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HOMESERVICE MANUALSCHEVROLET2006COBALT SS, 4D SEDAN, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 186 (ENGINE MECHANICAL - 3.5L (L66))SPECIFICATIONSENGINE MECHANICAL SPECIFICATIONS
2006 Chevrolet Cobalt SS, 4D Sedan, Standard

Engine Mechanical Specifications

2006 Chevrolet Cobalt SS, 4D Sedan, StandardSECTION Engine Mechanical Specifications
WARNING: This page is about a different car, the 2005 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
Engine Mechanical Specifications

Application Specification
Metric English
General
  • Engine Type
 Water Cooled, 4-Stroke, SOHC Gasoline Engine
  • Displacement
 3471 cc 212 cu in
  • RPO
 L66
  • VIN
 U
  • Cylinder Arrangement
 60° V6 Transverse
  • Bore
 89.0 mm 3.50 in
  • Stroke
 93.0 mm 3.66 in
  • Compression Ratio
 10.0:1
  • Engine Compression Test - Minimum
 990 kPa 145 psi
  • Engine Compression Test - Maximum Variation
 200 kPa 29 psi
  • Idle Speed
 680-780 RPM
  • Firing Order
 1-4-2-5-3-6
  • Spark Plug Gap - Production
 1.0-1.1 mm 0.039-0.043 in
  • Spark Plug Gap - Service
 1.3 mm 0.051 in
  • Ignition Timing
 8-12 BTDC at 680-780 RPM
Block
  • Crankshaft Main Bearing Bore Diameter
 77.0-77.024 mm 3.031-3.032 in
  • Cylinder Bore Diameter - Production
 89.0-89.015 mm 3.5039-3.5045 in
  • Cylinder Bore Diameter - Service
 89.065 mm 3.5065 in
  • Cylinder Bore Diameter - 0.25 mm (0.0098 in) Oversize Piston
 89.25-89.265 mm 3.5138-3.5144 in
  • Cylinder Bore Taper - Service
 0.05 mm 0.002 in
  • Cylinder Head Deck Surface Flatness - Production
 0.07 mm 0.003 in
  • Cylinder Head Deck Surface Flatness - Service
 0.1 mm 0.004 in
  • Cylinder Reboring Limit - Service
 0.25 mm 0.01 in
  • Rear Housing-to-Oil Seal Clearance
 0.5-0.8 mm 0.019-0.031 in
Camshaft
  • Camshaft-to-Cap Clearance - Production
 0.05-0.2 mm 0.002-0.008 in
  • Camshaft-to-Cap Clearance - Service
 0.2 mm 0.008 in
  • End Play - Production
 0.05-0.20 mm 0.002-0.008 in
  • End Play - Service
 0.2 mm 0.008 in
  • Journal Diameter
 42.935-42.950 mm 1.690-1.691 in
  • Journal Out-of-Round - Maximum
 0.03 mm 0.0012 in
  • Camshaft-to-Journal Clearance - Production
 0.05-0.089 mm 0.002-0.0035 in
  • Camshaft-to-Journal Clearance - Service
 0.15 mm 0.006 in
  • Lobe Height - Intake Primary
 35.041 mm 1.3796 in
  • Lobe Height - Intake Mid
 36.445 mm 1.4348 in
  • Lobe Height - Intake Secondary
 35.284 mm 1.3891 in
  • Lobe Height - Exhaust
 36.326 mm 1.4302 in
  • Lobe Lift - Intake Primary
 5.041 mm 0.1984 in
  • Lobe Lift - Intake Mid
 6.323 mm 0.2489 in
  • Lobe Lift - Intake Secondary
 5.284 mm 0.2080 in
  • Lobe Lift - Exhaust
 6.326 mm 0.2490 in
  • Runout - Production
 0.03 mm 0.001 in
  • Runout - Service
 0.04 mm 0.002 in
Cooling System
  • Thermostat Begins-to-Open Temperature
 76-80°C 168-176°F
  • Thermostat Full Open Temperature
 90°C 194°F
  • Water Pump Displacement - at 6,000 RPM Per Minute
 176 liters 186 qts
Connecting Rod
  • Bearing Clearance - Production
 0.02-0.044 mm 0.0008-0.0017 in
  • Bearing Clearance - Service
 0.05 mm 0.002 in
  • Bore Diameter - Bearing End
 58 mm 2.28 in
