Engine Mechanical Specifications. Chevrolet Cobalt 2008

For 1990-2009 cars only

Makes 🢒 Chevrolet 🢒 2008 🢒 Cobalt 🢒 Engine 🢒 Engine Mechanical - 2.0L 🢒 Engine Mechanical Specifications

Engine Mechanical Specifications

Application	Specification
Application	Metric	English
General Data
Engine Type	Inline 4 Cylinder
Displacement	2.0 L	122 CID
RPO	LNF
Liter (VIN)	A, M
Bore	85.992-86.008 mm	3.3880-3.3887 in
Stroke	86 mm	3.388 in
Compression Ratio	9.2:1
Balance Shaft
Bearing Clearance	0.030-0.060 mm	0.0012-0.0024 in
Bearing Diameter - Inside - Carrier	20.050-20.063 mm	0.7894-0.7899 in
Bearing Diameter - Outside - Carrier	41.975-41.995 mm	1.6526-1.6534 in
Bearing Journal Diameter	20.000-20.020 mm	0.7874-0.7882 in
Bushing Clearance	0.033-0.102 mm	0.0013-0.0040 in
Bushing Diameter - Inside	36.775-36.835 mm	1.4489-1.4512 in
Bushing Journal Diameter	36.723-36.743 mm	1.4458-1.4466 in
End Play	0.050-0.300 mm	0.0020-0.0118 in
Block
Balance Shaft Bearing Bore Diameter - Carrier	42.000-42.016 mm	1.6535-1.6542 in
Balance Shaft Bushing Bore Diameter	40.763-40.776 mm	1.6048-1.6054 in
Crankshaft Main Bearing Bore Diameter	64.068-64.082 mm	2.5224-2.5229 in
Cylinder Bore Diameter	85.992-86.008 mm	3.3880-3.3887 in
Cylinder Bore Out-of-Round - Maximum	0.010 mm	0.0004 in
Cylinder Bore Taper - Maximum	0.010 mm	0.0004 in
Cylinder Head Deck Surface Flatness - Longitude	0.050 mm	0.002 in
Cylinder Head Deck Surface Flatness - Overall	0.10 mm	0.0039 in
Cylinder Head Deck Surface Flatness - Transverse	0.030 mm	0.0012 in
Camshaft
Camshaft End Play	0.040-0.307 mm	0.0016-0.0121 in
Camshaft Journal Diameter	26.935-26.960 mm	1.0604-1.0614 in
Camshaft Journal Diameter - Front	34.960-34.935 mm	1.3774-1.3764 in
Camshaft Thrust Surface - with Camshaft Actuator Installed	30.020-30.175 mm	1.1828-1.1889 in
Connecting Rod
Connecting Rod Bearing Clearance	0.029-0.073 mm	0.0011-0.0029 in
Connecting Rod Bore Diameter - Bearing End	52.118-52.134 mm	2.0519-2.05252 in
Connecting Rod Bore Diameter - Pin End	23.007-23.017 mm	0.9058-0.9062 in
Connecting Rod Side Clearance	0.070-0.370 mm	0.0028-0.0146 in
Connecting Rod Straightness - Bend - Maximum	0.021 mm	0.0083 in
Connecting Rod Straightness - Twist - Maximum	0.04 mm	0.0157 in
Crankshaft
Connecting Rod Journal Diameter	49.000-49.014 mm	1.9291-1.9297 in
Crankshaft End Play	0.050-0.380 mm	0.0012-0.0150 in
Crankshaft Main Bearing Clearance	0.031-0.067 mm	0.0012-0.0026 in
Crankshaft Main Journal Diameter	55.994-56.008 mm	2.2045-2.2050 in
Cylinder Head
Overall Height - Minimum	128.9 mm	5.07 in
Deck Straightness - in 150 mm (5.91 in)	0.05 mm	0.0019 in
Deck Straightness - in 25 mm (0.985 in)	0.025 mm	0.0009 in
Between Head Bolt Holes	0.030 mm	0.0011 in
Surface Flatness - Block Deck - Longitude	0.050 mm	0.002 in
