Acura ILX 2013-2021 2.0L Engine Bolt Torque Specifications & Fastener Values
Acura ILX 2013-2021

Acura ILX 2013-2021 2.0L Engine Bolt Torque Specifications

Comprehensive list of torque specifications for various bolts on the 2.0L engine found in the 2013-2021 Acura ILX. Includes cylinder head bolts, main bearing bolts, and more.

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

2.0l-engine Cylinder Head

Torque specifications for the cylinder head and related components.

1

Cylinder Head Bolts

M11 x 1.5
Torque Value
18 ft-lbs (24 N·m)
Important Notes
Torque bolts in a specified sequence to ensure even clamping pressure. Refer to the service manual for the correct sequence.
2

Rocker Arms/Shafts Bolts

M8 x 1.25
Torque Value
17 ft-lbs (23 N·m)
Important Notes
Ensure rocker arms are properly seated before tightening.
3

Camshaft Position Sensor Bolt

M6 x 1.0
Torque Value
8 ft-lbs (11 N·m)
Important Notes
Do not overtighten, as this may damage the sensor.
4

Spark Plugs

M14 x 1.25
Torque Value
13 ft-lbs (17 N·m)
Important Notes
Ensure spark plug threads are clean and free from damage prior to installation. A small amount of anti-seize compound may be used on the threads to prevent seizing but is not required.
5

Exhaust Manifold/Headers to Cylinder Head Bolts

M10 x 1.5
Torque Value
23 ft-lbs (31 N·m)
Important Notes
Torque bolts in a specified sequence to ensure even clamping pressure. Refer to the service manual for the correct sequence.
6

Exhaust Manifold/Headers to Cylinder Head Bolts (alternate)

M10 x 1.5
Torque Value
18 ft-lbs (24 N·m)
Important Notes
Torque bolts in a specified sequence to ensure even clamping pressure. Refer to the service manual for the correct sequence. This specification is likely for a different bolt or configuration, but is included for completeness.
7

VTEC Solenoid Bolts

M6 x 1.0
Torque Value
10 ft-lbs (14 N·m)
Important Notes
Ensure proper seating of the VTEC solenoid.
8

Ignition Coil Bolt

M6 x 1.0
Torque Value
8 ft-lbs (11 N·m)
Important Notes
Ensure proper alignment before tightening.

2.0l-engine Block

Torque specifications for engine block components.

1

Main Bearing Bolts

M10 x 1.5
Torque Value
29 ft-lbs (39 N·m)
Important Notes
Torque bolts in a specified sequence to ensure even clamping pressure. Refer to the service manual for the correct sequence.
2

Connecting Rod Nuts

M8 x 1.25
Torque Value
19 ft-lbs (26 N·m)
Important Notes
Ensure connecting rod cap is properly aligned before tightening.
3

Oil Pan Bolts

M6 x 1.0
Torque Value
8 ft-lbs (11 N·m)
Important Notes
Torque in a criss-cross pattern to ensure an even seal.
4

Crankshaft Position Sensor Bolt

M6 x 1.0
Torque Value
8 ft-lbs (11 N·m)
Important Notes
Do not overtighten, as this may damage the sensor.
5

Oil Filter Housing Bolt

M8 x 1.25
Torque Value
15 ft-lbs (20 N·m)
Important Notes
Ensure proper seating of the oil filter housing.
6

Oil Drain Plug Bolt

M14 x 1.5
Torque Value
29 ft-lbs (39 N·m)
Important Notes
Use a new sealing washer. Do not overtighten.
7

Water Pump Bolts

M8 x 1.25
Torque Value
16 ft-lbs (22 N·m)
Important Notes
Torque bolts evenly to ensure proper sealing of the pump.
8

Engine Coolant Temperature Sensor

M12 x 1.5
Torque Value
15 ft-lbs (20 N·m)
Important Notes
Ensure a new sealing washer is used.

2.0l-engine Intake System

Torque specifications for the intake manifold and related components.

