Acura Integra 1985-1989 Suspension Bolt Torque Specifications
Detailed torque specifications for all suspension bolts on the 1985-1989 Acura Integra, including front and rear suspension components. This guide ensures proper installation and safe operation of your vehicle's suspension system.
Important Information
Safety guidelines and reference information for proper torque application
Safety First
- Always verify torque specifications with your vehicle's factory service manual
- Use properly calibrated torque wrenches
- Replace all torque-to-yield (TTY) bolts - they are single-use only
- When in doubt, consult a professional mechanic
Quick Reference Guide
Quick Reference Guide
Common Torque Patterns
Star Pattern
Used for wheels and other circular bolt patterns
Cross Pattern
Used for gaskets and cover plates
Sequential Pattern
Used for head bolts and other critical components
Common Mistakes to Avoid
Common Mistakes to Avoid
Over-tightening
Exceeding the specified torque value can stretch or break fasteners, damage threads, or crack components.
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.
Follow the manufacturer's specified torque sequence pattern.
Dirty Threads
Dirt, rust, or old thread locker can affect torque readings and proper fastener tension.
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.
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.
Check if specs are for dry or lubricated threads. Use specified lubricant when required.
Recommended Tools
Recommended Tools
Torque Wrench (1/4" Drive)
Torque Wrench (3/8" Drive)
Torque Wrench (1/2" Drive)
Angle Gauge
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
Strut Shock Absorber
This subsystem includes components that connect the strut or shock absorber to the vehicle's chassis and suspension. Proper torque ensures stability, alignment, and smooth operation of the suspension.
1 Strut/Shock Absorber Mounting Bolts
M10 x 1.25
Strut/Shock Absorber Mounting Bolts
M10 x 1.25Torque Value
Important Notes
2 Lower Strut Mount Bolts
M12 x 1.5
Lower Strut Mount Bolts
M12 x 1.5Torque Value
Important Notes
3 Upper Strut Mount Bolts
M8 x 1.25
Upper Strut Mount Bolts
M8 x 1.25Torque Value
Important Notes
Control Arm Ball Joint
This subsystem includes components that connect the suspension to the chassis and allow for movement. Proper torque ensures secure attachment and proper wheel alignment.
1 Control Arm Bolts
M10 x 1.25
Control Arm Bolts
M10 x 1.25Torque Value
Important Notes
2 Ball Joint Nut
M10 x 1.25
Ball Joint Nut
M10 x 1.25Torque Value
Important Notes
Steering System
This subsystem includes components that connect the steering rack to the steering knuckle and ensure precise steering control. Proper torque ensures stability and accurate steering response.
1 Tie Rod End Nut
M12 x 1.25
Tie Rod End Nut
M12 x 1.25Torque Value
Important Notes
2 Steering Gear/Rack Bolts
M14 x 1.5
Steering Gear/Rack Bolts
M14 x 1.5Torque Value
Important Notes
3 Steering Knuckle Bolts
M12 x 1.5
Steering Knuckle Bolts
M12 x 1.5Torque Value
Important Notes
Sway Bar
This subsystem includes components that connect the sway bar to the suspension and chassis. Proper torque ensures the sway bar functions correctly, reducing body roll during cornering.
1 Sway Bar Link Nut
M10 x 1.25
Sway Bar Link Nut
M10 x 1.25Torque Value
Important Notes
2 Sway Bar Bracket Bolts
M8 x 1.25
Sway Bar Bracket Bolts
M8 x 1.25Torque Value
Important Notes
Wheels
This subsystem includes components that secure the wheel to the hub. Proper torque ensures the wheel is firmly attached, preventing loosening or detachment while driving.
1 Wheel Lug Nuts
M12 x 1.5
Wheel Lug Nuts
M12 x 1.5Torque Value
Important Notes
Subframe
This subsystem includes components that secure the subframe to the chassis. Proper torque is critical for maintaining structural integrity and alignment of the suspension components.
1 Subframe Bolts
M14 x 1.5
Subframe Bolts
M14 x 1.5Torque Value
Important Notes
Troubleshooting Guide
Common issues, diagnostic steps, and prevention guidelines
Common Issues
Bolt stretching, stripped threads, uneven torque patterns
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
Diagnostic Steps
Visual inspection, torque verification, thread assessment
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
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
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
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 for suspension bolts?
Why are correct torque specifications important for suspension bolts?
Proper torque is crucial to ensure that bolts are tight enough to prevent loosening and component failure during driving, but not so tight that they overstress the bolt and its mounting point. Overtightening can cause bolts to stretch or break, damaging the suspension. Undertightening can lead to movement, play, and eventual component failure. A common symptom of undertightened suspension bolts is clunking sounds when driving, especially over bumps.
Q2 Should I use new bolts when working on my suspension?
Should I use new bolts when working on my suspension?
It is highly recommended to replace any 'torque-to-yield' (TTY) bolts. TTY bolts are designed to stretch when tightened, and reusing them can compromise their integrity, leading to improper clamping force. For standard bolts, it's good practice to inspect them for any signs of wear, damage or corrosion. If any are damaged or corroded, replace them. Even if visually fine, replacing them can provide peace of mind, especially for older vehicles.
Q3 Do I need special tools to torque suspension bolts?
Do I need special tools to torque suspension bolts?
