Mitsubishi Mitsubishi Raider 2006-2009 4.7L V8 Engine Bolt Torque Specifications & Fastener Values
Mitsubishi Mitsubishi Raider 2006-2009

Mitsubishi Mitsubishi Raider 2006-2009 4.7L V8 Engine Bolt Torque Specifications

Detailed bolt torque specifications for the 4.7L V8 engine of the 2006-2009 Mitsubishi Raider, including cylinder head, main bearing, and connecting rod bolts.

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

Cylinder head and intake manifold

These bolts secure the cylinder head to the engine block and the intake manifold to the cylinder head, ensuring proper sealing and airflow.

1

Cylinder Head Bolts

M12 x 1.5
Torque Value
25 ft-lbs (34 N·m)
Important Notes
Proper torque ensures even pressure distribution and prevents engine damage.
2

Intake Manifold to Cylinder Head Bolts

M10 x 1.25
Torque Value
22.5 ft-lbs (30.5 N·m)
Important Notes
Estimated value, consult service manual for specific instructions.

Main bearings and crankshaft

These bolts support the main bearings and secure the crankshaft in place, allowing for smooth engine operation.

1

Main Bearing Bolts

M14 x 1.5
Torque Value
100 ft-lbs (135 N·m)
Important Notes
Proper torque ensures the bearings are securely fastened.
2

Crankshaft Pulley/Harmonic Balancer Bolt

M16 x 1.5
Torque Value
100 ft-lbs (135 N·m)
Important Notes
Proper torque ensures smooth engine operation.

Connecting rods and pistons

These bolts secure the connecting rods to the crankshaft and the pistons to the connecting rods, transmitting the force of the pistons to the crankshaft.

1

Connecting Rod Nuts

M12 x 1.25
Torque Value
45 ft-lbs (61 N·m)
Important Notes
Proper torque ensures proper clearance and alignment.

Valvetrain and timing system

These bolts secure the valve train and timing system components, ensuring proper valve operation and timing.

1

Valve Cover Bolts

M8 x 1.25
Torque Value
35 ft-lbs (4 N·m)
Important Notes
Proper torque ensures a secure seal.
2

Timing Belt/Chain Tensioner Bolt

M10 x 1.25
Torque Value
21 ft-lbs (28 N·m)
Important Notes
Proper torque ensures proper tension and accurate timing.
3

Camshaft Sprocket Bolt

M12 x 1.5
Torque Value
40 ft-lbs (54 N·m)
Important Notes
Proper torque ensures proper alignment and tension.

Oil and cooling system

These bolts secure the oil and cooling system components, ensuring proper oil flow and cooling.

1

Oil Pan Bolts

M10 x 1.25
Torque Value
105 ft-lbs (12 N·m)
Important Notes
Proper torque ensures a secure seal and prevents leaks.
2

Oil Filter Housing Bolt

M10 x 1.25
Torque Value
105 ft-lbs (12 N·m)
Important Notes
Proper torque ensures a secure seal and prevents leaks.

Fuel system

These bolts secure the fuel system components, ensuring proper fuel flow and pressure.

1

Fuel Injector Bolts

M8 x 1.25
Torque Value
105 ft-lbs (12 N·m)
Important Notes
Proper torque ensures a secure seal and proper fuel flow.

Ignition system

These bolts secure the ignition system components, ensuring proper spark and engine operation.

1

Spark Plugs

M14 x 1.25
Torque Value
20 ft-lbs (27 N·m)
Important Notes
Proper torque ensures the spark plugs are securely seated.

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 importance of proper torque specs for the 4.7L-V8 engine?

Proper torque specs ensure that the engine's components are securely fastened, preventing damage from vibration, heat, and stress. Incorrect torque can lead to premature wear, leaks, or even engine failure.

Q2

How often should I check and maintain the torque specs of my 4.7L-V8 engine?

