Infiniti Vehicle Models QX80 2014-present Torque Specifications
Infiniti Vehicle Models QX80 2014-present

Infiniti Vehicle Models QX80 2014-present Torque Specifications

Complete Infiniti Vehicle Models QX80 2014-present torque specifications guide. Includes factory-specified torque values, torque sequences, and technical specifications for all components including body, brakes, drivetrain, electrical, emissions sensors, fuel, exhaust, HVAC, and suspension. Essential information for proper assembly and maintenance.

Updated

Important Information

Safety guidelines and reference information for proper torque application

Quick Reference Guide
ft-lbs → Nm
× 1.356
ft-lbs → kg-m
× 0.138
Nm → ft-lbs
× 0.738
in-lbs → ft-lbs
× 0.083

Common Torque Patterns

Star Pattern

Used for wheels and other circular bolt patterns

Star Pattern torque pattern diagram showing proper bolt tightening sequence
Cross Pattern

Used for gaskets and cover plates

Cross Pattern torque pattern diagram showing proper bolt tightening sequence
Sequential Pattern

Used for head bolts and other critical components

Sequential Pattern torque pattern diagram showing proper bolt tightening sequence

Common Mistakes to Avoid

Over-tightening

Exceeding the specified torque value can stretch or break fasteners, damage threads, or crack components.

Prevention:

Always use a calibrated torque wrench and follow specifications exactly.

Incorrect Torque Sequence

Tightening bolts in the wrong order can cause uneven pressure distribution and potential leaks or damage.

Prevention:

Follow the manufacturer's specified torque sequence pattern.

Dirty Threads

Dirt, rust, or old thread locker can affect torque readings and proper fastener tension.

Prevention:

Clean and inspect all threads before assembly. Use new thread locker if specified.

Reusing TTY Bolts

Torque-to-yield bolts are designed to stretch and must not be reused.

Prevention:

Always replace TTY bolts with new ones. They are single-use only.

Dry vs. Lubricated

Not accounting for whether torque specs are for dry or lubricated fasteners can lead to incorrect tension.

Prevention:

Check if specs are for dry or lubricated threads. Use specified lubricant when required.

Recommended Tools

Torque Wrench (1/4" Drive)

Range: 2-25 ft-lbs
Small fasteners, delicate components

Torque Wrench (3/8" Drive)

Range: 10-100 ft-lbs
Most common automotive fasteners

Torque Wrench (1/2" Drive)

Range: 30-250 ft-lbs
Large fasteners, wheels

Angle Gauge

Torque-to-yield (TTY) bolts

Torque Wrench Care

  • Calibrate annually or after 5,000 clicks
  • Store at lowest setting
  • Keep clean and lubricated

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Search by component name, bolt size, or description

Torque Calculator

Convert between different torque units

5.6l Engine

Torque specifications for 5.6L Engine

Cylinder Head

1

Cylinder Head Bolts

M10 x 1.5
Torque Specification
1. 30 ft-lbs (41 N·m) 2. 90°
Important Notes
Follow the manufacturer's specified torque sequence to avoid warping the cylinder head.
2

Valve Cover Bolts

M6 x 1.0
Torque Specification
7.25 ft-lbs (10 N·m)
Important Notes
Ensure the valve cover gasket is properly seated before tightening.

Crankshaft And Bearings

1

Main Bearing Bolts

M12 x 1.75
Torque Specification
80 ft-lbs (108 N·m)
Important Notes
Follow the specified torque sequence to ensure even clamping force.
2

Connecting Rod Nuts

M10 x 1.25
Torque Specification
45 ft-lbs (61 N·m)
Important Notes
Ensure the connecting rod caps are properly aligned before tightening.

Timing System

1

Timing Chain Tensioner Bolt

M8 x 1.25
Torque Specification
33 ft-lbs (45 N·m)
Important Notes
Ensure the tensioner is properly seated before tightening.
2

Camshaft Sprocket Bolt

M12 x 1.75
Torque Specification
59 ft-lbs (80 N·m)
Important Notes
Ensure the sprocket is properly aligned with the camshaft before tightening.

Cooling System

1

Water Pump Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure the water pump gasket is properly seated before tightening.
2

Thermostat Housing Bolts

M6 x 1.0
Torque Specification
7.2 ft-lbs (9.8 N·m)
Important Notes
Ensure the thermostat housing gasket is properly seated before tightening.

