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PREFACE:

It is often said that engines never change. Although large changes are not the norm, the internal combustion (IC) engine is constantly evolving. When the first edition of this text was written in 1980, futurists were questioning whether the four stroke cycle engine would still be around in 20 years.

 The long history of this well proven engine has shown continuous small refinements, and it is still the engine that powers most of today’s vehicles. Compared with the engines that powered the muscle cars of 1980, today’s engines are more refined, lighter, and offer improved performance and durability.

 Automotive Engines, Sixth Edition provides the reader with the comprehensive knowledge needed to repair and rebuild these automotive engines. The most complete book of its kind, it takes a generic, rather than product-specific, approach.

 The text provides all of the need-to-know information in an easy-to-understand format. Much effort has gone into organizing this book to make it easily readable, like a story.

 To facilitate learning, all items related to a given topic are included within a single chapter. Appropriate for entry-level as well as more experienced technicians and machinists, this text also provides opportunities for the reader to develop critical diagnostic and problem-solving skills.

This text is divided into four sections and is designed so that the student can begin working in the shop right away. Section 1 covers engine construction, disassembly, inspection, and parts ordering. Diagnosis techniques, both before and after disassembly, are covered in detail. Also included are repair procedures that can be performed while the engine is still in the vehicle. Tools and equipment procedures, as well as safety issues, are covered throughout. 

Section 2 deals with the breathing system. This includes the valvetrain and manifolds. Cylinder head repair, as well as camshafts and turbochargers, are also discussed in this section.

 Section 3 discusses the cylinder block assembly with a focus on lower-end repair procedures. The lubrication and cooling systems are also covered. Section 4 deals with final reassembly and starting the engine. 

Gaskets and miscellaneous repair procedures are covered in this section as well.This sixth edition of Automotive Engines has been updated and refined to reflect changes in the marketplace. The text has an updated two-color design with many new and updated photos and sketches.

 An emphasis on photos and art anticipates the needs of those with different learning styles and encourages student interest in reading the related text. Many previously grouped photos from earlier editions have been separated so individual captions are displayed directly beneath, making i easier for students to survey each chapter by looking at the photos and captions before reading the text.

 The design and engineering of the internal combustion engine is continuing to evolve, with high-performance sport compact cars becoming a larger share of the engine repair and enhancement market. Vehicle restoration also accounts for a substantial part of the industry. In response to reviewer comments, these and other areas have been addressed in this revision of the text.