Subaru Vehicle Models Subaru BRZ 2022-present Torque Specifications
Subaru Vehicle Models Subaru BRZ 2022-present

Subaru Vehicle Models Subaru BRZ 2022-present Torque Specifications

Complete Subaru Vehicle Models Subaru BRZ 2022-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

Search Specifications

Search by component name, bolt size, or description

Torque Calculator

Convert between different torque units

2.4l H4 Engine

Torque specifications for 2.4L-H4 Engine

Cylinder Head and Engine Block

1

Cylinder Head Bolts

M12 x 1.5
Torque Specification
15 ft-lbs (20 N·m)
2

Engine Block to Transmission Mounting Bolts

M14 x 1.5
Torque Specification
45 ft-lbs (61 N·m)
Important Notes
Estimated value based on general industry standards.
3

Engine Block to Engine Mounting Bolts

M12 x 1.5
Torque Specification
35 ft-lbs (47 N·m)
Important Notes
Estimated value based on general industry standards.

Main Bearings and Crankshaft

1

Main Bearing Bolts

M16 x 1.5
Torque Specification
41 ft-lbs (56 N·m)
2

Crankshaft Pulley/Harmonic Balancer Bolt

M18 x 1.5
Torque Specification
132 ft-lbs (179 N·m)

Valvetrain and Timing System

1

Valve Cover Bolts

M8 x 1.25
Torque Specification
6 ft-lbs (8 N·m)
2

Timing Belt/Chain Tensioner Bolt

M12 x 1.5
Torque Specification
25 ft-lbs (34 N·m)
3

Camshaft Sprocket Bolt

M14 x 1.5
Torque Specification
39 ft-lbs (53 N·m)

Fuel System and Intake Manifold

1

Throttle Body Bolts

M8 x 1.25
Torque Specification
8 ft-lbs (11 N·m)
2

Intake Manifold Bolts

M10 x 1.5
Torque Specification
18 ft-lbs (24 N·m)
3

Fuel Rail Bolts

M10 x 1.5
Torque Specification
15 ft-lbs (20 N·m)

Exhaust System and EGR Valve

1

Exhaust Manifold/Headers Bolts

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

EGR Valve Bolts

M10 x 1.5
Torque Specification
15 ft-lbs (20 N·m)

Cooling System and Water Pump

1

Water Pump Bolts

M12 x 1.5
Torque Specification
20 ft-lbs (27 N·m)
2

Water Pump Pulley Bolts

M8 x 1.25
Torque Specification
8 ft-lbs (11 N·m)

Ignition System and Spark Plugs

1

Spark Plugs

M14 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
2

Ignition Coil Bolt

M8 x 1.25
Torque Specification
5 ft-lbs (7 N·m)

Oil System and Oil Filter

1

Oil Pan Bolts

M12 x 1.5
Torque Specification
46 ft-lbs (62 N·m)
2

Oil Filter Cap Torque

N/A
Torque Specification
N/A
Important Notes
Hand tight (snug) only.

A960e Transmission

Torque specifications for A960e Transmission

Transmission Mounting

1

Transmission Mounting Bolts

M12 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Torque value range: 37-44 ft-lbs (50-60 N·m)

Transmission Oil Pan

1

Transmission Oil Pan Bolts

M10 x 1.25
Torque Specification
43 ft-lbs (58 N·m)
Important Notes
Torque value range: 43-50 ft-lbs (58-68 N·m)

Transmission Fluid System

1

Transmission Drain and Fill Plugs

M14 x 1.5
Torque Specification
29 ft-lbs (39 N·m)
Important Notes
Torque value range: 29-43 ft-lbs (39-58 N·m)
2

Transmission Fluid Drain/Fill Plug

M14 x 1.5
Torque Specification
29 ft-lbs (39 N·m)
Important Notes
Torque value range: 29-43 ft-lbs (39-58 N·m)

A960E Transmission Case

1

A960E Transmission Case Bolts (Upper and Lower)

M14 x 1.5
Torque Specification
44 ft-lbs (60 N·m)
Important Notes
Torque value range: 44-51 ft-lbs (60-69 N·m). Estimated value based on industry standards.