Accessory Drives

1

Serpentine Belt Tensioner Bolt

M10 x 1.5
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure the tensioner is properly aligned before tightening.
2

Alternator Mounting Bolts

M10 x 1.5
Torque Specification
33 ft-lbs (45 N·m)
Important Notes
Ensure the alternator is properly aligned before tightening.

5.6l V8 Engine

Torque specifications for 5.6L-V8 Engine

Cylinder Head

1

Cylinder Head Bolts

M10 x 1.5
Torque Specification
1. 30 ft-lbs (41 N·m) 2. 90°
Important Notes
Follow the manufacturer's specified torque sequence to avoid warping the cylinder head.
2

Valve Cover Bolts

M6 x 1.0
Torque Specification
7.25 ft-lbs (10 N·m)
Important Notes
Ensure the valve cover gasket is properly seated before tightening.

Crankshaft And Bearings

1

Main Bearing Bolts

M12 x 1.75
Torque Specification
80 ft-lbs (108 N·m)
Important Notes
Follow the specified torque sequence to ensure even clamping force.
2

Connecting Rod Nuts

M10 x 1.25
Torque Specification
45 ft-lbs (61 N·m)
Important Notes
Ensure the connecting rod caps are properly aligned before tightening.

Timing System

1

Timing Chain Tensioner Bolt

M8 x 1.25
Torque Specification
33 ft-lbs (45 N·m)
Important Notes
Ensure the tensioner is properly seated before tightening.
2

Camshaft Sprocket Bolt

M12 x 1.75
Torque Specification
59 ft-lbs (80 N·m)
Important Notes
Ensure the sprocket is properly aligned with the camshaft before tightening.

Cooling System

1

Water Pump Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure the water pump gasket is properly seated before tightening.
2

Thermostat Housing Bolts

M6 x 1.0
Torque Specification
7.2 ft-lbs (9.8 N·m)
Important Notes
Ensure the thermostat housing gasket is properly seated before tightening.

Accessory Drives

1

Serpentine Belt Tensioner Bolt

M10 x 1.5
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure the tensioner is properly aligned before tightening.
2

Alternator Mounting Bolts

M10 x 1.5
Torque Specification
33 ft-lbs (45 N·m)
Important Notes
Ensure the alternator is properly aligned before tightening.

7r01 Transmission

Torque specifications for 7r01 Transmission

Transmission Mounting

1

Transmission Mounting Bolts

M14 x 1.5
Torque Specification
51 ft-lbs (69 N·m)
Important Notes
Secure the transmission to the engine or transmission mounts.

Transmission Oil Pan

1

Transmission Oil Pan Bolts

M10 x 1.25
Torque Specification
8.5 ft-lbs (11 N·m)
Important Notes
Secure the oil pan to the transmission case.

Transmission Drain and Fill Plugs

1

Transmission Drain and Fill Plugs

M18 x 1.5
Torque Specification
36 ft-lbs (49 N·m)
Important Notes
Ensure the transmission's fluid level is maintained and prevent contamination of the transmission fluid.

Transmission Pan Gasket

1

Transmission Pan Gasket Bolts

M8 x 1.25
Torque Specification
10 ft-lbs (14 N·m)
Important Notes
Estimated value. Secure the transmission pan gasket to the transmission case.

Transmission Crossmember

1

Transmission Crossmember Bolts

M16 x 1.5
Torque Specification
45 ft-lbs (61 N·m)
Important Notes
Estimated value. Secure the transmission to the chassis or subframe.

Torque Converter

1

Torque Converter Bolts

M14 x 1.5
Torque Specification
35 ft-lbs (47 N·m)
Important Notes
Estimated value. Attach the torque converter to the engine's crankshaft or flexplate.

Body

Torque specifications for Body

Body Hinges

1

Door Hinge Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure proper alignment of doors before final torque application.
2

Hood Hinge Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure hood alignment before final torque application.
3

Trunk Lid/Hatch Hinge Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure proper alignment of the trunk/hatch before final torque application.

Seats

1

Seat Mounting Bolts

M10 x 1.5
Torque Specification
35 ft-lbs (47 N·m)
Important Notes
Ensure seats are properly aligned and secure before final torque application.

