Acura Integra 1994-2001 Drivetrain Bolt Torque Specifications & Fastener Values
Acura Integra 1994-2001

Acura Integra 1994-2001 Drivetrain Bolt Torque Specifications

Comprehensive guide to drivetrain bolt torque specifications for the 1994-2001 Acura Integra, including transmission, axles, and differential components. Ensure proper installation and prevent component failure with these crucial torque settings.

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

Engine block and crankshaft

Components that secure the engine block and crankshaft, ensuring proper engine operation and performance.

1

Flywheel Bolts

M12 x 1.5
Torque Value
79 ft-lbs (108 N·m)
Important Notes
Proper torque ensures the flywheel is properly seated and aligned.
2

Main Bearing Bolts

M14 x 1.5
Torque Value
56 ft-lbs (76 N·m)
Important Notes
Proper torque ensures the bearings are properly seated and aligned.
3

Connecting Rod Nuts

M10 x 1.25
Torque Value
22 ft-lbs (29 N·m)
Important Notes
Proper torque ensures the rods are properly seated and aligned.
4

Crankshaft Pulley/Harmonic Balancer Bolt

M16 x 1.5
Torque Value
134 ft-lbs (182 N·m)
Important Notes
Proper torque ensures the pulley/balancer is properly seated and aligned.

Transmission and mounting

Components that secure the transmission and mounting, ensuring proper transmission operation and performance.

1

Transmission Mounting Bolts

M12 x 1.5
Torque Value
40 ft-lbs (54 N·m)
Important Notes
Proper torque ensures the transmission is properly aligned and secured.
2

Engine Block to Transmission Bellhousing Bolts

M10 x 1.25
Torque Value
30 ft-lbs (41 N·m)
Important Notes
Proper torque ensures the engine and transmission are properly aligned and secured.
3

Transmission Crossmember Bolts

M12 x 1.5
Torque Value
40 ft-lbs (54 N·m)
Important Notes
Proper torque ensures the transmission is properly aligned and secured.

Drivetrain and axles

Components that secure the drivetrain and axles, ensuring proper drivetrain operation and performance.

1

Drive Axle/Half Shaft Bolts

M14 x 1.5
Torque Value
58 ft-lbs (78 N·m)
Important Notes
Proper torque ensures the axles are properly seated and aligned.
2

CV Joint/Axle Nut

M16 x 1.5
Torque Value
181 ft-lbs (245 N·m)
Important Notes
Proper torque ensures the joint is properly seated and aligned.
3

Propeller/Drive Shaft Bolts

M12 x 1.5
Torque Value
47 ft-lbs (64 N·m)
Important Notes
Proper torque ensures the drive shaft is properly seated and aligned.
4

Axle Shaft to Hub Bolts

M14 x 1.5
Torque Value
80 ft-lbs (108 N·m)
Important Notes
Proper torque ensures the axle shaft is properly seated and aligned.
5

Differential Cover Bolts

M10 x 1.25
Torque Value
30 ft-lbs (41 N·m)
Important Notes
Proper torque ensures the cover is properly seated and aligned.

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 is using the correct torque specification so important?

Using the correct torque specification is critical to ensure proper clamping force and prevent component failure. Over-tightening can damage threads, stretch bolts beyond their yield point, and cause premature failure. Under-tightening can lead to loosening, vibrations, and ultimately, component separation or damage. For example, an under-torqued flywheel bolt can shear under load, leading to catastrophic engine damage.

Q2

What type of torque wrench should I use?

A click-type torque wrench is recommended for most drivetrain applications. It provides an audible and tactile 'click' when the set torque is reached, reducing the risk of over-tightening. A digital torque wrench can offer even greater precision. Avoid using beam-type wrenches for critical applications as they are less accurate, especially in tight spaces. Regardless of type, regularly calibrate your torque wrench to maintain accuracy.

Q3

Should I use new bolts when working on the drivetrain?

It is highly recommended to use new bolts, especially for critical components like flywheel, pressure plate, and driveshaft bolts. Bolts are designed to stretch slightly when torqued, and repeated use can weaken them, increasing the risk of failure. For example, reusing pressure plate bolts that have been previously torqued is a very bad idea that can easily lead to failure. New bolts also help ensure that the designed clamping force is achieved.

Q4

What is the difference between 'dry' and 'lubricated' torque specifications?

A dry torque specification means that the bolt threads should be clean and free of any lubricant. A lubricated specification, on the other hand, typically requires a light coating of engine oil or thread lubricant on the bolt threads. Applying lubricant to a bolt intended to be torqued dry will drastically reduce the clamping force by increasing tension. It's critical to adhere to manufacturer's recommendations for each bolt. For instance, if a driveshaft bolt specifies a dry torque of 40 ft-lbs and you use oil on the threads, you may significantly over-tighten the bolt.

