHR. On Opel GT or Daewoo G2X cars, this power unit is known as Z20NHH.

The second generation of GM Ecotec includes: LDK, LHU, LNF, LAF, LEA, LE5, LE9.


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
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

  • The main problem of this series of turbine units is their high tendency to detonation.
  • That is why it is important to monitor both the cleanliness of the radiators and the quality of the fuel.
  • In second place in terms of the number of complaints is the rather low resource of the timing chain.
  • If you ignore the crackle of the chains for a long time, then you will have to change expensive phase regulators.
  • Weaknesses here also include a short-lived electronic throttle and high-pressure fuel pump.

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