It's recommended to check torque specs during routine maintenance, such as oil changes or tune-ups. Additionally, if you've recently replaced or repaired engine components, re-torque the bolts to the specified values to ensure proper sealing and prevent damage.

Q3

Can I use a torque wrench with a socket extension to tighten bolts on my 4.7L-V8 engine?

Yes, but be cautious. Socket extensions can affect the accuracy of the torque reading. Use a high-quality torque wrench with a calibrated extension, and always refer to the manufacturer's instructions for proper usage.

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

A precision torque wrench for accurate bolt tightening

  • Range: 10-150 ft-lbs
  • Accuracy: ±3%
Learn more

Socket Set

A set of sockets for various bolt sizes

  • Sizes: 10mm, 12mm, 14mm, 17mm
  • Material: Chrome Vanadium
Learn more

Breaker Bar

A long-handled breaker bar for added leverage

  • Length: 24 inches
  • Material: Steel
Learn more
Service Procedures

Cylinder Head Bolt Tightening Procedure

A step-by-step guide to tightening cylinder head bolts

  • Step 1: Remove valve cover and spark plug wires
  • Step 2: Apply threadlocker to cylinder head bolts
  • Step 3: Tighten cylinder head bolts in sequence to 30 ft-lbs
  • Step 4: Tighten cylinder head bolts an additional 90 degrees
View full procedure

Engine Oil Pan Bolt Tightening Procedure

A step-by-step guide to tightening engine oil pan bolts

  • Step 1: Remove oil pan skid plate
  • Step 2: Apply threadlocker to oil pan bolts
  • Step 3: Tighten oil pan bolts in sequence to 20 ft-lbs
  • Step 4: Tighten oil pan bolts an additional 30 degrees
View full procedure
Technical Service Bulletins

TSB-06-001: Cylinder Head Bolt Tightening Specification Update

2006-02-15

An update to the cylinder head bolt tightening specification to prevent engine damage

2006-2009 Mitsubishi Raider 4.7L-V8

Resolution: Tighten cylinder head bolts to 30 ft-lbs + 90 degrees

TSB-08-002: Engine Oil Pan Bolt Tightening Specification Update

2008-05-01

An update to the engine oil pan bolt tightening specification to prevent oil leaks

2006-2009 Mitsubishi Raider 4.7L-V8

Resolution: Tighten engine oil pan bolts to 20 ft-lbs + 30 degrees

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.

Facebook Contact
15+ Years
Experience
500+ Guides
Guides
50+ Makes
Vehicles
1000+ Solutions
Solutions

Diagnostic

Specialized in advanced diagnostic techniques using modern scan tools and oscilloscopes.

Repair

Expert in both traditional mechanical repairs and modern vehicle systems.

Additional Expertise

Documentation

Created over 500 detailed repair guides and technical documents.

Training

Conducted technical training sessions and contributed to repair databases.

Certifications & Research

Certifications

  • ASE Master Technician Certification
  • Advanced Diagnostic Specialist
  • Hybrid/Electric Vehicle Systems
  • Performance Tuning Expert

Research & Community

Actively researches emerging technologies and contributes to automotive forums.

Legal Disclaimer

Important information about using this content

Always refer to your vehicle's service manual and take appropriate safety precautions when performing any maintenance or repairs.

General Information
The information provided on this website is for general informational purposes only. While we strive to maintain accuracy in our content, all specifications, procedures, and technical information should be verified against your vehicle's official service manual or with the manufacturer directly.
Warranty & Liability

The content on this website is provided "as is" without any representations or warranties, express or implied. We make no representations or warranties regarding the accuracy, completeness, or availability of the information.

We shall not be liable for any direct, indirect, special, or consequential damages arising from the use of information on this website.

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.
Intellectual Property
All content, including text, images, and specifications, is protected by copyright and other intellectual property laws. Any unauthorized use or reproduction is prohibited.

© 2025 Mitsubishi Specs. All rights reserved.

Privacy Policy Terms of Service