Engine GM LDK

The General Motors LDK 2.0-liter turbo engine was produced in the USA from 2008 to 2013 and was installed on charged Buick Regal modifications, including Hirsch Performance versions. This turbo engine on Opel cars was known under its own index A20NHT.

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


Production years 2008-2013
Displacement, cc 1998
Fuel system direct injection
Power output, hp 217 – 257
Torque output, Nm 350 – 400
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 5
Fuel consumption, L/100 km (for Buick Regal 2010)
— city
— highway
— combined
Engine lifespan, km ~220 000
Weight, kg 163

The engine was installed on:

  • Buick Regal 5 (GMX350) in 2008 – 2013.

Disadvantages of the GM LDK engine

  • The main problem with turbo engines of this line is their high tendency to knock.
  • Therefore, it is extremely important to monitor both the quality of the fuel and the cleanliness of the radiators.
  • Another well-known problem is the rather low resource of the timing chain.
  • And if you do not pay attention to the crackling of the chains, then you will have to change the phase regulators.
  • The weak points of the engine include not the most durable electronic throttle and injection pump.

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