  • Bore Diameter - Pin End
 21.97-21.976 mm 0.865-0.8652 in
  • Bore Out-of-Round - Bearing End
 0.005 mm 0.0002 in
  • Length
 158.5 mm 6.24 in
  • End Play - Production
 0.15-0.35 mm 0.006-0.014 in
  • End Play - Service
 0.45 mm 0.018 in
  • Connecting Rod Bolt - Difference in Diameter - Service
 0.0-0.1 mm 0.0-0.004 in
Crankshaft
  • Connecting Rod Journal Diameter
 54.976-55.0 mm 2.1644-2.1654 in
  • Connecting Rod Journal Out-of-Round - Production
 0.005 mm 0.0002 in
  • Connecting Rod Journal Out-of-Round - Service
 0.01 mm 0.0004 in
  • Connecting Rod Journal Taper - Production
 0.005 mm 0.0002 in
  • Connecting Rod Journal Taper - Service
 0.01 mm 0.0004 in
  • Connecting Rod Journal Width
 17.55-17.75 mm 0.691-0.699 in
  • End Play - Production
 0.1-0.35 mm 0.004-0.014 in
  • End Play - Service
 0.45 mm 0.018 in
  • Main Bearing Clearance - Production
 0.02-0.044 mm 0.0008-0.0017 in
  • Main Bearing Clearance - Service
 0.05 mm 0.002 in
  • Main Journal Diameter
 71.976-72.0 mm 2.8337-2.8346 in
  • Main Journal Out-of-Round - Production
 0.005 mm 0.0002 in
  • Main Journal Out-of-Round - Service
 0.01 mm 0.0004 in
  • Main Journal Taper - Production
 0.005 mm 0.0002 in
  • Main Journal Taper - Service
 0.01 mm 0.0004 in
  • Runout - Production - Journals 1 and 4
 0.02 mm 0.0008 in
  • Runout - Production - Journals 2 and 3
 0.025 mm 0.001 in
  • Runout - Service
 0.03 mm 0.0012 in
  • Thrust Surface Distance
 0.1-0.35 mm 0.004-0.014 in
  • Thrust Surface Runout
 0.45 mm 0.018 in
Cylinder Head
  • Combustion Chamber Volume
 51.3 cu cm 3.13 cu in
  • Cylinder Head Height/Thickness
 120.95-121.05 mm 4.762-4.766 in
  • Surface Flatness - Block Deck
 0.05 mm 0.002 in
  • Surface Flatness - Exhaust Manifold Deck
 0.05 mm 0.002 in
  • Surface Flatness - Intake Manifold Deck
 0.05 mm 0.002 in
  • Resurface Limit - Block Deck
 0.2 mm 0.008 in
  • Valve Guide Bore - Exhaust - Production
 5.515-5.53 mm 0.2171-0.2178 in
  • Valve Guide Bore - Exhaust - Service
 5.55 mm 0.219 in
  • Valve Guide Bore - Intake - Production
 5.515-5.530 mm 0.2171-0.2177 in
  • Valve Guide Bore - Intake - Service
 5.55 mm 0.219 in
  • Valve Guide Installed Height - Exhaust
 20.63-21.63 mm 0.812-0.852 in
  • Valve Guide Installed Height - Intake
 21.2-22.2 mm 0.835-0.874 in
Lubrication System
  • Oil Type
 5W-20
  • Oil Capacity - with Engine Overhaul
 5.0 liters 5.2 qts
  • Oil Capacity - with Filter
 4.3 liters 4.5 qts
  • Oil Capacity - without Filter
 4.0 liters 4.2 qts
  • Oil Pressure - at Idle and Engine at 80°C (176°F)
 70 kPa 10 psi
  • Oil Pressure - at 3,000 RPM and Engine at 80°C (176°F)
 490 kPa 71 psi
Oil Pump
  • Displacement - at 6,000 RPM Per Minute
 58.4 liters 61.7 qts
  • Rotor Diameter - Outer
 84 mm 3.307 in
  • Rotor Pocket - Depth - Inner
 12.72 mm 0.5 in
  • Rotor Pocket - Depth - Outer
 12.78 mm 0.503 in
  • Inner Rotor-to-Outer Rotor Radial Clearance - New
 0.04-0.16 mm 0.002-0.0063 in
  • Inner Rotor-to-Outer Rotor Radial Clearance - Service Limit
 0.2 mm 0.008 in
  • Housing-to-Rotor Axial Clearance - New
 0.02-0.07 mm 0.001-0.003 in
  • Housing-to-Rotor Axial Clearance - Service Limit
