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3100 (Gen 3) Specifications : LG8

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  • 3100 (Gen 3) Specifications : LG8

    Application

    Specification

    Metric

    English

    General Data
    Engine Type

    60 V-6

    Displacement

    3.1L

    191 cu in

    RPO (VIN Code)

    L82 (M)

    Bore

    89 mm

    3.50 in

    Stroke

    84 mm

    3.31 in

    Deck Height

    224 mm

    8.818 in

    Compression Ratio

    9.5:1

    Firing Order

    1-2-3-4-5-6

    Oil Pressure

    103 kPa

    15 psi @ 1100 RPM

    Cylinder Bore
    Diameter

    89.016-89.034 mm

    3.5046-3.5053 in

    Out Of Round Maximum

    0.014 mm

    0.0005 in

    Taper -- Thrust Side Maximum

    0.020 mm

    0.0008 in

    Piston
    Diameter-Gaged on the skirt 12 mm below the centerline of the piston pin bore

    88.974-89.001 mm

    3.5029-3.5040 in

    Clearance

    0.032-0.068 mm

    0.0013-0.0027 in

    Pin Bore

    23.006-23.013 mm

    0.9057-0.9060 in

    Piston Ring
    Top Groove Side Clearance

    0.05-0.085 mm

    0.002-0.0033 in

    Second Groove Side Clearance

    0.05-0.09 mm

    0.002-0.0035 in

    Top Ring Gap

    0.15-0.36 mm

    0.006-0.014 in

    Second Ring Gap

    0.5-0.71 mm

    0.0197-0.0280 in

    Groove Clearance

    0.20 mm

    0.008 in in

    Gap with segment at 89.0 mm

    0.25-1.27 mm

    0.0098-0.05 in

    Piston Pin
    Diameter

    22.9915-22.9964 mm

    0.9052-0.9054 in

    Clearance In Piston

    0.0096-0.0215 mm

    0.0004-0.0008 in

    Fit In Rod

    0.0165-0.0464 mm

    0.0006-0.0018 in

    Crankshaft
    Main Journal Diameter

    67.239-67.257 mm

    2.6473-2.6483 in

    Main Journal Taper

    0.005 mm

    0.0002 in

    Out Of Round

    0.005 mm

    0.0002 in

    Flange Runout-Max

    0.04 mm

    0.0016 in

    Cylinder Block Main Bearing Bore Diameter

    72.155-72.168 mm

    2.8407-2.8412 in

    Crankshaft Main Bearing Inside Diameter

    67.289-67.316 mm

    2.6492-2.6502 in

    Main Bearing Clearance

    0.019-0.064 mm

    0.0008-0.0025 in

    Main Thrust Bearing Clearance

    0.032-0.077 mm

    0.0012-0.0030 in

    Crankshaft End Play

    0.060-0.210 mm

    0.0024-0.0083 in

    Crankshaft Flange Runout-Max

    0.04 mm

    0.0016 in

    Crankpin
    Rod Bearing Journal Diameter

    50.768-50.784 mm

    1.9987-1.9994 in

    Rod Bearing Journal Taper

    0.005 mm

    0.0002 in

    Rod Bearing Journal Out Of Round

    0.005 mm

    0.0002 in

    Rod Bearing Bore Diameter

    53.962-53.984 mm

    2.124-2.125 in

    Rod Inside Bearing Diameter

    50.812-50.850 mm

    2.000-2.002 in

    Rod Bearing Journal Clearance

    0.018-0.062 mm

    0.0007-0.0024 in

    Rod Side Clearance

    0.18-0.44 mm

    0.007-0.017 in

    Camshaft
    Lobe Lift (Intake and Exhaust)