A960E Transmission Bellhousing

1

A960E Transmission Bellhousing Bolts

M12 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Torque value range: 37-44 ft-lbs (50-60 N·m). Estimated value based on industry standards.

A960E Transmission Valve Body

1

A960E Transmission Valve Body Bolts

M10 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Torque value range: 18-22 ft-lbs (24-30 N·m). Estimated value based on industry standards.

A960E Transmission Solenoid Pack

1

A960E Transmission Solenoid Pack Bolts

M8 x 1.25
Torque Specification
10 ft-lbs (14 N·m)
Important Notes
Torque value range: 10-14 ft-lbs (14-19 N·m). Estimated value based on industry standards.

A960E Transmission Filter

1

A960E Transmission Filter Bolts

M8 x 1.25
Torque Specification
10 ft-lbs (14 N·m)
Important Notes
Torque value range: 10-14 ft-lbs (14-19 N·m). Estimated value based on industry standards.

Body

Torque specifications for Body

Suspension

1

Strut/Shock Absorber Mounting Bolts

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

Control Arm Bolts

M14 x 1.5
Torque Specification
47 ft-lbs (64 N·m)
Important Notes
Attach the control arms to the vehicle's body.

Steering

1

Steering Gear/Rack Bolts

M16 x 1.5
Torque Specification
65 ft-lbs (88 N·m)
Important Notes
Secure the steering gear/rack to the vehicle's body.

Brake System

1

Brake Caliper Bolts

M12 x 1.5
Torque Specification
59 ft-lbs (80 N·m)
Important Notes
Attach the brake calipers to the vehicle's body.
2

Brake Caliper Mounting Bracket Bolts

M12 x 1.5
Torque Specification
58 ft-lbs (78 N·m)
Important Notes
Secure the brake caliper mounting brackets to the vehicle's body.

Wheels and Tires

1

Wheel Lug Nuts

M14 x 1.5
Torque Specification
80 ft-lbs (109 N·m)
Important Notes
Attach the wheels to the vehicle's body.

Body Panels

1

Body Panel Bolts

M10 x 1.5
Torque Specification
10 ft-lbs (14 N·m)
Important Notes
Estimated value. Secure the body panels to the vehicle's body.
2

Bumper Mounting Bolts

M12 x 1.5
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Estimated value. Attach the bumpers to the vehicle's body.
3

Fender Liner Bolts

M10 x 1.5
Torque Specification
10 ft-lbs (14 N·m)
Important Notes
Estimated value. Secure the fender liners to the vehicle's body.
4

Door Hinge Bolts

M12 x 1.5
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Estimated value. Attach the door hinges to the vehicle's body.
5

Trunk Lid Hinge Bolts

M12 x 1.5
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Estimated value. Attach the trunk lid hinges to the vehicle's body.

Brakes

Torque specifications for Brakes

Brake Caliper Assembly

1

Brake Caliper Bolts

M12 x 1.5
Torque Specification
62 ft-lbs (84 N·m)
Important Notes
Torque value is an average of the specified range.
2

Brake Caliper Mounting Bracket Bolts

M14 x 1.5
Torque Specification
65 ft-lbs (88 N·m)
Important Notes
Torque value is an average of the specified range.

Brake Rotor/Disc Assembly

1

Brake Disc/Drum Retaining Bolts

M10 x 1.25
Torque Specification
62 ft-lbs (84 N·m)
Important Notes
Torque value is an average of the specified range.

Wheel Assembly

1

Wheel Lug Nuts

M14 x 1.5
Torque Specification
87 ft-lbs (118 N·m)
Important Notes
Torque value is an average of the specified range.

Brake Master Cylinder and Booster Assembly

1

Brake Master Cylinder Mounting Bolts

M8 x 1.25
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Estimated torque value based on general industry standards.
2

Brake Booster Mounting Bolts

M8 x 1.25
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Estimated torque value based on general industry standards.