Bumpers

1

Bumper Mounting Bolts

M8 x 1.25
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Ensure bumper alignment before final torque application.

Body Panels

1

Fender Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Ensure fender alignment before final torque application.
2

Quarter Panel Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Ensure quarter panel alignment before final torque application.

Roof Components

1

Roof Rack Mounting Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure roof rack alignment before final torque application.
2

Sunroof Mounting Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Ensure sunroof alignment before final torque application.

Brakes

Torque specifications for Brakes

Brake Caliper and Mounting

1

Brake Caliper Bolts

M12 x 1.5
Torque Specification
25 ft-lbs (34 N·m)
2

Brake Caliper Mounting Bracket Bolts

M14 x 1.5
Torque Specification
75 ft-lbs (102 N·m)

Brake Disc/Drum and Rotor

1

Brake Disc/Drum Retaining Bolts

M10 x 1.25
Torque Specification
25 ft-lbs (34 N·m)
2

Brake Rotor Mounting Bolts (if applicable)

M12 x 1.5
Torque Specification
1. 30 ft-lbs (41 N·m) 2. 40 ft-lbs (54 N·m)
Important Notes
Estimated value, may vary depending on specific brake rotor design.

Brake Master Cylinder and ABS Sensor

1

Brake Master Cylinder Mounting Bolts

M10 x 1.25
Torque Specification
1. 20 ft-lbs (27 N·m) 2. 25 ft-lbs (34 N·m)
Important Notes
Estimated value, may vary depending on specific brake master cylinder design.
2

ABS Sensor Mounting Bolts (if applicable)

M8 x 1.25
Torque Specification
1. 10 ft-lbs (14 N·m) 2. 15 ft-lbs (20 N·m)
Important Notes
Estimated value, may vary depending on specific ABS sensor design.

Wheel and Lug Nuts

1

Wheel Lug Nuts

M14 x 1.5
Torque Specification
98 ft-lbs (133 N·m)

Drivetrain

Torque specifications for Drivetrain

Engine To Transmission

1

Engine Block to Transmission Bellhousing Bolts

M14 x 1.5
Torque Specification
90 ft-lbs (122 N·m)
Important Notes
Estimated value, actual torque may vary depending on the manufacturer's recommendations.

Transmission Mounting

1

Transmission Mounting Bolts

M12 x 1.5
Torque Specification
51 ft-lbs (69 N·m)
2

Transmission Crossmember Bolts

M14 x 1.5
Torque Specification
80 ft-lbs (108 N·m)
Important Notes
Estimated value, actual torque may vary depending on the manufacturer's recommendations.

Transmission Oil Pan

1

Transmission Oil Pan Bolts

M8 x 1.25
Torque Specification
97 in-lbs (11 N·m)

Drive Axle Half Shaft

1

Drive Axle/Half Shaft Bolts

M12 x 1.5
Torque Specification
41 ft-lbs (56 N·m)

Cv Joint Axle Nut

1

CV Joint/Axle Nut

M20 x 1.5
Torque Specification
177 ft-lbs (240 N·m)

Propeller Drive Shaft

1

Propeller/Drive Shaft Bolts

M12 x 1.5
Torque Specification
41 ft-lbs (56 N·m)

Differential

1

Differential Cover Bolts

M10 x 1.25
Torque Specification
40 ft-lbs (54 N·m)
Important Notes
Estimated value, actual torque may vary depending on the manufacturer's recommendations.
2

Differential Drain/Fill Plug

M12 x 1.5
Torque Specification
29 ft-lbs (39 N·m)

Transfer Case

1

Transfer Case Mounting Bolts

M14 x 1.5
Torque Specification
60 ft-lbs (81 N·m)
Important Notes
Estimated value, actual torque may vary depending on the manufacturer's recommendations.
2

Transfer Case Drain/Fill Plug

M12 x 1.5
Torque Specification
29 ft-lbs (39 N·m)

Drive Shaft Center Bearing

1

Drive Shaft Center Bearing Bolts

M12 x 1.5
Torque Specification
40 ft-lbs (54 N·m)
Important Notes
Estimated value, actual torque may vary depending on the manufacturer's recommendations.