 0.12 mm 0.005 in
  • Housing-to-Outer Rotor Radial Clearance - New
 0.10-0.19 mm 0.004-0.007 in
  • Housing-to-Outer Rotor Radial Clearance - Service Limit
 0.2 mm 0.008 in
Piston Rings
  • End Gap - Top - Production
 0.2-0.35 mm 0.008-0.014 in
  • End Gap - Top - Service
 0.6 mm 0.024 in
  • End Gap - Second - Production
 0.4-0.55 mm 0.0016-0.022 in
  • End Gap - Second - Service
 0.7 mm 0.028 in
  • End Gap - Oil - Production
 0.2-0.7 mm 0.008-0.028 in
  • End Gap - Oil - Service
 0.8 mm 0.031 in
  • First Compression Ring - Production
 0.02-0.35 mm 0.008-0.014 in
  • First Compression Ring - Service
 0.6 mm 0.024 in
  • Second Compression Ring - Production
 0.4-0.055 mm 0.0016-0.0022 in
  • Second Compression Ring - Service
 0.7 mm 0.028 in
  • Oil Control Ring - Production
 0.2-0.7 mm 0.008-0.028 in
  • Oil Control Ring - Service
 0.8 mm 0.031 in
  • Piston Ring-to-Groove Clearance - Top - Production
 0.055-0.08 mm 0.0022-0.0031 in
  • Piston Ring-to-Groove Clearance - Top - Service
 0.15 mm 0.006 in
  • Piston Ring-to-Groove Clearance - Second - Production
 0.03-0.055 mm 0.0012-0.0022 in
  • Piston Ring-to-Groove Clearance - Second - Service
 0.13 mm 0.005 in
  • First Compression Ring - Production
 0.055-0.08 mm 0.0022-0.0031 in
  • First Compression Ring - Service
 0.13 mm 0.005 in
  • Second Compression Ring - Production
 0.03-0.055 mm 0.0012-0.0022 in
  • Second Compression Ring - Service
 0.13 mm 0.005 in
  • First Compression Ring Height
 1.2 mm 0.05 in
  • First Compression Width
 3.1 mm 0.12 in
  • Second Compression Height
 1.2 mm 0.05 in
  • Second Compression Width
 3.4 mm 0.13 in
Pistons
  • Diameter - Production - Measure 16 mm (0.63 in) from Bottom of Skirt
 88.975-88.985 mm 3.5029-3.5033 in
  • Diameter - Service
 88.965 mm 3.5026 in
  • Diameter - 0.25 mm Oversize Piston
 89.225-89.235 mm 3.5128-3.5132 in
  • Out-of-Round - Measured by Clearance to Cylinder Bore
 0.08 mm 3.15 in
  • Pin Bore Diameter
 21.96-22.03 mm 0.864-0.867 in
  • Ring Groove Width - Top - Production
 1.24-1.25 mm 0.0488-0.0492 in
  • Ring Groove Width - Top - Service
 1.27 mm 0.05 in
  • Ring Groove Width - Second - Production
 1.22-1.23 mm 0.048-0.0484 in
  • Ring Groove Width - Second - Service
 1.25 mm 0.049 in
  • Ring Groove Width - Oil - Production
 2.805-2.825 mm 0.1104-0.1112 in
  • Ring Groove Width - Oil - Service
 2.85 mm 0.112 in
  • Piston to Bore Clearance - Production
 0.015-0.04 mm 0.0006-0.0016 in
  • Piston to Bore Clearance - Service
 0.08 mm 0.003 in
Piston Pin
  • Clearance to Connecting Rod Bore - Production
 0.005-0.014 mm 0.0002-0.0006 in
  • Clearance to Connecting Rod Bore - Service
 0.019 mm 0.0007 in
  • Clearance to Piston Pin Bore - Production
 -0.005 to +0.001 mm -0.0002 to +0.00004 in
  • Clearance to Piston Pin Bore - Service
 0.004 mm 0.0002 in
  • Diameter - Production
 21.962-21.965 mm 0.8646-0.8648 in
  • Diameter - Service
 21.954 mm 0.8643 in
  • Length
 53.77-54.23 mm 2.116-2.135 in
Starter
  • Rated Output
 1.6 kW 2.15 hp
Timing Belt Tensioner
  • Tensioner Rod Extended
 48.8-58.7 mm 1.92-2.31 in
  • Tensioner Spring Load - Rod Extended