    6.9263 mm

    0.2727 in

    Journal Diameter

    47.45-47.48 mm

    1.868-1.869 in

    Camshaft Bearing Bore Diameter-Front and Rear

    51.03-51.08 mm

    2.009-2.011 in

    Camshaft Bearing Bore Diameter-Middle #2 and #3

    50.77-50.82 mm

    1.999-2.001 in

    Camshaft Bearing Inside Diameter

    47.523-47.549 mm

    1.871-1.872 in

    Journal Clearance

    0.026-0.101 mm

    0.001-0.0039 in

    Journal Runout-Max

    0.025 mm

    0.001 in

    Valve System
    Roller Lifter

    Hydraulic

    Rocker Arm Ratio

    1.60:1

    Valve Face Angle

    45

    Seat Angle

    45

    Valve Seat Runout

    0.025 mm

    0.001 in

    Seat Width-Intake

    1.55-1.80 mm

    0.061-0.071 in

    Seat Width-Exhaust

    1.70-2.0 mm

    0.067-0.079 in

    Valve Margin - Minimum Intake

    2.10 mm

    0.083 in

    Valve Margin - Minimum Exhaust

    2.70 mm

    0.106 in

    Valve Stem Clearance

    0.026-0.068 mm

    0.0010-0.0027 in

    Valve Spring
    Valve Springs Free Length

    48.5 mm

    1.89 in

    Valve Springs Load (Closed)

    320 N @ 43.2 mm

    75 lb @ 1.701 in

    Valve Springs Load (Open)

    1036 N @ 32 mm

    230 lb @ 1.260 in

    Installed Height Intake-Exhaust

    43.2 mm

    1.701 in

    Approx. # or coils

    6.55

    Oil Pump
    Gear Lash

    0.094-0.195 mm

    0.0037-0.0077 in

    Gear Pocket Depth

    30.52-30.58 mm

    1.202-1.204 in

    Gear Pocket Diameter

    38.176-38.226 mm

    1.503-1.505 in

    Gear
    Length

    30.45-30.48 mm

    1.199-1.200 in

    Diameter

    38.05-38.10 mm

    1.498-1.500 in

    Side Clearance

    0.038-0.088 mm

    0.001-0.003 in

    End Clearance

    0.040-0.125 mm

    0.002-0.005 in

    Valve to Bore Clearance

    0.038-0.089 mm

    0.0015-0.0035 in

    Fastener Tightening Specifications (LG8 and LA1)

