Dodge Avenger 2008-2014 2.7L Engine Bolt Torque Specifications & Fastener Values
Dodge Avenger 2008-2014

Dodge Avenger 2008-2014 2.7L Engine Bolt Torque Specifications

Comprehensive guide to torque specifications for all major bolts on the 2.7L engine in the 2008-2014 Dodge Avenger.

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

Specifications for bolts and studs related to securing the cylinder head to the engine block. Proper torque is crucial for maintaining a tight seal to prevent leaks and gasket failure.

1

Cylinder Head Bolts

M12 x 1.75
Important Notes
Apply a torque sequence per service manual, typically from the center outward in a crisscross pattern. Always use new bolts per manufacturer recommendations.
2

Exhaust Manifold Studs to Cylinder Head

M8 x 1.25
Torque Value
8 ft-lbs (11 N·m)
Important Notes
Install studs into the cylinder head before installing the exhaust manifold.
3

Exhaust Manifold to Cylinder Head Bolts

M8 x 1.25
Torque Value
20 ft-lbs (27 N·m)
Important Notes
Torque bolts in a sequence working from the center out to the ends, repeat 2-3 times to ensure even clamping pressure
4

Cylinder Head Cover Bolts

M6 x 1.0
Torque Value
6 ft-lbs (8 N·m)
Important Notes
Tighten bolts evenly in a crisscross pattern, starting from the center.

Crankshaft And Connecting Rod

Specifications for bolts and nuts related to the crankshaft and connecting rods. Proper torque is essential for smooth engine operation and preventing bearing failure.

1

Main Bearing Bolts

M10 x 1.5
Important Notes
Apply a torque sequence working from the center outward in a crisscross pattern. Always use new bolts per manufacturer recommendations.
2

Connecting Rod Nuts

M9 x 1.25
Torque Value
48 ft-lbs (65 N·m)
Important Notes
Torque connecting rod nuts in two steps; a first torque step, then a final torque step, usually no torque angle is needed.
3

Flywheel Bolts

M10 x 1.5
Torque Value
85 ft-lbs (115 N·m)
Important Notes
Tighten bolts in a star pattern to ensure even clamping force.
4

Crankshaft Pulley/Harmonic Balancer Bolt

M14 x 1.5
Torque Value
105 ft-lbs (142 N·m)
Important Notes
Ensure the crankshaft is locked to prevent rotation while tightening this bolt.

Valvetrain

Specifications for bolts related to the valvetrain components like rocker arms and camshafts. Proper torque is crucial for correct valve operation and avoiding damage.

1

Rocker Arms/Shafts Bolts

M8 x 1.25
Torque Value
21 ft-lbs (28 N·m)
Important Notes
Tighten evenly in a crisscross pattern.
2

Camshaft Sprocket Bolt

M10 x 1.25
Torque Value
75 ft-lbs (102 N·m)
Important Notes
Ensure camshaft is locked to prevent rotation while tightening this bolt.

Engine Covers And Sealing

Specifications for bolts used in various covers and sealing components of the engine. Proper torque is vital to prevent leaks and maintain engine integrity.

1

Valve Cover Bolts

M6 x 1.0
Torque Value
9 ft-lbs (12 N·m)
Important Notes
Tighten bolts evenly in a crisscross pattern, starting from the center.
2

Oil Pan Bolts

M6 x 1.0
Torque Value
9 ft-lbs (12 N·m)
Important Notes
Tighten bolts evenly in a crisscross pattern to prevent gasket distortion.
3

Oil Drain Plug Bolt

M14 x 1.5
Torque Value
20 ft-lbs (27 N·m)
Important Notes
Use a new crush washer when installing the oil drain plug.
4

Oil Filter Housing Bolt

M6 x 1.0
Torque Value
9 ft-lbs (12 N·m)
Important Notes
Tighten evenly and check for leaks after installation.

Intake And Exhaust

Specifications for bolts related to the intake and exhaust system components. Proper torque is crucial for preventing leaks and maintaining performance.

1

Intake Manifold Bolts

M6 x 1.0
Torque Value
9 ft-lbs (12 N·m)
Important Notes
Tighten bolts in a sequence working from the center out to the ends.
2

Throttle Body Bolts

M6 x 1.0
Torque Value
9 ft-lbs (12 N·m)
Important Notes
Tighten bolts evenly, ensure a proper seal to prevent vacuum leaks.
3

EGR Valve Bolts

M6 x 1.0
Torque Value
9 ft-lbs (12 N·m)
Important Notes
Ensure proper alignment to prevent exhaust leaks.

