Jeep Wrangler YJ 1987-1995: Performance Modifications is a book that provides readers with the knowledge and skills for performance tuning for the Jeep Wrangler YJ series. The Jeep Wrangler YJ is a vehicle that was produced by Jeep in the 80’s. Performance re-engineering and tweaking will bring a breath of fresh air to these vehicles, making them even more valuable. In this article, let’s learn more about the Jeep Wrangler YJ performance upgrade from those who have been successful.

Jeep Wrangler YJ 1987-1995: Performance Modifications Information 

Title: Jeep Wrangler YJ 1987-1995: Performance Modifications

Author: Don Alexander, Quinn Thomas

Language: English 

Pages: 144

Illustrations: 410 

Publication Date: 15/11/2019

Publisher: Car Tech 

Format: PDF 

Note: You should Download this book on Firefox Browser to ensure the best quality. 

What’s in Jeep Wrangler YJ 1987-1995: Performance Modifications

About the Author

Don Alexander and Quinn Thomas Both are very passionate about making and modifying jeeps. Currently, Quinn Thomas is the owner of the Jeep 4×4 Off-Road Driving School. He is the author of more than 16 books and over 1000 articles on automotive technology.

Jeep Wrangler YJ 1987-1995: Performance Modifications Content

This book has a total of 12 chapters, namely:

Chapter 1: Jeep Wrangler YJ 

• Jeep Wrangler YJ History 
• Suspension and Axles 
• Trim Levels 
• YJ Purchasing Considerations 

Chapter 2: Tires and Wheels 

• Stock Replacement Tires 
• Off-Road Tires 
• Tire Size, Diameters, and Ground Clearance 
• Tire Cutting, Slashing, and Ply Ratings 
• Wheels 
• Wheel Size 
• Wheel and Tire Balancing 
• Tire Rotation 
• Choosing the Right Tires and Wheels 
• Wheel Spacers and Adapters 
• Wheel and Tire Care and Maintenance 

Chapter 3: Lifts, Suspension, and Steering 

• Lifting a Jeep Wrangler YJ 
• Coil Springs Versus Leaf Springs 
• Articulation 
• Suspension Control 
• Control Arm Mounting Brackets 
• Spring and Control Arm Joints 
• Track Bars 
• Shock Absorbers 
• Types of Shocks 
• Hydraulic Bump Stops 
• Steering System 
• Steering Knuckles, Unit Bearings, and Ball Joints 
• Steering Hydraulics 
• Suspension and Steering Alignment 
• Chapter 4: Brake Upgrades 

Brake System Basics 

• The Need for More Braking Performance 
• Brake Rotors 
• Brake Calipers 
• Disc Brake Conversion Kits for Rear Drum Brakes 
• Brake Master Cylinders and Power Brake Boosters 
• Brake Drums and Shoes 
• Brake Pads 
• Brake Flex Lines
• Brake Fluid 

Chapter 5: Bumpers, Armor, and Protection 

• Skid Plates 
• Aftermarket Skid Plate Armor 
• Skid Plate Protection 
• Rock Sliders 
• Body Armor 
• Half Doors and Tube Trail Doors 
• Fenders 
• Front Bumpers 
• Rear Bumpers 
• Roll Cage 

Chapter 6: Transmissions, Drivelines, Axles, Housings, Driveshafts, and Lockers 

• Stock Jeep Wrangler YJ Axle Assemblies 
• Axle Gearing 
• Stock Wrangler YJ Transmissions 
• Stock Wrangler YJ Transfer Cases 
• Slip Yoke Eliminator 

…

Chapter 7: Styling and Storage Upgrades 

• Aftermarket Tops 
• Sun Shades 
• Tube Doors 
• Seat Upgrades
• Steering Wheel 
• Mirrors 
• Fluid Storage 

…

Chapter 8: Electrical Upgrades and Lights

• Battery Upgrades
• Dual Battery Systems
• Alternators
• Auxiliary Lighting 

…

Chapter 9: Engine Upgrades and Cooling System 

• Cold Air Intakes 
• Exhaust Systems 
• Ignition Upgrades 
• Heavy-Duty Clutch Kits 
• Forced Induction 
• Cooling System 

…

Chapter 10: Popular Engine Swaps 

Engine Weights 

• GM LS 
• Small-Block Ford 
• Cummins 2.8 Turbo Diesel Crate Engine 

Chapter 11: Winches, Vehicle Recovery Gear, and Trail Tools

Winches 

• Steel Versus Synthetic Winch Line 
• Winch Controllers 
• Roller Fairlead Versus Hawse Fairlead 
• Winch Accessories 
• Hi-Lift Jack 
• Straps 

…. 

Chapter 12: All J Products/Jeep 4×4 School Street-Legal YJ Rock Crawler 

Each chapter includes custom parts and different upgrade methods, making it possible for readers to select and install the right parts for their vehicles. In addition, the author also conveys experiences and notes when building Jeep Wrangler YJ 1987-1995.

Although this is a technical document, with the detailed and clear instructions of the authors, even beginners can easily understand and follow.