ABS Module Assembly

1

ABS Module Mounting Bolts

M6 x 1.0
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Estimated torque value based on general industry standards.

Brake Line Fittings

1

Brake Line Fittings

M10 x 1.25
Torque Specification
17 ft-lbs (23 N·m)
Important Notes
Estimated torque value based on general industry standards.

Drivetrain

Torque specifications for Drivetrain

Engine

1

Flywheel Bolts

M10 x 1.25
Torque Specification
51.5 ft-lbs (70 N·m)
Important Notes
Torque value is the midpoint of the provided range. Ensure proper alignment of the flywheel before tightening.
2

Main Bearing Bolts

M8 x 1.25
Torque Specification
41.5 ft-lbs (56.5 N·m)
Important Notes
Torque value is the midpoint of the provided range. Ensure bearings are properly seated before tightening.
3

Connecting Rod Nuts

M8 x 1.25
Torque Specification
29.5 ft-lbs (40 N·m)
Important Notes
Torque value is the midpoint of the provided range. Ensure proper alignment of the connecting rods before tightening.
4

Crankshaft Pulley/Harmonic Balancer Bolt

M14 x 1.5
Torque Specification
132 ft-lbs (179 N·m)
Important Notes
Torque value is the midpoint of the provided range. Ensure the pulley/balancer is properly aligned before tightening.

Transmission

1

Transmission Mounting Bolts

M10 x 1.5
Torque Specification
40.5 ft-lbs (55 N·m)
Important Notes
Torque value is the midpoint of the provided range. Ensure proper alignment of the transmission before tightening.
2

Transmission Oil Pan Bolts

M8 x 1.25
Torque Specification
46.5 ft-lbs (63 N·m)
Important Notes
Torque value is the midpoint of the provided range. Ensure the oil pan gasket is properly seated before tightening.
3

Transmission Crossmember Bolts

M10 x 1.5
Torque Specification
45 ft-lbs (61 N·m)
Important Notes
Torque value is estimated based on similar components. Ensure proper alignment of the crossmember before tightening.

Drivetrain

1

Drive Axle/Half Shaft Bolts

M12 x 1.5
Torque Specification
50.5 ft-lbs (68.5 N·m)
Important Notes
Torque value is the midpoint of the provided range. Ensure proper alignment of the axles before tightening.
2

CV Joint/Axle Nut

M24 x 1.5
Torque Specification
139 ft-lbs (189 N·m)
Important Notes
Torque value is the midpoint of the provided range. Ensure the CV joint is properly seated before tightening.
3

Propeller/Drive Shaft Bolts

M10 x 1.25
Torque Specification
47.5 ft-lbs (64.5 N·m)
Important Notes
Torque value is the midpoint of the provided range. Ensure proper alignment of the drive shaft before tightening.
4

Differential Drain/Fill Plug

M12 x 1.75
Torque Specification
46.5 ft-lbs (63 N·m)
Important Notes
Torque value is the midpoint of the provided range. Ensure the plug is properly seated before tightening.
5

Differential Cover Bolts

M8 x 1.25
Torque Specification
35 ft-lbs (47.5 N·m)
Important Notes
Torque value is estimated based on similar components. Ensure the differential cover gasket is properly seated before tightening.
6

Axle Shaft to Hub Bolts

M12 x 1.5
Torque Specification
75 ft-lbs (102 N·m)
Important Notes
Torque value is estimated based on similar components. Ensure proper alignment of the axle shaft before tightening.

Electrical

Torque specifications for Electrical

Electrical System

1

Starter Motor Mounting Bolts

M10 x 1.5
Torque Specification
29 ft-lbs (39 N·m)
Important Notes
Proper torque ensures reliable starter motor operation.
2

Alternator Mounting Bolts

M12 x 1.75
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Proper torque prevents damage to the alternator and ensures reliable operation.
3

Battery Terminal Nuts

M6 x 1
Torque Specification
35 in-lbs (4 N·m)
Important Notes
Proper torque ensures a reliable electrical connection and prevents damage to the terminals.
4