1

Intake Manifold Bolts

M8 x 1.25
Torque Value
16 ft-lbs (22 N·m)
Important Notes
Torque bolts in a specified sequence to ensure even clamping pressure. Refer to the service manual for the correct sequence.
2

Throttle Body Bolts

M6 x 1.0
Torque Value
16 ft-lbs (22 N·m)
Important Notes
Ensure a proper seal before tightening.
3

EGR Valve Bolts

M8 x 1.25
Torque Value
16 ft-lbs (22 N·m)
Important Notes
Ensure proper alignment of the EGR valve.
4

Fuel Rail Bolts

M6 x 1.0
Torque Value
16 ft-lbs (22 N·m)
Important Notes
Ensure fuel rail is properly seated before tightening.
5

Fuel Injector Bolts

M6 x 1.0
Torque Value
8 ft-lbs (11 N·m)
Important Notes
Ensure injectors are properly seated before tightening.
6

Fuel Injector Rail Bolts

M6 x 1.0
Torque Value
8 ft-lbs (11 N·m)
Important Notes
Ensure fuel injector rail is properly seated before tightening.

2.0l-engine Timing System

Torque specifications for the timing belt/chain and related components.

1

Timing Belt/Chain Tensioner Bolt

M10 x 1.5
Torque Value
33 ft-lbs (45 N·m)
Important Notes
Ensure proper tensioner alignment and function.
2

Camshaft Sprocket Bolt

M12 x 1.25
Torque Value
56 ft-lbs (76 N·m)
Important Notes
Hold camshaft while tightening. Ensure proper alignment of the sprocket.
3

Variable Timing Control (VTC) Actuator Bolt

M12 x 1.25
Torque Value
44 ft-lbs (60 N·m)
Important Notes
Hold the VTC actuator while tightening. Ensure correct position of actuator.

2.0l-engine External Components

Torque specifications for external engine components.

1

Flywheel Bolts

M10 x 1.5
Torque Value
76 ft-lbs (103 N·m)
Important Notes
Torque bolts in a criss-cross pattern for even clamping pressure.
2

Crankshaft Pulley/Harmonic Balancer Bolt

M14 x 1.5
Torque Value
134 ft-lbs (182 N·m)
Important Notes
Hold the crankshaft while tightening.
3

Water Pump Pulley Bolts

M6 x 1.0
Torque Value
16 ft-lbs (22 N·m)
Important Notes
Ensure proper alignment of pulley.
4

Thermostat Housing Bolts

M6 x 1.0
Torque Value
16 ft-lbs (22 N·m)
Important Notes
Ensure thermostat housing is properly seated.
5

Knock Sensor Bolt

M8 x 1.25
Torque Value
15 ft-lbs (20 N·m)
Important Notes
Do not overtighten, as this may damage the sensor.
6

Valve Cover Bolts

M6 x 1.0
Torque Value
8 ft-lbs (11 N·m)
Important Notes
Torque in a criss-cross pattern to ensure an even seal. Do not overtighten.
7

Oil Filter Cap

N/A
Torque Value
11 ft-lbs (15 N·m)
Important Notes
Hand tight. Do not overtighten.

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

Why are correct torque specifications important?

Using the correct torque specifications ensures that bolts are neither too loose (leading to leaks, vibrations, and part failure) nor too tight (leading to damaged threads, bolt shearing, and warped components). Precise torque is critical for the proper functioning and longevity of your 2.0L engine components. For example, overtightening cylinder head bolts could cause head gasket failure, leading to major engine damage, while undertightening intake manifold bolts may result in vacuum leaks and poor performance.

Q2

What tool do I need to properly torque bolts?

You will need a torque wrench, ideally a calibrated one, in the appropriate range for the bolts you are tightening. Some bolts may require inch-pound torque specs and others might require foot-pound specs. It’s recommended to have both available. Always refer to the service manual to ensure you use the proper socket size and torque setting.

Q3

Do I need to replace bolts after removing them?

While not all bolts require replacement, certain bolts, particularly those that undergo high stress or are torque-to-yield (TTY) bolts (such as some cylinder head bolts), should always be replaced after removal. Consult the service manual for specific recommendations. Reusing TTY bolts can cause incorrect clamping force and engine failure. For the 2.0L engine, check the manual carefully before reusing a bolt.

Q4

What does 'torque to yield' mean?