 151 N at 58.7 mm 34 lb at 2.31 in
  • Tensioner Spring Load - Rod Partially Extended
 185 N at 54.4 mm 41.5 lb at 2.14 in
  • Tensioner Spring Load - Rod Retracted
 228 N at 48.8 mm 51 lb at 1.92 in
Valves and Valve Seats
  • Clearance - Cold - Exhaust
 0.28-0.32 mm 0.011-0.013 in
  • Clearance - Cold - Intake
 0.20-0.24 mm 0.008-0.009 in
  • Face Angle - Exhaust
 40-60 degrees
  • Face Angle - Intake
 45-60-70 degrees
  • Face Runout - Maximum
 0.04 mm 0.0016 in
  • Face Width
 2.121 mm 0.083 in
  • Head Diameter - Exhaust
 29.9-30.1 mm 1.177-1.185 in
  • Head Diameter - Intake
 34.9-35.1 mm 1.374-1.382 in
  • Key Groove Diameter
 4.595-4.60 mm 0.180-0.181 in
  • Length - Exhaust
 113.9-114.5 mm 4.484-4.508 in
  • Length - Intake
 115.7-116.3 mm 4.555-4.579 in
  • Seat Angle - Exhaust
 30-45-60 degrees
  • Seat Angle - Intake
 30-45-67 degrees
  • Seat Width - Exhaust - Production
 1.25-1.55 mm 0.049-0.061 in
  • Seat Width - Exhaust - Service
 2.0 mm 0.079 in
  • Seat Width - Intake - Production
 1.25-1.55 mm 0.049-0.061 mm
  • Seat Width - Intake - Service
 2.0 mm 0.079 in
  • Stem Diameter - Exhaust - Production
 5.45-5.46 mm 0.2146-0.215 in
  • Stem Diameter - Exhaust - Service
 5.42 mm 0.2134 in
  • Stem Diameter - Intake - Production
 5.485-5.495 mm 0.2159-0.2163 in
  • Stem Diameter - Intake - Service
 5.455 mm 0.2148 in
  • Stem Installed Height - Exhaust - Production
 46.68-47.48 mm 1.838-1.869 in
  • Stem Installed Height - Exhaust - Service
 47.73 mm 1.879 in
  • Stem Installed Height - Intake - Production
 46.75-47.55 mm 1.841-1.872 in
  • Stem Installed Height - Intake - Service
 47.8 mm 1.882 in
  • Stem-to-Guide Clearance - Exhaust - Production
 0.055-0.08 mm 0.0022-0.0031 in
  • Stem-to-Guide Clearance - Exhaust - Service
 0.11 mm 0.004 in
  • Stem-to-Guide Clearance - Intake - Production
 0.02-0.045 mm 0.0008-0.0018 in
  • Stem-to-Guide Clearance - Intake - Service
 0.08 mm 0.003 in
Valve Guides
  • Valve Guide Installed Height - Intake
 21.20-22.2 mm 0.835-0.874 in
  • Valve Guide Installed Height - Exhaust
 20.63-21.63 mm 0.812-0.852 in
Valve Lash Adjuster
  • Free Length
 47.41 mm 1.87 in
  • Spring Load
 49 N at 45.5 mm 11 lb at 1.79 in
Rocker Arms and Shafts
  • Bore Diameter
 20.02-20.05 mm 0.788-0.789 in
  • Arm-to-Shaft Clearance - Exhaust - Production
 0.026-0.077 mm 0.001-0.003 in
  • Arm-to-Shaft Clearance - Exhaust - Service
 0.077 mm 0.003 in
  • Arm-to-Shaft Clearance - Intake - Production
 0.026-0.067 mm 0.001-0.0026 in
  • Arm-to-Shaft Clearance - Intake - Service
 0.067 mm 0.0026 in
  • Ratio
 1.5:1
  • Shaft Diameter
 20.0 mm 0.7874 in
  • Intake Rocker Arm Test - Regulator Pressure Setting
 440-540 kPa 64-78 psi
Valve Springs
  • Coil Thickness - Exhaust
 3.5 mm 0.137 in
  • Coil Thickness - Intake
 3.6 mm 0.141 in
  • Diameter - Inside
 16.2 mm 0.637 in
  • Diameter - Outside - Exhaust
 23.2 mm 0.913 in
  • Diameter - Outside - Intake
 23.4 mm 0.921 in
  • Free Length - Exhaust
 51.06 mm 2.01 in
  • Free Length - Intake
 51.54 mm 2.029 in
  • Installed Height
 43.4 mm 1.708 in
RENDER: 1.0x

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