Reviving a Legend: A Comprehensive Guide to 1987 Jeep YJ Parts

Reviving a Legend: A Comprehensive Guide to 1987 Jeep YJ Parts Truckparts.Truckstrend.com

The 1987 Jeep YJ marked a significant shift in Jeep's design language, introducing the iconic square headlights that sparked debate but ultimately defined a generation. These rugged, utilitarian vehicles are now highly sought after by off-road enthusiasts and collectors alike. Maintaining and restoring a 1987 Jeep YJ requires a deep understanding of its specific parts and systems. This guide serves as a comprehensive resource for navigating the world of '87 YJ parts, from essential components to performance upgrades, ensuring your square-headlight Jeep continues to conquer trails for years to come.

Introduction: Why Understanding '87 YJ Parts is Crucial

Reviving a Legend: A Comprehensive Guide to 1987 Jeep YJ Parts

The 1987 Jeep YJ was a transitional model, sharing characteristics with both the earlier CJ series and the later TJ series. While some parts are interchangeable with other years, many are unique to the '87 YJ, or at least to the early YJ production run (1987-1990). Identifying the correct parts is crucial for successful repairs, restorations, and modifications. Using the wrong part can lead to performance issues, safety hazards, or even damage to other components. Whether you're tackling a simple tune-up or a full-blown restoration, a solid understanding of '87 YJ parts is your key to success.

Section 1: Engine and Powertrain Components

The 1987 Jeep YJ was offered with several engine options, each requiring specific parts for maintenance and repair. The most common engines were:

• 2.5L AMC 150 I4: A reliable but underpowered option, parts are generally readily available.
• 4.2L AMC 258 I6: The workhorse of the YJ, offering a good balance of power and durability. This engine often benefits from performance upgrades.

Key Engine Parts and Considerations:

• Engine Rebuild Kits: Include pistons, rings, bearings, gaskets, and seals necessary for a complete engine overhaul. Pay attention to bore size and compression ratio when selecting a kit.
• Carburetor (4.2L): The Carter BBD carburetor is notorious for its complexity and potential issues. Consider upgrading to a Weber carburetor for improved performance and reliability.
• Fuel Injection Conversion (4.2L): Converting the 4.2L to fuel injection offers significant improvements in fuel economy, throttle response, and cold starting. Several aftermarket kits are available.
• Distributor and Ignition System: Ensure the distributor is properly timed and the ignition components (spark plugs, wires, coil) are in good condition for optimal engine performance.

• Cooling System: Radiator, water pump, thermostat, and hoses are crucial for preventing overheating. Inspect regularly and replace as needed.
• Exhaust System: Check for leaks and corrosion. Upgrading to a performance exhaust system can improve horsepower and torque.

Transmission and Transfer Case:

• AX-5 (I4) / AX-15 (I6) Manual Transmissions: These transmissions are generally reliable, but can suffer from worn synchronizers and bearings. Rebuild kits are available.
• TorqueFlite 999 Automatic Transmission (Optional): A robust transmission, but requires regular fluid changes and filter replacements.
• NP231 Transfer Case: A durable transfer case with selectable 4-wheel drive. Check for leaks and ensure proper chain tension. Rebuild kits are available.

Section 2: Suspension and Steering

The suspension and steering systems are critical for both on-road handling and off-road capability. The '87 YJ features a leaf spring suspension system.

Key Suspension and Steering Parts and Considerations:

• Leaf Springs: Over time, leaf springs can sag and lose their spring rate. Consider replacing them with new springs or adding leaf spring shackles for a slight lift.
• Shocks: Worn shocks can negatively impact ride quality and handling. Upgrade to performance shocks for improved off-road performance.
• Bushings: Rubber bushings in the suspension and steering systems can deteriorate over time, leading to sloppy handling. Replace with polyurethane bushings for improved durability and performance.
• Steering Box: The steering box can develop play over time. Adjusting the steering box can sometimes alleviate this issue, but a rebuild or replacement may be necessary.
• Steering Linkage: Tie rod ends, drag link, and ball joints should be inspected regularly for wear and play. Replace as needed.
• Power Steering Pump: Check for leaks and ensure the power steering fluid is at the correct level.

Section 3: Brakes and Axles

Reliable brakes and sturdy axles are essential for safety and performance.

Key Brake and Axle Parts and Considerations:

• Brake Pads and Rotors/Drums: Replace brake pads and rotors/drums when they are worn or damaged. Consider upgrading to performance brake pads for improved stopping power.
• Brake Lines: Inspect brake lines for leaks and corrosion. Replace with stainless steel brake lines for improved durability and performance.
• Master Cylinder: A faulty master cylinder can cause brake failure. Replace if necessary.
• Wheel Cylinders (Drum Brakes): Inspect wheel cylinders for leaks. Replace if necessary.
• Axle Shafts: Inspect axle shafts for cracks or bends. Replace with stronger aftermarket axle shafts for improved durability.
• U-Joints: U-joints are a common wear item in the drivetrain. Replace as needed.
• Differential: Check the differential fluid level and condition. Replace with fresh fluid at recommended intervals. Consider upgrading to a limited-slip differential or locker for improved off-road traction.

Section 4: Body and Exterior

The body and exterior components contribute to the YJ's iconic look and provide protection for the occupants.