Flywheel

1

Flywheel Bolts

M14 x 1.5
Torque Specification
94 ft-lbs (127 N·m)

Electrical

Torque specifications for Electrical

Ignition System

1

Ignition Coil Bolt

M6 x 1.0
Torque Specification
7 ft-lbs (9 N-m)
Important Notes
Ensure the ignition coil is properly seated before tightening. Estimated bolt size based on typical applications.

Battery System

1

Battery Terminal Nuts

M6 x 1.0
Torque Specification
4.42 ft-lbs (6 N-m)
Important Notes
Ensure the battery terminals are clean and free of corrosion before tightening. Estimated bolt size based on typical applications.
2

Grounding Bolt/Nut

M8 x 1.25
Torque Specification
10 ft-lbs (13.6 N-m)
Important Notes
Ensure the grounding point is clean and free of paint or debris. Estimated bolt size based on typical applications.

Charging System

1

Alternator Mounting Bolts

M10 x 1.5
Torque Specification
33 ft-lbs (45 N-m)
Important Notes
Ensure the alternator is properly aligned with the mounting bracket. Estimated bolt size based on typical applications.

Starting System

1

Starter Motor Mounting Bolts

M10 x 1.5
Torque Specification
33 ft-lbs (45 N-m)
Important Notes
Ensure the starter motor is properly aligned with the mounting bracket. Estimated bolt size based on typical applications.

Control System

1

Electrical Control Unit (ECU) Mounting Bolts

M6 x 1.0
Torque Specification
15 ft-lbs (20 N-m)
Important Notes
Ensure the ECU is properly seated and aligned. Estimated bolt size based on typical applications.
2

Fuse Box Mounting Bolts

M6 x 1.0
Torque Specification
12 ft-lbs (16 N-m)
Important Notes
Ensure the fuse box is properly aligned and seated. Estimated bolt size based on typical applications.
3

Wiring Harness Connector Bolts

M5 x 0.8
Torque Specification
8 ft-lbs (11 N-m)
Important Notes
Ensure the wiring harness connectors are properly seated. Estimated bolt size based on typical applications.

Emissions Sensors

Torque specifications for Emissions_sensors

Oxygen Sensors

1

Oxygen Sensor Bolts

M12 x 1.5
Torque Specification
25 ft-lbs (34 N·m)
Important Notes
Estimated value based on similar components and bolt sizes.
2

Heated Oxygen Sensor (HO2S) Bolts

M10 x 1.25
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Estimated value based on similar components and bolt sizes.

NOx Sensors

1

NOx Sensor Bolts

M10 x 1.25
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Estimated value based on similar components and bolt sizes.

EGR System

1

EGR Valve Bolts

M12 x 1.5
Torque Specification
16 ft-lbs (22 N·m)
2

EGR Cooler Bolts

M14 x 1.75
Torque Specification
30 ft-lbs (41 N·m)
Important Notes
Estimated value based on similar components and bolt sizes.
3

EGR Valve Mounting Bolts

M14 x 1.75
Torque Specification
30 ft-lbs (41 N·m)
Important Notes
Estimated value based on similar components and bolt sizes.

Exhaust

Torque specifications for Exhaust

Exhaust Manifold Headers

1

Exhaust Manifold/Headers to Cylinder Head Bolts

M10 x 1.25
Torque Specification
30 ft-lbs (41 N·m)
Important Notes
Ensure bolts are tightened in a crisscross pattern to evenly distribute pressure.
2

Exhaust Pipe to Exhaust Manifold/Headers Bolts

M10 x 1.25
Torque Specification
30 ft-lbs (41 N·m)
Important Notes
Ensure a secure connection to prevent leaks and heat damage.

Catalytic Converter

1

Catalytic Converter to Exhaust Pipe Bolts

M10 x 1.25
Torque Specification
30 ft-lbs (41 N·m)
Important Notes
Ensure a secure connection to prevent leaks and maintain emissions control.

Muffler

1

Muffler to Exhaust Pipe Bolts

M10 x 1.25
Torque Specification
30 ft-lbs (41 N·m)
Important Notes
Ensure a secure connection to prevent leaks and reduce noise.

Heat Shield

1

Exhaust Heat Shield Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Ensure bolts are not over-tightened to avoid damaging the heat shield or exhaust components.

Exhaust Hanger

1

Exhaust Hanger Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure a secure connection to prevent excessive movement of the exhaust system.