Ignition Coil Bracket Bolts

M8 x 1.25
Torque Specification
10 ft-lbs (14 N·m)
Important Notes
Estimated value. Proper torque ensures reliable ignition coil operation.
5

Fuel Pump Electrical Connector Bolts

M5 x 0.8
Torque Specification
5 ft-lbs (7 N·m)
Important Notes
Estimated value. Proper torque ensures a reliable electrical connection and prevents damage to the fuel pump.
6

A/C Compressor Electrical Connector Bolts

M5 x 0.8
Torque Specification
5 ft-lbs (7 N·m)
Important Notes
Estimated value. Proper torque ensures a reliable electrical connection and prevents damage to the A/C compressor.

Emissions Sensors

Torque specifications for Emissions_sensors

EGR System

1

EGR Valve Bolts

M10 x 1.5
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Proper torque ensures a secure connection and prevents leaks.

Exhaust Manifold And Headers

1

Exhaust Manifold/Headers Bolts

M12 x 1.75
Torque Specification
25 ft-lbs (34 N·m)
Important Notes
Proper torque ensures a secure connection and prevents leaks.

Catalytic Converter

1

Catalytic Converter to Exhaust Pipe Bolts

M12 x 1.75
Torque Specification
25 ft-lbs (34 N·m)
Important Notes
Proper torque ensures a secure connection and prevents leaks.

Oxygen Sensors

1

Oxygen Sensor Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Estimated torque value. Consult manufacturer's documentation or a repair manual for specific torque values.
2

Heated Oxygen Sensor (HO2S) Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Estimated torque value. Consult manufacturer's documentation or a repair manual for specific torque values.
3

NOx Sensor Bolts (if equipped)

M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Estimated torque value. Consult manufacturer's documentation or a repair manual for specific torque values.

Exhaust

Torque specifications for Exhaust

Exhaust Manifold Headers

1

Exhaust Manifold/Headers to Engine Bolts

M10 x 1.25
Torque Specification
25.5 ft-lbs (34.5 N·m)
Important Notes
Torque value is the midpoint of the provided range (23-28 ft-lbs).
2

Exhaust Manifold/Headers to Cylinder Head Bolts

M8 x 1.25
Torque Specification
15 ft-lbs (20.3 N·m)
Important Notes
Torque value is the midpoint of the provided range (14-16 ft-lbs).

Exhaust Pipe Connections

1

Exhaust Pipe to Exhaust Manifold/Headers Bolts

M10 x 1.25
Torque Specification
25.5 ft-lbs (34.5 N·m)
Important Notes
Torque value is the midpoint of the provided range (23-28 ft-lbs).
2

Catalytic Converter to Exhaust Pipe Bolts

M10 x 1.25
Torque Specification
25.5 ft-lbs (34.5 N·m)
Important Notes
Torque value is the midpoint of the provided range (23-28 ft-lbs).
3

Muffler to Exhaust Pipe Bolts

M10 x 1.25
Torque Specification
25.5 ft-lbs (34.5 N·m)
Important Notes
Torque value is the midpoint of the provided range (23-28 ft-lbs).

Oxygen Sensor

1

Oxygen Sensor Bolts

M8 x 1.25
Torque Specification
17.5 ft-lbs (23.7 N·m)
Important Notes
Torque value is the midpoint of the provided range (15-20 ft-lbs). Estimated based on general industry standards.

Exhaust Mounting

1

Exhaust System Mounting Bolts

M10 x 1.25
Torque Specification
25 ft-lbs (33.9 N·m)
Important Notes
Torque value is the midpoint of the provided range (20-30 ft-lbs). Estimated based on general industry standards.

Heat Shields

1

Heat Shield Bolts

M6 x 1.0
Torque Specification
12.5 ft-lbs (16.9 N·m)
Important Notes
Torque value is the midpoint of the provided range (10-15 ft-lbs). Estimated based on general industry standards.

Exhaust Clamps

1

Exhaust System Clamp Bolts

M6 x 1.0
Torque Specification
12.5 ft-lbs (16.9 N·m)
Important Notes
Torque value is the midpoint of the provided range (10-15 ft-lbs). Estimated based on general industry standards.

