2007-2010 Chevrolet Cobalt, HHR, Pontiac Solstice, and Saturn Skye 2.0L Remanufactured Engine

Description

Propel regional express courier transport coupes and specialized fleet support roadsters across continuous highway transit routes under 175 PSI cylinder compression force without detonation through the GM Ecotec LNF 2.0L Remanufactured Engine engineered for 2007 to 2010 Chevrolet Cobalt SS, HHR SS, Pontiac Solstice GXP, and Saturn Sky Redline commercial vehicles. This turbocharged direct-injection DOHC platform restores massive mid-range power.

Cast using a sand-cast A356-T6 aluminum alloy block with cast-in iron cylinder liners, this Gen II Ecotec casting incorporates an aluminum lower crankcase structural bedplate that halts bottom-end deflection. A forged 4340 steel crankshaft turns within tri-metal bearings, linked to forged steel connecting rods and dish hypereutectic pistons with graphite skirt coatings. Decks receive an Ra 30 finish for MLS gasket sealing. Dry weight registers at 315 lbs with a 5.0-quart capacity aluminum oil pan.

Key Features of GM Ecotec LNF 2.0L

Specialized fleet managers buy GM Ecotec LNF 2.0L remanufactured engine packages to keep turbocharged express vehicles and rapid response units operating on schedule. Every remanufactured long block undergoes vacuum decay testing to guarantee total fluid circuit separation before crate departure.

• Direct cylinder fuel injection atomizes high-pressure gasoline to suppress detonation under boost
• Dual variable valve timing phasers continuously adjust intake and exhaust camshafts under load
• Piston cooling oil squirt jets spray cylinder crowns to control combustion temperatures
• Sodium-filled exhaust valves resist extreme heat during continuous high-boost highway operation
• 0.0011 to 0.0018 inch main bearing clearances maintain solid hydrodynamic lubrication film strength
• Multi-layer steel cylinder head gaskets maintain combustion seals across extreme summer transit heat
• Computer balanced rotating packages protect GM Ecotec LNF 2.0L driveline parts from vibration

Ecotec LNF Operational Combustion Limits

Operating lubricant pressure produces 20 to 25 PSI during warm idle and expands to 50 through 65 PSI at 3000 RPM cruise speeds. Internal coolant temperatures stabilize between 185°F and 200°F through regulated cross-flow cooling circulation. This 2.0-liter turbocharged direct-injection engine outputs 260 horsepower at 5300 RPM and 260 lb-ft continuous torque at 2000 RPM with a 9.2:1 compression ratio. Cylinder cranking pressure measures between 170 and 185 PSI across all four chambers. The cooling system rejects 2800 BTU per minute during full-throttle boost cycles.

LNF Crankshaft Transmission Alignment Thresholds

A 6-bolt rear crankshaft flange mounts flush to factory manual flywheels or automatic transaxle driveplates. Measured crankshaft thrust endplay checks out between 0.0030 and 0.0070 inches. The 1.102-inch front crankshaft snout features a single keyway to position the timing chain sprocket and harmonic balancer, holding true accessory drive serpentine belt pulley alignment.

LNF Fleet Lubricant Servicing Protocols

Technicians must prime the engine oil pump prior to first startup by cranking the starter without ignition until oil pressure warning lamps extinguish. Fill the crankcase with 5W-30 full synthetic motor oil meeting GM dexos standards. This production engine is not engineered for turbo upgrades exceeding 20 PSI boost, nitrous injection, or competitive drag racing.

• Check crankcase oil level and coolant tank fluid volume each shift before driving
• Drain break-in motor oil and install fresh oil filter after 500 initial miles
• Perform routine oil and filter changes every 3500 miles during commercial transit cycles

LNF Commercial Warranty Freight Manifest

Commercial fleet purchasers receive a 3-Year / 100,000-Mile commercial fleet warranty covering structural casting and internal moving components. The heavy-duty wood crate contains one remanufactured long block engine, a complete engine install gasket set, spark plug well seals, front timing cover seals, dyno test documentation, and priming instructions.