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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 N·m

    89 lb in
    Camshaft Position Sensor Bolt

    10 N·m

    89 lb in
    Camshaft Sprocket Bolt

    140 N·m

    103 lb ft
    Camshaft Thrust Plate Screw

    10 N·m

    89 lb in
    Connecting Rod Bearing Cap Nut

    20 N·m + 75°

    15 lb ft + 75°
    Coolant Drain Plug

    19 N·m

    14 lb ft
    Coolant Temperature Sensor

    23 N·m

    17 lb ft
    Crankshaft Balancer Bolt

    103 N·m

    76 lb ft
    Crankshaft Main Bearing Cap Bolt/Stud

    50 N·m +77°

    37 lb ft + 77°
    Crankshaft Oil Deflector Nut

    25 N·m

    18 lb ft
    Crankshaft Position Sensor Bolt -- Front Cover

    10 N·m

    89 lb in
    Crankshaft Position Sensor Stud -- Side of Engine Block

    11 N·m

    98 lb in
    Crankshaft Position Sensor Wiring Bracket Bolt

    27 N·m

    20 lb ft
    Cylinder Head Bolt

    60 N·m + 95°

    44 lb ft + 95°
    Drive Belt Shield Bolt

    10 N·m

    89 lb in
    Drive Belt Tensioner Bolt

    50 N·m

    37 lb ft
    EGR Valve to EGR Valve Pipe Bolt

    25 N·m

    18 lb ft
    EGR Valve Adapter Pipe to Exhaust Manifold Nut

    25 N·m

    18 lb ft
    Engine Flywheel Bolt

    71 N·m

    52 lb ft
    Engine Front Cover Bolt -- Large

    55 N·m

    41 lb ft
    Engine Front Cover Bolt -- Medium

    47 N·m

    35 lb ft
    Engine Front Cover Bolt -- Small

    21 N·m

    15 lb ft
    Engine Mount Bracket Bolt

    58 N·m

    43 lb ft
    Engine Mount Lower Nut

    43 N·m

    32 lb ft
    Engine Mount Strut and Lift Bracket Bolt -- Engine Left Rear

    70 N·m

    52 lb ft
    Engine Mount Strut Bolt/Nut

    48 N·m

    35 lb ft
    Engine Mount Strut Bracket Bolt -- Upper Radiator Support

    28 N·m

    21 lb ft
    Engine Mount Strut Bracket Bolt -- Vehicle Right Side

    50 N·m

    37 lb ft
    Engine Mount Upper Nut

    47 N·m

    35 lb ft
    Engine Oil Pressure Indicator Switch

    13 N·m

    115 lb in
    Engine Wiring Harness Bracket Bolt

    13 N·m

    115 lb in
    Exhaust Crossover Pipe Heat Shield Bolt

    10 N·m

    89 lb in
    Exhaust Crossover Pipe Nut/Stud

    25 N·m

    18 lb ft
    Exhaust Manifold Heat Shield Bolt

    10 N·m

    89 lb in
    Exhaust Manifold Nut

    16 N·m

    12 lb ft
    Exhaust Manifold Stud

    18 N·m

    13 lb ft
    Fuel Feed Pipe to Fuel Injector Rail Nut

    17 N·m

    13 lb ft
    Fuel Injector Rail Bolt

    10 N·m

    89 lb in
    Fuel Pipe Bracket Bolt/Stud

    50 N·m

    37 lb ft
    Fuel Pipe Clip Bolt

    8 N·m

    71 lb in
    Fuel Return Pipe to Fuel Injector Rail Nut

    17 N·m

    13 lb ft
    Generator Bracket and Front Engine Lift Hook Bolt

    50 N·m

    37 lb ft
    Heated Oxygen Sensor

    42 N·m

    31 lb ft
    Heater Inlet Pipe Nut

    25 N·m

    18 lb ft
    Ignition Coil Bracket Bolt/Nut/Stud

    25 N·m

    18 lb ft
    Intake Manifold Coolant Pipe Bolt

    10 N·m

    89 lb in
    Knock Sensor

    19 N·m

    14 lb ft

    Lower Intake Manifold Bolt - Center

    • First Pass

    7 N·m

    62 lb in

    • Final Pass

    13 N·m

    115 lb in

    Lower Intake Manifold Bolt - Corner

    • First Pass

    13 N·m

    115 lb in

    • Final Pass

    25 N·m

    18 lb ft
    MAP Sensor Bolt

    5 N·m

    44 lb in
    Oil Cooler Connector

    50 N·m

    37 lb ft
    Oil Cooler Hose Fitting

    19 N·m

    14 lb ft
    Oil Cooler Pipe Bracket Bolt

    10 N·m

    89 lb in
    Oil Filter

    13 N·m

    115 lb in
    Oil Filter Bypass Hole Plug

    19 N·m

    14 lb ft
    Oil Filter Fitting

    39 N·m

    29 lb ft
    Oil Gallery Plug -- 1/4 inch

    19 N·m

    14 lb ft
    Oil Gallery Plug -- 3/8 inch

    33 N·m

    24 lb ft
    Oil Level Indicator Tube Stud

    25 N·m

    18 lb ft
    Oil Level Sensor Bolt

    10 N·m

    89 lb in
    Oil Pan Bolt

    25 N·m

    18 lb ft
    Oil Pan Drain Plug

    25 N·m

    18 lb ft
    Oil Pan Side Bolt

    50 N·m

    37 lb ft
    Oil Pump Cover Bolt

    10 N·m

    89 lb in
    Oil Pump Drive Clamp Bolt

    36 N·m

    27 lb ft
    Oil Pump Mounting Bolt

    41 N·m

    30 lb ft
    Spark Plug

    • Spark Plug - Initial Installation

    20 N·m

    15 lb ft

    • Spark Plug - Reinstallation

    15 N·m

    11 lb ft
    Thermostat Bypass Pipe to Cylinder Head Nut

    25 N·m

    18 lb ft
    Thermostat Bypass Pipe to Engine Front Cover Bolt

    12 N·m

    106 lb in
    Thermostat Bypass Pipe to Throttle Body Nut

    25 N·m

    18 lb ft
    Throttle Body Bolt/Stud

    25 N·m

    18 lb ft
    Timing Chain Dampener Bolt

    21 N·m

    15 lb ft
    Upper Intake Manifold Bolt/Stud

    25 N·m

    18 lb ft
    Valve Lifter Guide Bolt

    10 N·m

    89 lb in
    Valve Rocker Arm Bolt

    19 N·m + 30°

    14 lb  ft+ 30°
    Valve Rocker Arm Cover Bolt

    10 N·m

    89 lb in
    Water Outlet Bolt

    25 N·m

    18 lb ft
    Water Pump Bolt

    10 N·m

    89 lb in
    Water Pump Pulley Bolt

    25 N·m

    18 lb ft
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