Surface Flatness - Block Deck - Overall	0.1 mm	0.004 in
Surface Flatness - Block Deck - Transverse	0.030 mm	0.0012 in
Valve Guide Bore - Exhaust	6.000-6.012 mm	0.2362-0.2367 in
Valve Guide Bore - Intake	6.000-6.012 mm	0.2362-0.2367 in
Valve Lifter Bore Diameter - Stationary Lash Adjusters	12.013-12.037 mm	0.4730-0.4739 in
Lubrication System
Oil Pressure - Minimum - @1000 RPM	344.75-551.60 kPa	50-80 psi
Oil Capacity	4.8L	5.0 quarts
Piston Rings
Piston Ring End Gap - First Compression Ring	0.20-0.35 mm	0.0078-0.0138 in
Piston Ring End Gap - Second Compression Ring	0.35-0.55 mm	0.014-0.022 in
Piston Ring End Gap - Oil Control Ring - Rails	0.25-0.75 mm	0.010-0.030 in
Piston Ring to Groove Clearance - First Compression Ring	0.040-0.080 mm	0.0016-0.0031 in
Piston Ring to Groove Clearance - Second Compression Ring	0.003-0.068 mm	0.0001-0.0027 in
Piston Ring to Groove Clearance - Oil Control Ring	0.024-0.176 mm	0.0009-0.0069 in
Piston Ring Thickness - First Compression Ring	1.170-1.190 mm	0.0461-0.0469 in
Piston Ring Thickness - Second Compression Ring	1.471-1.490 mm	0.0579-0.0587 in
Piston Ring Thickness - Oil Control Ring - Rail - Maximum	0.473 mm	0.0186 in
Piston Ring Thickness - Oil Control Ring - Spacer	0.96-1.04 mm	0.0378-0.0409 in
Pistons and Pins
Pin - Piston Pin Clearance to Connecting Rod Bore	0.009-0.023 mm	0.0004-0.0009 in
Pin - Piston Pin Clearance to Piston Pin Bore	0.005-0.015 mm	0.0002-0.0006 in
Pin - Piston Pin Diameter	22.995-23.000 mm	0.9053-0.9055 in
Pin - Piston Pin End Play	0.320-1.278 mm	0.0126-0.0503 in
Piston - Piston Diameter - @14.5 mm up	85.967-85.982 mm	3.3845-3.3851 in
Piston - Piston Pin Bore Diameter	23.005-23.010 mm	0.9057-0.9059 in
Piston - Piston Ring Groove Width - Oil Control	2.001-2.003 mm	0.0788-0.0789 in
Piston - Piston Ring Groove Width - Second	1.52-1.54 mm	0.0598-0.0606 in
Piston - Piston Ring Groove Width - Top	1.23-1.25 mm	0.0484-0.0492 in
Piston - Piston To Bore Clearance	0.010-0.041 mm	0.0004-0.0016 in
Valve System
Valves - Valve Face Runout - Maximum	0.04 mm	0.0016 in
Valves - Valve Seat Runout - Maximum	0.05 mm	0.0020 in
Valves - Valve Stem Diameter - Exhaust	5.935-5.950 mm	0.2337-0.2343 in
Valves - Valve Stem Diameter - Intake	5.955-5.970 mm	0.2344-0.2355 in
Valves - Valve Stem to Guide Clearance - Exhaust	0.050-0.077 mm	0.0020-0.0026 in
Valves - Valve Stem to Guide Clearance - Intake	0.030-0.057 mm	0.0012-0.0022 in
Valve Lifters - Valve Lifter Diameter - Stationary Lash Adjuster	11.986-12.000 mm	0.0005-0.0020 in
Valve Lifters - Valve Lifter-to-Bore Clearance - Stationary Lash Adjuster	0.013-0.051 mm	3.2210-3.2299 in
Valve Springs - Valve Spring Load - Open - @22.5 mm	525.0-575.0 N. - Eng Spec.
Valve Springs - Valve Spring Load - Closed - @32.5 mm	245.0-271.0 N. - Eng Spec.