Fuel System

Specifications for bolts securing fuel system components. Proper torque is critical to prevent fuel leaks and ensure safe operation.

1

Fuel Rail Bolts

M6 x 1.0
Torque Value
9 ft-lbs (12 N·m)
Important Notes
Tighten evenly to avoid fuel leaks.
2

Fuel Injector Bolts/Clips

M6 x 1.0
Torque Value
9 ft-lbs (12 N·m)
Important Notes
Tighten evenly to ensure a proper seal. Some systems may use clips, check for secure fit.

Cooling System

Specifications for bolts securing the cooling system components. Proper torque is crucial to prevent coolant leaks and ensure efficient cooling.

1

Water Pump Bolts

M6 x 1.0
Torque Value
9 ft-lbs (12 N·m)
Important Notes
Tighten bolts evenly to avoid leaks.
2

Water Pump Pulley Bolts

M6 x 1.0
Torque Value
9 ft-lbs (12 N·m)
Important Notes
Ensure proper alignment of pulley.
3

Thermostat Housing Bolts

M6 x 1.0
Torque Value
9 ft-lbs (12 N·m)
Important Notes
Tighten evenly, use new gasket or sealant.
4

Coolant Temperature Sensor Bolt/fitting

M10 x 1.0
Torque Value
11 ft-lbs (15 N·m)
Important Notes
Do not overtighten the sensor, ensure proper seating to prevent leaks

Ignition System

Specifications for bolts securing the ignition system components. Proper torque is essential for correct sensor operation and preventing misfires.

1

Ignition Coil Bolts

M6 x 1.0
Torque Value
9 ft-lbs (12 N·m)
Important Notes
Tighten evenly to ensure proper coil contact
2

Spark Plugs

M14 x 1.25
Torque Value
20 ft-lbs (27 N·m)
Important Notes
Ensure plugs are seated correctly by hand first before torquing, using new spark plugs is recommended.

Sensors And Timing

Specifications for bolts securing engine sensors and timing components. Proper torque is critical for correct sensor readings and engine performance.

1

Camshaft Position Sensor Bolt

M6 x 1.0
Torque Value
7 ft-lbs (10 N·m)
Important Notes
Do not overtighten, ensure sensor is seated properly.
2

Crankshaft Position Sensor Bolt

M6 x 1.0
Torque Value
7 ft-lbs (10 N·m)
Important Notes
Do not overtighten, ensure sensor is seated properly.
3

Knock Sensor Bolt

M8 x 1.25
Torque Value
15 ft-lbs (20 N·m)
Important Notes
Ensure sensor is seated properly, and do not overtighten.
4

Timing Belt/Chain Tensioner Bolt

M8 x 1.25
Torque Value
21 ft-lbs (28 N·m)
Important Notes
Torque to specified value to maintain proper tension and engine timing. Always ensure proper timing procedures are followed.

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 it important to use the correct torque specifications?

Using the correct torque ensures proper clamping force, preventing leaks, component failure, and damage to threads. Over-tightening can strip threads or crush gaskets, while under-tightening can lead to loosening and leaks. For instance, overtightening a valve cover bolt on the 2.7L could warp the cover, causing an oil leak, while under-torquing it could lead to the same problem.

Q2

What type of torque wrench should I use?

A calibrated torque wrench, either beam-type, click-type, or digital, is essential. Click-type wrenches are most common for general use, providing an audible 'click' when the desired torque is reached. Digital wrenches offer even more precision. Regardless, ensure your wrench is within its calibration range for the specified torque values on your 2.7L Avenger.

Q3

Do I need to replace bolts when working on the 2.7L engine?

Certain bolts, especially those used for critical components like the cylinder head or connecting rods, are 'torque-to-yield' (TTY) bolts. These should always be replaced when removed, as they are designed to stretch and cannot be reused safely. Consult your service manual for specific bolt replacement recommendations on the 2.7L engine. If you reuse TTY bolts it can cause engine failure. For example, not replacing the head bolts can lead to a blown head gasket, leading to very costly repairs.

Q4

What is the proper torque sequence for components?

Torque sequences are crucial for even pressure distribution. Follow the specific sequence detailed in your service manual for components like the intake manifold, cylinder head, and oil pan on the 2.7L. For example, when tightening the cylinder head bolts, a proper sequence ensures the head is properly seated and avoids warping. Typically, you would start from the center and work your way outwards in a spiral pattern, tightening in stages.