Key Body and Exterior Parts and Considerations:

• Body Panels: Rust is a common problem with older YJs. Repair or replace rusted body panels as needed.
• Windshield: A cracked or damaged windshield should be replaced for safety reasons.
• Soft Top/Hard Top: Choose a soft top or hard top that meets your needs and budget.
• Doors: The '87 YJ features removable doors. Ensure the door hinges are in good condition.
• Bumpers: Replace damaged bumpers with aftermarket bumpers for improved protection and aesthetics.
• Lights: Ensure all lights are working properly. Upgrade to LED lights for improved visibility.

Section 5: Interior Components

The interior of the '87 YJ is spartan but functional.

Key Interior Parts and Considerations:

• Seats: Replace worn or damaged seats with aftermarket seats for improved comfort and support.
• Carpeting/Floor Mats: Replace worn carpeting or floor mats to improve the appearance of the interior.
• Dashboard: The dashboard can crack and fade over time. Repair or replace as needed.
• Gauges: Ensure all gauges are working properly.
• Radio/Speakers: Upgrade the radio and speakers for improved audio quality.

Section 6: Electrical System

A functioning electrical system is essential for the proper operation of the YJ.

Key Electrical System Parts and Considerations:

• Battery: Ensure the battery is in good condition and properly charged.
• Alternator: Check the alternator output voltage. Replace if necessary.
• Starter: A faulty starter can prevent the engine from starting. Replace if necessary.
• Wiring Harness: Inspect the wiring harness for damage or corrosion. Repair or replace as needed.
• Fuses: Replace blown fuses with the correct amperage.

Section 7: Finding the Right Parts and Resources

Locating the correct parts for your '87 YJ can sometimes be challenging. Here are some resources to consider:

• Online Retailers: Companies like Quadratec, Morris 4x4 Center, and Summit Racing offer a wide selection of YJ parts.
• Local Auto Parts Stores: Many local auto parts stores can order parts for your YJ.
• Jeep Forums and Clubs: Online forums and local Jeep clubs are a great resource for finding parts and advice.
• Junkyards: Junkyards can be a good source for used parts.
• Original Jeep Parts Suppliers: Some suppliers specialize in original Jeep parts.

Section 8: Tips for Maintaining Your '87 YJ

• Regular Maintenance: Perform regular maintenance, such as oil changes, filter replacements, and fluid checks.
• Inspect Regularly: Inspect your YJ regularly for signs of wear and tear.
• Address Problems Promptly: Address problems promptly before they become more serious.
• Use Quality Parts: Use quality parts when repairing or upgrading your YJ.
• Keep it Clean: Keep your YJ clean to prevent rust and corrosion.

Price Table for Common 1987 Jeep YJ Parts (Estimates)

Part	Price Range (USD)	Notes
Engine Rebuild Kit (2.5L)	$400 - $800	Varies depending on brand and components included.
Engine Rebuild Kit (4.2L)	$500 - $1000	Varies depending on brand and components included.
Weber Carburetor Kit	$300 - $500	For 4.2L engine, includes necessary adapters and hardware.
Fuel Injection Kit (4.2L)	$1000 - $2500	Complete kit for converting 4.2L engine to fuel injection.
Leaf Springs (Pair)	$200 - $600	Varies depending on brand and lift height.
Shocks (Set of 4)	$100 - $500	Varies depending on brand and performance level.
Polyurethane Bushing Kit	$100 - $300	Complete kit for replacing rubber bushings.
Brake Pads (Front Pair)	$30 - $100	Varies depending on brand and material.
Brake Rotors (Front Pair)	$50 - $200	Varies depending on brand and quality.
Soft Top	$300 - $1000	Varies depending on brand, material, and features.
Hard Top	$500 - $2000	Used hard tops can often be found at lower prices.
Seats (Pair)	$200 - $1000+	Varies greatly depending on brand, style, and features.
Battery	$100 - $200	Varies depending on cold cranking amps (CCA) and brand.
Alternator	$100 - $300	Varies depending on amperage output and brand.
Starter	$80 - $200	Varies depending on brand and quality.

Disclaimer: Prices are estimates and can vary depending on the supplier, location, and condition of the part. Always verify compatibility before purchasing.

Frequently Asked Questions (FAQ)

• Q: Are parts interchangeable between different YJ years?

  • A: Some parts are, but many are specific to certain years or production runs. Always verify compatibility before purchasing.

• Q: Where can I find the part number for a specific part?

  • A: Part numbers can often be found in the factory service manual or by searching online parts catalogs.

• Q: Should I use OEM or aftermarket parts?

  • A: OEM parts are generally of higher quality, but aftermarket parts can be more affordable or offer improved performance.

• Q: How can I tell if a part is compatible with my '87 YJ?

  • A: Verify the part number and description against your vehicle's VIN and specifications. Consult with a parts expert if you are unsure.

• Q: What are some common problems with the '87 YJ?

  • A: Common problems include rust, carburetor issues (4.2L), worn suspension components, and electrical problems.

Conclusion: Keeping the YJ Legacy Alive

The 1987 Jeep YJ holds a special place in Jeep history. Understanding its specific parts and systems is essential for maintaining and restoring these iconic vehicles. By using this guide as a resource, you can ensure your '87 YJ continues to conquer trails and turn heads for years to come. The YJ is more than just a vehicle; it's a piece of automotive history, and by understanding its parts, you become a part of that legacy. Happy Jeeping!