Q5

What should I do if I suspect a bolt has been over-torqued or damaged?

If you suspect a bolt has been over-torqued, immediately replace it with a new one. An over-torqued bolt may have stretched or damaged the threads, compromising its integrity. Additionally, closely inspect the receiving threads for any signs of damage. Damaged threads might require replacement of the component itself. If a bolt feels difficult to turn, or you experience significant resistance before reaching the specified torque, remove it and check both bolt and threads.

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 capable of measuring torque values within the range of drivetrain components.

  • Click-type or digital readout for accurate measurement
  • Wide torque range (e.g., 10-150 ft-lbs or equivalent)
  • Durable construction
Learn more

Torque Wrench (3/8 inch drive)

A calibrated torque wrench for lower torque specifications found on smaller drivetrain components.

  • Click-type or digital readout
  • Lower torque range (e.g., 5-75 ft-lbs or equivalent)
  • Compact size for access to tight spaces
Learn more

Socket Set (Metric)

A comprehensive set of metric sockets including common sizes for drivetrain bolts and fasteners.

  • Various sizes (e.g., 10mm, 12mm, 14mm, 17mm, 19mm, 22mm)
  • 6-point and 12-point sockets for different bolt heads
  • Durable chrome vanadium construction
Learn more

Extension Bars

Various length extension bars to reach recessed or hard-to-access bolts.

  • Different lengths for varied access needs
  • Durable construction
Learn more

Universal Joint

A universal joint to allow for torque application at an angle.

  • 1/2 inch or 3/8 inch drive size to match torque wrench
  • Durable construction
Learn more
Service Procedures

Drive Shaft Bolt Torque Procedure

Procedure for torquing the drive shaft bolts to the correct specifications on a 1994-2001 Acura Integra.

  • Locate all drive shaft bolts connecting to the transmission and wheel hub.
  • Clean the bolt threads to remove dirt and debris.
  • Using the appropriate socket and torque wrench, tighten the bolts to the specified torque value (typically between 33-48 ft-lbs, depending on specific location).
  • Apply a small amount of blue threadlocker to bolts that require it.
  • Torque bolts in a criss-cross pattern to ensure even tightening.
  • Double-check all torqued bolts to confirm they are within specification.
  • Re-check torque after 50-100 miles of driving.
View full procedure

Transmission Mount Bolt Torque Procedure

Procedure for torquing the transmission mount bolts to the correct specifications on a 1994-2001 Acura Integra.

  • Locate all bolts securing the transmission mount to the chassis and transmission.
  • Clean the bolt threads.
  • Use the appropriate socket and torque wrench to tighten the bolts to the specified torque value (typically around 47 ft-lbs for the main bracket bolts and 28 ft-lbs for the mount bolts).
  • Apply blue threadlocker to bolts.
  • Torque bolts in a criss-cross pattern.
  • Double check all torqued bolts.
  • Re-check torque after 50-100 miles of driving.
View full procedure

Flywheel Bolt Torque Procedure

Procedure for torquing flywheel bolts to the correct torque specification on a 1994-2001 Acura Integra during manual transmission clutch replacement.

  • Clean the flywheel and pressure plate surfaces thoroughly.
  • Install the flywheel and secure it with all new bolts.
  • Tighten all flywheel bolts to 15 ft-lbs.
  • Use the proper torque pattern and tighten all bolts to 35 ft-lbs.
  • Finally, torque all bolts to 65 ft-lbs following the same sequence.
  • Install the pressure plate on the flywheel with new bolts and secure them using the manufacturer's torque spec (typically 14-20 ft-lbs).
View full procedure

Differential Cover Bolt Torque Procedure

Procedure for torquing the differential cover bolts to the correct specifications on a 1994-2001 Acura Integra.

  • Locate all the bolts securing the differential cover.
  • Clean both differential and cover surfaces and apply new gasket material.
  • Install the differential cover ensuring proper alignment with the bolt holes.
  • Tighten all cover bolts by hand.
  • Use the proper torque pattern and torque all bolts to 16 ft-lbs.
  • Double-check all bolts to ensure correct torquing.
View full procedure
Technical Service Bulletins

Increased Drive Shaft Bolt Loosening

1997-04-15

Some 1994-1997 Acura Integra models have experienced drive shaft bolt loosening issues after normal operation.

1994-1997

Resolution: Clean bolt threads thoroughly, apply new blue threadlocker, and torque to the upper end of the specified range (e.g., 48 ft-lbs). Re-torque after 50 miles.

Transmission Mount Bolt Failure

1999-08-20

Reports of transmission mount bolts failing or loosening on some 1998-2001 Integra models have been received.

1998-2001

Resolution: Inspect all transmission mount bolts for damage or wear, replace with OEM bolts and torque to 47 ft-lbs for the bracket bolts and 28 ft-lbs for the mount bolts. Use a high quality threadlocker.

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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