Oxygen Sensor

1

Oxygen Sensor (O2 Sensor)

M18 x 1.5
Torque Specification
33 ft-lbs (45 N·m)
Important Notes
Ensure a secure connection to prevent leaks and maintain accurate sensor readings.

Exhaust Flange

1

Exhaust Flange Bolts

M10 x 1.25
Torque Specification
30 ft-lbs (41 N·m)
Important Notes
Ensure a secure connection to prevent leaks and maintain proper emissions control.

Fuel

Torque specifications for Fuel

Fuel Delivery System

1

Fuel Rail Bolts

M8 x 1.25
Torque Specification
21 ft-lbs (28 N·m)
Important Notes
Ensure bolts are tightened in a crisscross pattern to evenly distribute pressure.
2

Fuel Injector Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (9 N·m)
Important Notes
Over-tightening can damage the injector seals.
3

Fuel Injector Rail Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Ensure the rail is properly seated before tightening.
4

Fuel Line Fittings

M8 x 1.25
Torque Specification
21 ft-lbs (28 N·m)
Important Notes
Ensure fittings are clean and free of debris before installation.

Fuel Storage System

1

Fuel Tank Strap Bolts

M10 x 1.5
Torque Specification
25 ft-lbs (34 N·m)
Important Notes
Ensure the tank is properly aligned before tightening.
2

Fuel Filler Neck Bolts

M6 x 1.0
Torque Specification
9 ft-lbs (12 N·m)
Important Notes
Ensure the filler neck is properly aligned with the tank.
3

Fuel Tank Drain Plug

M12 x 1.5
Torque Specification
12 ft-lbs (16 N·m)
Important Notes
Ensure the drain plug seal is in good condition before installation.

Fuel Auxiliary System

1

Fuel Pump Mounting Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Ensure the pump is properly seated before tightening.
2

Fuel Filter Bolt/Nut

M8 x 1.25
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Ensure the filter housing is properly aligned before tightening.
3

Fuel Pressure Sensor Bolt

M6 x 1.0
Torque Specification
7 ft-lbs (9 N·m)
Important Notes
Ensure the sensor is properly seated before tightening.
4

Fuel System Vent Bolt

M6 x 1.0
Torque Specification
7 ft-lbs (9 N·m)
Important Notes
Ensure the vent is properly aligned before tightening.

Hvac

Torque specifications for Hvac

Ac Compressor

1

A/C Compressor Mounting Bolts

M10 x 1.25
Torque Specification
30 ft-lbs (41 N·m)
Important Notes
Ensure bolts are tightened in a crisscross pattern to evenly distribute load.

Ac Lines

1

A/C Line Fittings

M8 x 1.0
Torque Specification
21 ft-lbs (28 N·m)
Important Notes
Use a torque wrench to avoid overtightening, which can damage fittings.

Evaporator Core

1

Evaporator Core Housing Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (9 N·m)
Important Notes
Estimated value based on similar M6 bolts in HVAC systems.

Blower Motor

1

Blower Motor Mounting Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (9 N·m)
Important Notes
Estimated value based on similar M6 bolts in HVAC systems.

Heater Core

1

Heater Core Inlet/Outlet Fittings

M10 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Estimated value based on similar M10 fittings in HVAC systems.

Hvac Case

1

HVAC Case Assembly Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (9 N·m)
Important Notes
Estimated value based on similar M6 bolts in HVAC systems.

Suspension

Torque specifications for Suspension

Upper Suspension

1

Strut/Shock Absorber Mounting Bolts

M14 x 1.5
Torque Specification
47 ft-lbs (64 N·m)
Important Notes
Secures the strut/shock absorber to the vehicle's frame.
2

Upper Control Arm Bolts

M16 x 1.5
Torque Specification
75 ft-lbs (102 N·m)
Important Notes
Estimated value. Secures the upper control arm to the vehicle's frame.

Lower Suspension

1

Control Arm Bolts

M18 x 1.5
Torque Specification
85 ft-lbs (115 N·m)
Important Notes
Secures the control arm to the vehicle's frame.
2

Lower Control Arm Bolts

M18 x 1.5
Torque Specification
85 ft-lbs (115 N·m)
Important Notes
Estimated value. Secures the lower control arm to the vehicle's frame.