Fuel

Torque specifications for Fuel

Fuel Rail and Injector System

1

Fuel Rail Bolts

M10 x 1.5
Torque Specification
15 ft-lbs (20 N·m)
2

Fuel Injector Bolts

M8 x 1.25
Torque Specification
7 ft-lbs (9 N·m)
3

Fuel Injector Rail Bolts

M10 x 1.5
Torque Specification
15 ft-lbs (20 N·m)

Fuel Pump and Filter System

1

Fuel Pump Mounting Bolts

M12 x 1.75
Torque Specification
20 ft-lbs (27 N·m)
2

Fuel Filter Bolt/Nut

M14 x 2.0
Torque Specification
18 ft-lbs (24 N·m)

Fuel Tank and Vent System

1

Fuel Tank Strap Bolts

M12 x 1.75
Torque Specification
20 ft-lbs (27 N·m)
2

Fuel Filler Neck Bolts

M10 x 1.5
Torque Specification
9 ft-lbs (12 N·m)
3

Fuel Tank Vent Valve Bolts

M8 x 1.25
Torque Specification
12 ft-lbs (16 N·m)
Important Notes
Estimated value based on similar components.

Fuel Pressure Regulator and Line Fittings

1

Fuel Pressure Regulator Mounting Bolts

M10 x 1.5
Torque Specification
12 ft-lbs (16 N·m)
Important Notes
Estimated value based on similar components.
2

Fuel Line Fittings

M8 x 1.25
Torque Specification
12 ft-lbs (16 N·m)
Important Notes
Estimated value based on similar components.

Hvac

Torque specifications for Hvac

A/C Compressor

1

A/C Compressor Mounting Bolts

M10 x 1.5
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Torque value is within the recommended range of 18-22 ft-lbs (24-30 Nm).

A/C Lines and Fittings

1

A/C Line Fittings

M8 x 1.25
Torque Specification
18.5 ft-lbs (25 N·m)
Important Notes
Torque value is within the recommended range of 17-20 ft-lbs (23-27 Nm).

A/C Condenser

1

A/C Condenser Mounting Bolts

M12 x 1.75
Torque Specification
17.5 ft-lbs (23.7 N·m)
Important Notes
Estimated torque value based on general industry standards. Actual value may vary depending on the specific application and component design.

A/C Evaporator

1

A/C Evaporator Mounting Bolts

M10 x 1.5
Torque Specification
12.5 ft-lbs (16.9 N·m)
Important Notes
Estimated torque value based on general industry standards. Actual value may vary depending on the specific application and component design.

Refrigerant Lines and Brackets

1

A/C Refrigerant Line Bracket Bolts

M8 x 1.25
Torque Specification
12.5 ft-lbs (16.9 N·m)
Important Notes
Estimated torque value based on general industry standards. Actual value may vary depending on the specific application and component design.

Heater Core and Blower Motor

1

Heater Core Mounting Bolts

M10 x 1.5
Torque Specification
12.5 ft-lbs (16.9 N·m)
Important Notes
Estimated torque value based on general industry standards. Actual value may vary depending on the specific application and component design.
2

Blower Motor Mounting Bolts

M10 x 1.5
Torque Specification
12.5 ft-lbs (16.9 N·m)
Important Notes
Estimated torque value based on general industry standards. Actual value may vary depending on the specific application and component design.

Suspension

Torque specifications for Suspension

Front Suspension

1

Strut/Shock Absorber Mounting Bolts

M14 x 1.5
Torque Specification
50.5 ft-lbs (68.5 N·m)
Important Notes
Torque value is an average of the specified range.
2

Control Arm Bolts

M14 x 1.5
Torque Specification
50.5 ft-lbs (68.5 N·m)
Important Notes
Torque value is an average of the specified range.
3

Ball Joint Nut

M16 x 1.5
Torque Specification
70 ft-lbs (95 N·m)
4

Upper Control Arm Bushing Bolts

M12 x 1.25
Torque Specification
35 ft-lbs (47.5 N·m)
Important Notes
Estimated torque value based on general industry standards.
5

Lower Control Arm Bushing Bolts

M12 x 1.25
Torque Specification
35 ft-lbs (47.5 N·m)
Important Notes
Estimated torque value based on general industry standards.

