GM 2.0 Liter Turbocharged Ecotec I4 LNF Engine
The LNF is a 2.0-liter, four-cylinder engine was designed and manufactured by General Motors for use in various vehicles, including two-seater sports coupes, compact sedans, and was also utilized by non-GM vehicles, such as the Fisker Karma.
|Displacement:||2.0L / 124 cu. in.|
|Aspiration:||Forced Induction (Turbocharger)|
|Vehicles:||Chevrolet Cobalt SS, HHR SS, Daewoo G2X Turbo, Opel GT, Pontiac Solstice GXP, Saturn Sky Red Line|
|Introduced:||2006 Model Year|
|Discontinued:||2010 Model Year (GM Vehicle Production)|
|Assembly:||Spring Hill, Tennesse|
The turbocharged 2.0-liter LNF engine is a member of the second-generation of the Ecotec engine family, which traces its roots to four-cylinders designed by Opel and Saab. Its line of successors includes the 2.0-liter LTG I4 and 2.0-liter LSY I4, which are both utilized by vehicles currently in production.
Notably, the LNF had an output rating of 260 horsepower and 260 pound-feet of torque in every GM vehicle application that utilized it. The positive crankcase ventilation (PCV) system was not quite as refined as it is in newer turbo-four applications, as such, oil buildup was an issue for the LNF, particularly clogged valves, which were also a bi-product of the direct-injection architecture.
|GM RPO code:||LNF|
|Configuration & Cylinders:||I-4|
|Vehicle Engine Orientation:||Longitudinal or Transverse|
|Valve configuration:||Overhead Valve (OHV)|
|Valves per cylinder:||2|
|Assembly site:||GM Tonawanda plant, New York, USA|
|Firing order:||1 – 8 – 7 – 2 – 6 – 5 – 4 – 3|
|Bore x stroke:||4.065 x 3.622-inches (103.25 x 92 mm)|
|Fuel system:||SIDI (Spark Ignited Direct Injection)|
|Fuel Type:||Premium Fuel|
|Maximum Engine Speed:||6,000 RPM|
|Cylinder head:||Cast Aluminum|
|Main bearing caps:||Iron|
|Connecting rods:||Forged Steel|
|Positive Crankcase Ventilation|
|Year||Vehicle||Transmission||Power (hp / kW @ RPM)||Torque (lb-ft / Nm @ RPM)|
|2008-2010||Chevrolet Cobalt SS||5-Speed Manual (F35) or 4-Speed Auto (4T45E)||260 / 194 @ 5300||260 / 353 @ 2000|
|2008-2010||Chevrolet HHR SS||5-Speed Manual (F35)||260 / 194 @ 5300||260 / 353 @ 2000|
|2006-2009||Daewoo G2X Turbo||5-Speed Manual (AR5) or 5-Speed Auto (5L40-E)||260 / 194 @ 5300||260 / 353 @ 2000|
|2009||Elfin T5||5-Speed Manual||264 / 197 @ 5300||259 / 351 @ 2000|
|2012 Fisker||Karma||1-Speed Auto (Hybrid)||260 / 194 @ 5300||260 / 353 @ 2000|
|2006-2009||Opel GT||5-Speed Manual (AR5) or 5-Speed Auto (5L40-E)||260 / 194 @ 5300||260 / 353 @ 2000|
|2006-2009||Pontiac Solstice GXP||5-Speed Manual (AR5) or 5-Speed Auto (5L40-E)||260 / 194 @ 5300||260 / 353 @ 2000|
|2006-2009||Saturn Sky Red Line||5-Speed Manual (AR5) or 5-Speed Auto (5L40-E)||260 / 194 @ 5300||260 / 353 @ 2000|
As mentioned, the LNF is a member of the second-gen Ecotec engine family, which also includes the following (note: 2.2 and 2.4-liter engines are also a part of the four-cylinder Ecotec family):
- 2.0L LDK
- 2.0L LHU
- 2.2 L61
- 2.2 LAP
- 2.4 LE5
- 2.4 LAT
- 2.4 LE9
- 2.4 LAF
- 2.4 LEA
- 2.4 LUK
The GXP coupe was built for a single year. Including Ecotec engines, Aisin transmissions, suspension components, and more.
2.0L I4 Turbo LNF News
The GXP coupe was built for a single year.
Including Ecotec engines, Aisin transmissions, suspension components, and more.