Steering and Sway Bar

1

Ball Joint Nut

M20 x 1.5
Torque Specification
60 ft-lbs (81 N·m)
Important Notes
Secures the ball joint to the control arm.
2

Tie Rod End Nut

M16 x 1.5
Torque Specification
41 ft-lbs (56 N·m)
Important Notes
Secures the tie rod end to the steering gear.
3

Sway Bar Link Nut

M14 x 1.5
Torque Specification
29 ft-lbs (39 N·m)
Important Notes
Secures the sway bar link to the sway bar.
4

Steering Gear/Rack Bolts

M18 x 1.5
Torque Specification
74 ft-lbs (100 N·m)
Important Notes
Secures the steering gear/rack to the vehicle's frame.

Stabilizer Bar and Coil Spring

1

Stabilizer Bar Mounting Bolts

M14 x 1.5
Torque Specification
45 ft-lbs (61 N·m)
Important Notes
Estimated value. Secures the stabilizer bar to the vehicle's frame.
2

Coil Spring Mounting Bolts

M16 x 1.5
Torque Specification
55 ft-lbs (75 N·m)
Important Notes
Estimated value. Secures the coil spring to the vehicle's frame.

Troubleshooting Guide

Common issues, diagnostic steps, and prevention guidelines

Common Issues

Bolt stretching, stripped threads, uneven torque patterns

Loose Components

Symptoms:
  • Rattling or vibration noises
  • Visible movement in components
  • Uneven panel gaps
Solutions:
  • Clean threads and mounting surfaces
  • Replace damaged fasteners
  • Apply proper torque in sequence
  • Use thread locker if specified

Stripped Fasteners

Symptoms:
  • Unable to achieve proper torque
  • Fastener spins freely
  • Visible thread damage
Solutions:
  • Use thread repair kit if appropriate
  • Install thread insert (HeliCoil)
  • Replace component if threaded hole is damaged
  • Upgrade to higher grade fastener if recommended

Overtightened Components

Symptoms:
  • Cracked or deformed parts
  • Broken fasteners
  • Compressed gaskets or seals
Solutions:
  • Replace damaged components
  • Use new fasteners
  • Follow proper torque sequence
  • Verify correct torque specifications

Diagnostic Steps

Visual inspection, torque verification, thread assessment

1

Visual Inspection

Inspect the affected area for any visible signs of damage or wear

  • Check for cracks or deformation
  • Look for signs of excessive wear
  • Verify proper fastener installation
2

Torque Verification

Verify the torque applied to the fasteners

  • Check the torque wrench calibration
  • Verify the torque specification
  • Compare the applied torque to the specification
3

Thread Assessment

Assess the condition of the threads

  • Check for signs of thread damage
  • Verify the thread type and size
  • Check for proper thread engagement

Prevention Guidelines

Best practices, maintenance tips, tool care

Best Practices

  • Always follow the recommended torque specification
  • Use the correct type and size of fasteners
  • Verify the torque wrench calibration regularly

Maintenance Tips

  • Regularly inspect the affected area for signs of wear or damage
  • Replace damaged or worn-out components promptly
  • Keep the work area clean and organized

Tool Care

  • Regularly clean and maintain the torque wrench
  • Store the torque wrench in a dry and secure location
  • Verify the torque wrench calibration before each use

Frequently Asked Questions

Find answers to common questions about torque specifications

Q1

What IS the recommended torque value for the lug nuts on a 2023 Infiniti QX80?

110 ft-lbs (150 Nm)

Q2

Can I use an impact wrench to tighten the lug nuts on my QX80?

Yes, but it IS important to use the proper torque setting and to follow the manufacturer's instructions to avoid over-tightening.

Q3

What IS the torque value for the oil drain plug on a 2018 Infiniti QX80?

29 ft-lbs (40 Nm)

Q4

IS it necessary to use a torque wrench when tightening bolts and nuts on my QX80?

Yes, a torque wrench IS essential for ensuring that bolts and nuts are tightened to the proper specifications, which helps prevent damage to components and ensures proper function.

Q5

Can I find a comprehensive list of torque specifications for my specific year and model of QX80?

Yes, refer to the vehicle's service manual or consult with an authorized Infiniti dealer.

Q6

What are the torque specifications for the suspension components on a 2016 Infiniti QX80?

Refer to the service manual for specific torque values for individual components such as control arms, ball joints, and tie rods.