    Application

    Specification

    Metric

    English

    Accelerator Control Cable Bracket Bolt/Nut

    10 Nm

    89 lb in

    Camshaft Position Sensor Bolt

    10 Nm

    89 lb in

    Camshaft Sprocket Bolt

    140 Nm

    103 lb ft

    Camshaft Thrust Plate Screw

    10 Nm

    89 lb in

    Connecting Rod Bearing Cap Nut

    20 Nm + 75

    15 lb ft + 75

    Coolant Drain Plug

    19 Nm

    14 lb ft

    Coolant Temperature Sensor

    23 Nm

    17 lb ft

    Crankshaft Balancer Bolt

    103 Nm

    76 lb ft

    Crankshaft Main Bearing Cap Bolt/Stud

    50 Nm +77

    37 lb ft + 77

    Crankshaft Oil Deflector Nut

    25 Nm

    18 lb ft

    Crankshaft Position Sensor Bolt -- Front Cover

    10 Nm

    89 lb in

    Crankshaft Position Sensor Stud -- Side of Engine Block

    11 Nm

    98 lb in

    Crankshaft Position Sensor Wiring Bracket Bolt

    27 Nm

    20 lb ft

    Cylinder Head Bolt

    60 Nm + 95

    44 lb ft + 95

    Drive Belt Shield Bolt

    10 Nm

    89 lb in

    Drive Belt Tensioner Bolt

    50 Nm

    37 lb ft

    EGR Valve to EGR Valve Pipe Bolt

    25 Nm

    18 lb ft

    EGR Valve Adapter Pipe to Exhaust Manifold Nut

    25 Nm

    18 lb ft

    Engine Flywheel Bolt

    71 Nm

    52 lb ft

    Engine Front Cover Bolt -- Large

    55 Nm

    41 lb ft

    Engine Front Cover Bolt -- Medium

    47 Nm

    35 lb ft

    Engine Front Cover Bolt -- Small

    21 Nm

    15 lb ft

    Engine Mount Bracket Bolt

    58 Nm

    43 lb ft

    Engine Mount Lower Nut

    43 Nm

    32 lb ft

    Engine Mount Strut and Lift Bracket Bolt -- Engine Left Rear

    70 Nm

    52 lb ft

    Engine Mount Strut Bolt/Nut

    48 Nm

    35 lb ft

    Engine Mount Strut Bracket Bolt -- Upper Radiator Support

    28 Nm

    21 lb ft

    Engine Mount Strut Bracket Bolt -- Vehicle Right Side

    50 Nm

    37 lb ft

    Engine Mount Upper Nut

    47 Nm

    35 lb ft

    Engine Oil Pressure Indicator Switch

    13 Nm

    115 lb in

    Engine Wiring Harness Bracket Bolt

    13 Nm

    115 lb in

    Exhaust Crossover Pipe Heat Shield Bolt

    10 Nm

    89 lb in

    Exhaust Crossover Pipe Nut/Stud

    25 Nm

    18 lb ft

    Exhaust Manifold Heat Shield Bolt

    10 Nm

    89 lb in

    Exhaust Manifold Nut

    16 Nm

    12 lb ft

    Exhaust Manifold Stud

    18 Nm

    13 lb ft

    Fuel Feed Pipe to Fuel Injector Rail Nut

    17 Nm

    13 lb ft

    Fuel Injector Rail Bolt

    10 Nm

    89 lb in

    Fuel Pipe Bracket Bolt/Stud

    50 Nm

    37 lb ft

    Fuel Pipe Clip Bolt

    8 Nm

    71 lb in

    Fuel Return Pipe to Fuel Injector Rail Nut

    17 Nm

    13 lb ft

    Generator Bracket and Front Engine Lift Hook Bolt

    50 Nm

    37 lb ft

    Heated Oxygen Sensor

    42 Nm

    31 lb ft

    Heater Inlet Pipe Nut

    25 Nm

    18 lb ft

    Ignition Coil Bracket Bolt/Nut/Stud

    25 Nm

    18 lb ft

    Intake Manifold Coolant Pipe Bolt

    10 Nm

    89 lb in

    Knock Sensor

    19 Nm

    14 lb ft

    Lower Intake Manifold Bolt - Center

    • First Pass

    7 Nm

    62 lb in

    • Final Pass

    13 Nm

    115 lb in

    Lower Intake Manifold Bolt - Corner

    • First Pass

    13 Nm

    115 lb in

    • Final Pass

    25 Nm

    18 lb ft

    MAP Sensor Bolt

    5 Nm

    44 lb in

    Oil Cooler Connector

    50 Nm

    37 lb ft

    Oil Cooler Hose Fitting

    19 Nm

    14 lb ft

    Oil Cooler Pipe Bracket Bolt

    10 Nm

    89 lb in

    Oil Filter

    13 Nm

    115 lb in

    Oil Filter Bypass Hole Plug

    19 Nm

    14 lb ft

    Oil Filter Fitting

    39 Nm

    29 lb ft

    Oil Gallery Plug -- 1/4 inch

    19 Nm

    14 lb ft

    Oil Gallery Plug -- 3/8 inch

    33 Nm

    24 lb ft

    Oil Level Indicator Tube Stud

    25 Nm

    18 lb ft

    Oil Level Sensor Bolt

    10 Nm

    89 lb in

    Oil Pan Bolt

    25 Nm

    18 lb ft

    Oil Pan Drain Plug

    25 Nm

    18 lb ft

    Oil Pan Side Bolt

    50 Nm

    37 lb ft

    Oil Pump Cover Bolt

    10 Nm

    89 lb in

    Oil Pump Drive Clamp Bolt

    36 Nm

    27 lb ft

    Oil Pump Mounting Bolt

    41 Nm

    30 lb ft

    Spark Plug
    • Spark Plug - Initial Installation

    20 Nm

    15 lb ft

    • Spark Plug - Reinstallation

    15 Nm

    11 lb ft

    Thermostat Bypass Pipe to Cylinder Head Nut

    25 Nm

    18 lb ft

    Thermostat Bypass Pipe to Engine Front Cover Bolt

    12 Nm

    106 lb in

    Thermostat Bypass Pipe to Throttle Body Nut

    25 Nm

    18 lb ft

    Throttle Body Bolt/Stud

    25 Nm

    18 lb ft

    Timing Chain Dampener Bolt

    21 Nm

    15 lb ft

    Upper Intake Manifold Bolt/Stud

    25 Nm

    18 lb ft

    Valve Lifter Guide Bolt

    10 Nm

    89 lb in

    Valve Rocker Arm Bolt

    19 Nm + 30

    14 lb  ft+ 30

    Valve Rocker Arm Cover Bolt

    10 Nm

    89 lb in

    Water Outlet Bolt

    25 Nm

    18 lb ft

    Water Pump Bolt

    10 Nm

    89 lb in

    Water Pump Pulley Bolt

    25 Nm

    18 lb ft

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