Yes, you need a torque wrench to accurately tighten bolts to the specified values. A regular wrench is not sufficient because it does not measure torque applied. A torque wrench will either click or display a value when the set torque is reached. Using an impact wrench is NOT recommended for final tightening as it is extremely difficult to accurately achieve the correct torque with this tool and can easily over-tighten a fastener.
Q4 What if I don't have the exact torque specifications for a specific bolt?
What if I don't have the exact torque specifications for a specific bolt?
While general torque specifications exist for certain bolt sizes and grades, you should always aim to use the manufacturer-specified torque values for suspension components. These values take into account the specific application, material, and load requirements of the suspension. Incorrect torque can compromise safety and performance. If you cannot find the value, consult a reputable repair manual or a professional mechanic.
Q5 Should I torque suspension bolts with the car on the ground or in the air?
Should I torque suspension bolts with the car on the ground or in the air?
Generally, final torquing of suspension bolts should be performed with the vehicle at its normal ride height (i.e. on the ground). This ensures the suspension components are in their loaded position, which is crucial for correct alignment and preventing premature bushing wear. Torque suspension bolts to the final torque when there is weight on the suspension (either on a lift with a simulated load or on the ground). Bolts may be initially tightened with the vehicle in the air to facilitate assembly.
Environmental Considerations
Temperature, humidity, and seasonal effects on torque specifications
Temperature Effects
Includes: High Heat, Cold Weather, Thermal Cycling
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
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
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 accurately applying specified torque values.
- Wide torque range (e.g., 10-150 ft-lbs)
- Click-type mechanism for accurate readings
- Durable construction
Torque Wrench (3/8 inch drive)
A calibrated torque wrench suitable for lower torque applications found in the suspension.
- Lower torque range (e.g., 5-80 ft-lbs)
- Click-type mechanism for accurate readings
- Smaller size for better access
Socket Set (Metric)
A comprehensive set of metric sockets to fit various suspension fasteners.
- Various socket sizes (e.g., 10mm, 12mm, 14mm, 17mm, 19mm, 22mm)
- 6-point sockets for better grip
- Durable construction
Wrench Set (Metric)
A set of metric open and box end wrenches for holding nuts while torquing bolts.
- Various wrench sizes to match sockets
- Combination wrenches preferred
- Durable construction
Breaker Bar
A long handled bar to apply additional leverage to stubborn fasteners.
- Extra long handle for increased leverage
- Durable construction
- Typically 1/2 inch drive
Service Procedures
Front Strut Assembly Torque Procedure
Proper torque application for the front strut assembly is critical for safety and performance. This includes the upper strut mount, lower strut bolts, and brake caliper bracket bolts.
- Loosen the wheel lug nuts.
- Raise the vehicle and support securely with jack stands.
- Remove the wheel.
- Loosen and remove the lower strut bolt and nut.
- Loosen the two upper strut mounting nuts, then remove them and remove the strut assembly.
- When reinstalling, loosely assemble all suspension components to avoid binding.
- Torque the lower strut bolt and nut to the manufacturer's specification using a torque wrench.
- Torque the upper strut mount nuts to the manufacturer's specification using a torque wrench.
- Reinstall the wheel and lower the vehicle.
- Torque the wheel lug nuts to specification.
Rear Trailing Arm Torque Procedure
Proper torque application for the rear trailing arm components, including the mounting bolts and the shock absorber mount.
- Loosen the wheel lug nuts.
- Raise the vehicle and support securely with jack stands.
- Remove the wheel.
- Loosen and remove the trailing arm mounting bolts and nuts.
- Loosen and remove the lower shock absorber bolt.
- When reinstalling, loosely assemble all components to avoid binding.
- Torque the trailing arm mounting bolts and nuts to the manufacturer's specification using a torque wrench.
- Torque the lower shock absorber mounting bolt to the manufacturer's specification using a torque wrench.
- Reinstall the wheel and lower the vehicle.
- Torque the wheel lug nuts to specification.
Front Lower Control Arm Torque Procedure
Proper torque application for the front lower control arm bolts and nuts, ensuring secure and proper suspension geometry.
- Loosen the wheel lug nuts.
- Raise the vehicle and support securely with jack stands.
- Remove the wheel.
- Loosen and remove the front lower control arm bolts and nuts.
- When reinstalling, loosely assemble all suspension components to avoid binding.
- Torque the front lower control arm bolts and nuts to the manufacturer's specification using a torque wrench.
- Reinstall the wheel and lower the vehicle.
- Torque the wheel lug nuts to specification.
Technical Service Bulletins
Front Lower Control Arm Bolt Loosening Issue
1987-06-15Reports of front lower control arm bolts loosening prematurely have been received due to improper torque application or bolt stretching. This can result in instability and noise.
Resolution: Inspect control arm bolts for damage or stretching. Replace with new OE bolts, and torque to manufacturer's specification. Double-check torque after 100 miles.
Rear Trailing Arm Bushing Bolt Inspection
1988-11-01Inspect rear trailing arm bushing bolts for proper torque as there have been reports of excessive wear of the bushings causing premature failure, often from bolts loosening.
Resolution: Check trailing arm bushing bolts. Replace worn bushings and tighten bolts to the correct torque specification. Consider using thread-locking compound.
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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.
- Working on vehicles can be dangerous. Always take proper safety precautions and use appropriate safety equipment.
- If you're unsure about any procedure, consult a qualified professional mechanic.