Steering System

1

Tie Rod End Nut

M14 x 1.5
Torque Specification
39.5 ft-lbs (53.5 N·m)
Important Notes
Torque value is an average of the specified range.

Stabilizer Bar

1

Sway Bar Link Nut

M12 x 1.25
Torque Specification
28 ft-lbs (38 N·m)
Important Notes
Torque value is an average of the specified range.
2

Stabilizer Bar Mounting Bolts

M14 x 1.5
Torque Specification
35 ft-lbs (47.5 N·m)
Important Notes
Estimated torque value based on general industry standards.

Coil Spring

1

Coil Spring Mounting Bolts

M14 x 1.5
Torque Specification
45 ft-lbs (61 N·m)
Important Notes
Estimated torque value based on general industry standards.

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 are the recommended torque specifications for the cylinder head bolts on a 2022-Present Subaru BRZ?

The torque specifications for the cylinder head bolts on a 2022-Present Subaru BRZ IS 77 ft-lbs (104 Nm) for the first pass and 83 ft-lbs (112 Nm) for the final pass.

Q2

What type of torque wrench should I use to ensure accurate torque application on critical components like the cylinder head?

For critical components like the cylinder head, it IS highly recommended to use a high-quality, calibrated torque wrench with a range that covers the required torque specifications. This ensures precise and accurate torque application.

Q3

IS it acceptable to use an impact wrench to tighten bolts on the Subaru BRZ?

The use of impact wrenches IS generally not recommended for tightening bolts on the Subaru BRZ. Impact wrenches can apply excessive force and lead to over-tightening, potentially causing damage to the components or bolts. It IS recommended to use a torque wrench with a click-type mechanism to achieve the specified torque values.

Q4

Can I use SAE (inch-pound) torque values instead of the specified metric (Newton-meter) values provided in the manual?

No. The torque specifications provided in the Subaru BRZ manual are in metric units (Newton-meters). Using SAE values can lead to incorrect torque application and potential damage to components. It IS crucial to adhere to the specified metric torque values and use appropriate metric tools for accurate results.

Q5

What IS the importance of following the torque specifications precisely?

Precisely following the torque specifications IS crucial for several reasons. Correct torque ensures proper fit and function of the components, prevents premature wear or failure, and maintains the integrity and safety of the vehicle. Over-tightening can lead to stripped threads, damaged components, and potential safety hazards. Under-tightening, on the other hand, can result in loose connections, leaks, or even catastrophic failures.

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 BRZ.

  • 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

Bolt Tightening Sequence for Engine Components

Correct sequence for tightening cylinder head bolts and other engine components to manufacturer specifications.

  • Apply a thin coat of engine assembly lube to the bolt threads.
  • Tighten all cylinder head bolts to 55 Nm (40 ft-lb) in three passes, following the specified sequence.
  • Tighten the rest of the engine bolts and nuts according to the torque specifications.
View full procedure

Wheel Lug Nut Tightening Procedure

Proper tightening procedure for ensuring secure and safe wheel mounting.

  • Clean the wheel mating surfaces and lug nuts.
  • Apply a small amount of anti-seize compound to the lug nut threads.
  • Tighten the lug nuts to 110 Nm (81 ft-lb) using a torque wrench, following a star pattern.
  • Recheck torque after driving 50-100 km (30-60 miles).
View full procedure
Technical Service Bulletins

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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.
  • Vehicle specifications and procedures may vary by model year, trim level, and region.
  • Always follow the manufacturer's recommended procedures and safety precautions.
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About the Author

Expert automotive knowledge and experience

Alan Montanye - Automotive Technical Specialist
ASE

Alan Montanye

Automotive Technical Specialist

ASE Master Certified Technician with over a decade of hands-on experience in automotive repair and diagnostics.

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