Publisher Description

Jeepers rejoice! Bring new life to your classic Jeep YJ with this new guide to off-road performance.More than 685,000 YJs were built from 1986 to 1995. They featured heavier wider leaf springs, track bars, and sway bars for improved handling. A massive range of parts are offered for these vehicles, which include lift kits, wheels up to 37 inches, larger brake rotors, high-performance aluminum remote reservoir shocks, stronger driveshafts and U-joints, and Dana 60 conversions. In Jeep Wrangler YJ 1987-1995: Performance Modifications, veteran author Don Alexander covers the 4.0 engine, transmissions (automatic and manual), transfer cases, axles, differentials, and driveshafts, steering boxes, brake upgrades, shocks, springs and lift kits, chassis strengthening, and interior upgrades.Whether you want to do some simple upgrades, such as a lift and tire combination, or want to go all out with a rock crawler-style suspension and an engine swap, this book will show you all your options.

Back Cover

More than 685,000 YJs were built for model years 1987 to 1995. They featured heavier and wider leaf springs, track bars, and sway bars for improved handling. A massive range of parts is offered for these vehicles, which includes lift kits, wheels up to 37 inches, larger brake rotors, high-performance aluminum remote reservoir shocks, stronger driveshafts and U-joints, and Dana 60 conversions. In Jeep Wrangler YJ 1987-1995: Performance Modifications , veteran author Don Alexander covers the 4.0 engine, transmissions (automatic and manual), transfer cases, axles, differentials, driveshafts, steering boxes, brake upgrades, shocks, springs and lift kits, chassis strengthening, and interior upgrades. Also, following recent market trends, this book includes information on swapping turbo diesels and small-block 360 engines as well. Whether you want to do some simple upgrades, such as a lift and tire combination, or want to go all out with a rock crawler-style suspension and an engine swap, this book will guide you through the process.

Author Biography

Quinn Thomas has been four-wheeling since the tender age of 17, and by age 20, he bought his first Jeep. He lives for rock crawling, camping, and exploring the backcountry with his personal JK. Quinn and wife, Heather, own and operate All J Products, which specializes in Jeep off-road performance in Big Bear, California. Don Alexander's passion and experience for motorized propulsion date back to 1959, when he first began kart racing. He later developed an insatiable passion for Jeeps. He is currently the proprietor of the Jeep 4x4 School and has trained thousands for off-road driving. He also competed in oval-track racing, drag racing, road racing, and land-speed runs. He holds the land-speed record of 222 mph for a diesel pickup. Alexander has authored 18 books and has written more than 1,000 magazine articles. He has produced off-road training videos and the SoCal 4x4 Adventures and Extreme Jeepin' TV shows. Alexander lives in Big Bear, California.

Table of Contents

About the Author Acknowledgments 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 Gear Ratios and Crawl Ratios Axle Swaps Ring and Pinion Gear Upgrades Central Axle Disconnect Front Axle Axle Upgrades Front Axle Shafts Rear Axle Shafts Splines Axle Housing Reinforcements Aftermarket Complete Axle Assemblies Axle Lockers U-joints, Yokes, and CV Joints Pinion Angle Ring and Pinion Break-in Procedure Chapter 7: Styling and Storage Upgrades Aftermarket Tops Sun Shades Tube Doors Seat Upgrades Steering Wheel Mirrors Fluid Storage Metal Storage Boxes Interior Storage Roof Racks 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 Turbodiesel 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 D-Ring Shackles Ground Anchor for Winching Extraction Boards, Sand Ladders, and Bridging Ladders Trail Tools and Spare Parts Tire Repair Kit Simple Tools and Spare Parts Chapter 12: All J Products/Jeep 4x4 School Street-Legal YJ Rock Crawler Source Guide

Long Description

Covers the YJ 4.0 engine, transmissions, transfer cases, axles, differentials, driveshafts, steering boxes, brake upgrades, shocks, springs and lift kits, chassis strengthening and interior upgrades. Whether doing some simple upgrades or going all out, this book will guide you through the process.

Details