Environmental Considerations

Temperature, humidity, and seasonal effects on torque specifications

Temperature Effects

Includes: High Heat, Cold Weather, Thermal Cycling

Temperature can significantly impact torque values and fastener behavior

Cold Weather

Effects:
  • Increased material brittleness
  • Higher torque required due to thread contraction
  • Reduced thread lubricant effectiveness
Recommendations:
  • Allow components to warm to room temperature when possible
  • Consider using winter-grade thread lubricants
  • Check torque values more frequently during winter months

Hot Weather

Effects:
  • Thermal expansion of components
  • Decreased friction in threads
  • Accelerated lubricant breakdown
Recommendations:
  • Check torque when components are at normal operating temperature
  • Use temperature-resistant thread lockers
  • Consider re-torquing after heat cycles

Humidity and Corrosion

Covers: Rust Prevention, Salt Exposure, Moisture Control

Moisture and corrosion can affect fastener integrity and torque values

High Humidity

Effects:
  • Accelerated corrosion formation
  • Reduced friction coefficient
  • Potential thread seizing
Prevention:
  • Use corrosion-resistant fasteners
  • Apply appropriate anti-seize compounds
  • Maintain proper protective coatings

Salt Exposure

Effects:
  • Rapid corrosion development
  • Thread damage
  • Seized fasteners
Prevention:
  • Regular underbody washing
  • Use of sacrificial anodes where appropriate
  • Application of protective coatings

Seasonal Maintenance

Spring, Summer, Fall, and Winter maintenance schedules

Spring

  • Inspect for winter damage
  • Clean and protect exposed fasteners
  • Check torque on critical components

Summer

  • Monitor heat-affected components
  • Check expansion-related loosening
  • Inspect cooling system mounts

Fall

  • Prepare for winter conditions
  • Apply corrosion protection
  • Verify all fasteners are properly torqued

Winter

  • More frequent inspection of critical fasteners
  • Check for salt damage
  • Monitor suspension component torque

Related Resources

Tools, service procedures, and technical bulletins

Recommended Tools

Digital Torque Wrench (10-100 Nm)

Essential for tightening fasteners to precise torque specifications, preventing damage and ensuring proper assembly. This range IS suitable for many applications on the qx80.

  • Digital display for accurate readings
  • Audible alarm when target torque IS reached
  • Multiple units (Nm, ft-lb, in-lb)
  • Reversible ratcheting mechanism
Learn more
Service Procedures

Engine Bolt Tightening Procedure

Step-by-step instructions for tightening engine bolts to specified torque values in the qx80.

  • Clean all bolt threads and seating surfaces.
  • Apply a small amount of thread locker to each bolt.
  • Tighten the bolts in a star pattern to the specified torque value for your engine size.
  • Recheck the torque on all bolts after 500 miles.
View full procedure

Suspension Component Bolt Tightening Procedure

Guidance on tightening suspension bolts to ensure proper alignment, handling, and safety in the qx80.

  • Raise the vehicle and support it securely.
  • Locate the suspension bolts that need to be tightened.
  • Clean the bolt threads and seating surfaces.
  • Apply a small amount of anti-seize compound to the bolts.
  • Tighten the bolts to the specified torque value for your suspension component.
View full procedure

Brake Caliper Bolt Tightening Procedure

Instructions for properly tightening brake caliper bolts to ensure optimal braking performance in the qx80.

  • Remove the wheel and locate the brake caliper bolts.
  • Clean the bolt threads and seating surfaces.
  • Apply a small amount of thread locker to the bolts.
  • Tighten the bolts to the specified torque value for your brake caliper.
View full procedure
Technical Service Bulletins

NTB20-072: Revised Engine Mounting Bolt Torque Specifications

2020-06-15

Updates the torque specifications for certain engine mounting bolts to improve durability and reduce noise.

2014-2020 qx80

Resolution: Replace the affected bolts and tighten to the revised torque specifications.

NTB21-034: Suspension Arm Bolt Tightening Procedure

2021-04-20

Corrects the tightening procedure for certain suspension arm bolts to enhance handling and stability.

2021-Present qx80

Resolution: Follow the updated tightening procedure as outlined in the bulletin.

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Technical Information
  • All specifications, including torque values, fluid capacities, and maintenance procedures, should be verified against your vehicle's factory service manual.
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About the Author

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Alan Montanye - Automotive Technical Specialist
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Alan Montanye

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