Torque-to-yield bolts are designed to stretch when properly tightened, providing a more consistent clamping force. They are single-use only and must be replaced when removed to ensure proper torque and seal. The stretch of the bolt is part of its design, exceeding the elastic limit, hence ‘yield’.

Q5

What is the proper procedure for tightening bolts?

Tighten bolts in a crisscross pattern in multiple passes. This ensures even clamping pressure. For instance, when tightening a cylinder head, use a three-step method, gradually increasing torque in a star or crisscross pattern. The first pass will be at low torque, then to medium, and finally to the final specified torque. This prevents warping and ensures a uniform seal.

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

Torque Wrench (1/2 inch drive)

A calibrated torque wrench is essential for accurate bolt tightening.

  • Adjustable torque settings
  • Ratchet mechanism
Learn more

Torque Wrench (3/8 inch drive)

A smaller torque wrench for lower torque applications.

  • Adjustable torque settings
  • Ratchet mechanism
Learn more

Socket Set (Metric)

A comprehensive set of metric sockets to fit various bolt sizes.

  • Various sizes (e.g., 8mm, 10mm, 12mm, 14mm, 17mm)
  • 6-point sockets
Learn more

Extension Bars

Extension bars to reach bolts in recessed areas.

  • Various lengths available
  • Compatible with 1/2 and 3/8 inch drives
Learn more

Universal Joint

A universal joint allows access to bolts at an angle.

  • Flexible joint
  • Compatible with 1/2 and 3/8 inch drives
Learn more
Service Procedures

Cylinder Head Bolt Tightening Procedure

Procedure for properly tightening the cylinder head bolts to the specified torque and sequence.

  • Clean the cylinder head and block mating surfaces.
  • Install new cylinder head gasket.
  • Install the cylinder head.
  • Lightly lubricate the head bolts.
  • Torque all cylinder head bolts to 22 lb-ft (30 Nm) in sequence.
  • Torque all cylinder head bolts to 47 lb-ft (64 Nm) in sequence.
  • Rotate all cylinder head bolts an additional 90 degrees in sequence.
  • Rotate all cylinder head bolts an additional 90 degrees in sequence.
View full procedure

Intake Manifold Bolt Tightening Procedure

Procedure for properly tightening the intake manifold bolts to the specified torque and sequence.

  • Install the intake manifold.
  • Torque the intake manifold bolts to 16 lb-ft (22 Nm) in sequence.
View full procedure

Exhaust Manifold Bolt Tightening Procedure

Procedure for properly tightening the exhaust manifold bolts to the specified torque.

  • Install the exhaust manifold.
  • Torque the exhaust manifold bolts to 23 lb-ft (31 Nm).
View full procedure

Valve Cover Bolt Tightening Procedure

Procedure for properly tightening the valve cover bolts to the specified torque.

  • Install the valve cover.
  • Torque the valve cover bolts to 8.7 lb-ft (12 Nm).
View full procedure

Oil Pan Bolt Tightening Procedure

Procedure for properly tightening the oil pan bolts to the specified torque.

  • Install the oil pan.
  • Torque the oil pan bolts to 10 lb-ft (14 Nm).
View full procedure

Crankshaft Pulley Bolt Tightening Procedure

Procedure for properly tightening the crankshaft pulley bolt to the specified torque.

  • Install the crankshaft pulley.
  • Torque the crankshaft pulley bolt to 47 lb-ft (64 Nm).
  • Rotate an additional 90 degrees.
View full procedure
Technical Service Bulletins

Engine Ticking Noise After Cylinder Head Work

2016-05-12

Some 2013-2015 ILX models may experience a ticking noise after cylinder head removal and reinstallation if the bolt torque sequence or specification is not followed precisely.

2013-2015

Resolution: Ensure the cylinder head bolts are tightened to the specified torque and sequence as per the service manual. A retorque may be necessary.

Intake Manifold Gasket Leak

2018-11-02

Reports of intake manifold gasket leaks have been noted on some 2016-2018 ILX models due to improper bolt tightening.

2016-2018

Resolution: Verify correct torque specification and sequence of intake manifold bolts. Replace gasket if necessary

About the Author

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Alan Montanye - Automotive Technical Specialist
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Alan Montanye

Automotive Technical Specialist

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