Q5

What do I do if I strip a bolt hole on the 2.7L engine?

Stripping a bolt hole requires repair. Options include using a thread repair kit (e.g., Helicoil) or, in more severe cases, potentially needing professional machine shop services. Do not try to force a bolt into a stripped hole, as this can cause more damage. It's important to assess the damage carefully before attempting a repair, ensuring it's done to the manufacturer’s standards. For example, stripped intake manifold holes can cause vacuum leaks and poor performance.

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 tool for applying specific torque values to fasteners.

  • Click-type or digital display
  • Range encompassing required torque specifications
Learn more

Socket Set (Metric)

A set of sockets in various metric sizes to fit the fasteners.

  • Sizes appropriate for 2.7L engine
  • 6-point sockets recommended
Learn more

Extension Bars

Used to reach fasteners in recessed locations.

  • Various lengths
  • Strong and durable construction
Learn more

Universal Joint

Allows for socket use at an angle.

  • Provides flexibility in tight spaces
  • Durable construction
Learn more
Service Procedures

Cylinder Head Bolt Tightening Procedure (2.7L)

Proper sequence and torque values for tightening cylinder head bolts.

  • Clean all bolt threads and surfaces.
  • Install cylinder head and hand-tighten all bolts.
  • Torque bolts to 30 ft-lbs in the specified sequence.
  • Torque bolts to 50 ft-lbs in the specified sequence.
  • Rotate bolts 90 degrees in the specified sequence.
  • Rotate bolts an additional 90 degrees in the specified sequence.
  • Verify final torque specification after rotation.
View full procedure

Intake Manifold Bolt Tightening Procedure (2.7L)

Torquing the intake manifold bolts to the proper specification and sequence

  • Clean all bolt threads and surfaces.
  • Install intake manifold and hand-tighten bolts.
  • Torque bolts to 10 ft-lbs in the specified sequence.
  • Torque bolts to 20 ft-lbs in the specified sequence.
View full procedure

Exhaust Manifold Bolt Tightening Procedure (2.7L)

Proper torque for securing the exhaust manifold to the cylinder head.

  • Clean all bolt threads and surfaces.
  • Install exhaust manifold and hand-tighten bolts.
  • Torque bolts to 18 ft-lbs in the specified sequence.
  • Verify final torque specification.
View full procedure

Connecting Rod Bolt Tightening Procedure (2.7L)

Tightening the connecting rod bolts to the proper specification and sequence

  • Clean all bolt threads and surfaces.
  • Install connecting rod and cap and hand-tighten bolts.
  • Torque bolts to 15 ft-lbs.
  • Rotate bolts 50 degrees using an angle meter.
View full procedure

Main Bearing Cap Bolt Tightening Procedure (2.7L)

Tightening the main bearing cap bolts to the proper specification and sequence

  • Clean all bolt threads and surfaces.
  • Install bearing cap and hand-tighten bolts.
  • Torque bolts to 20 ft-lbs.
  • Rotate bolts 75 degrees using an angle meter.
View full procedure

Oil Pan Bolt Tightening Procedure (2.7L)

Torquing the oil pan bolts to the proper specification

  • Clean all bolt threads and surfaces.
  • Install oil pan and hand-tighten bolts.
  • Torque bolts to 105 inch-lbs.
  • Verify final torque specification.
View full procedure
Technical Service Bulletins

Engine Oil Leakage from Cylinder Head Gasket

2010-03-15

Some 2008-2010 2.7L engines may experience oil leakage from the cylinder head gasket due to improper bolt torque and or installation.

2008-2010 Dodge Avenger with 2.7L engine

Resolution: Verify cylinder head bolt torque and correct as necessary. If oil leak persists, replace cylinder head gasket using proper procedure. Use new bolts. Follow recommended cylinder head bolt tightening procedure.

Intake Manifold Gasket Leak

2011-07-20

Some 2010-2012 2.7L engines may experience vacuum leaks due to a faulty intake manifold gasket. Ensure correct intake manifold bolt torque during reinstallation.

2010-2012 Dodge Avenger with 2.7L engine

Resolution: Replace the intake manifold gasket and ensure bolts are torqued to spec using proper sequence. If problem persists, check for damaged or warped mating surfaces.

About the Author

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Alan Montanye - Automotive Technical Specialist
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Alan Montanye

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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.
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