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V-Twin Tuner's Handbook [Paperback]

D. William Denish


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Book Description

January 2000 Performance Pro Series
If you're building an engine, or if you do your own tuning, The V-Twin Tuner's Handbook, Volume One is loaded with in-depth theory, practical mathematics and tuning tips needed to maximize performance. Don't miss out on this difficult-to-find information. It's your ticket to a faster Harley-Davidson V-Twin.

The fastest racers don't win with guesswork. They plan their work and work their plan before they buy a single part or tighten a single bolt--and so should you. If you're building an engine or doing your own tuning, to be competitive you need a thorough understanding of the key power producing factors. And knowing how to calculate critical values will take the guess work out of engine modifications and tuning, saving you time and money. The V-Twin Tuner's Handbook, Volume One provides you the pro secrets needed to stay ahead of the competition.

Explained and illustrated are simple equations needed to optimize your V-Twin's performance. You'll find equations for calculating horsepower, torque, bore and stroke, displacements, compression ratios, airflow, gearing, shift points, cam specs, E.T., MPH, intake and exhaust tract tuning, tuning factors, and much more! Also presented are practical engine design theory and tuning secrets that will give you a deeper understanding of torque and horsepower, compression ratios, rod lengths, piston acceleration and speed, engine efficiency factors, airflow requirements, performance gearing, performance prediction, tuning for weather, aerodynamics, and vacuum and pressure. The book is also jam-packed with over 70 handy reference and conversion tables containing crankcase specifications, engine displacements, compression ratios, gear ratios, quarter mile speeds, flowbench airflow conversions, relative air densities, jetting corrections, gasoline densities, tuning tips, decimal to metric equivalents, and electrical systems, just to name a few. There's even a section devoted to timesaving conversion factors.

Eliminate the guesswork and maximize performance when planning, designing and building your engine, and tune your bike like the pros. The V-Twin Tuner's Handbook, Volume One is an essential resource for all street rodders, racers, engine builders, tuners and automotive enthusiasts, and the ideal companion to The Big Twin High-Performance Guide.


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Product Description

From the Author

The V-Twin Tuner's Handbook, Volume One is part of a three-volume set by Crystal Publications called the Performance Pro Series. Over 20 years ago my 86 ci Sportster was completely disassembled and meticulously packed away in storage boxes. After spending 18 long months building a custom house and encountering Murphy's Law on more than one occasion, I thought it was time to again have some fun and rebuild the 86 ci Sporty with contemporary performance parts. What I discovered was that I had lost touch with current performance technology and was rusty in the procedures for designing, building and tuning the engine and bike. At the time, I wished there was a book that could provide me the information needed to build an engine and bike that would run at the front of the pack. After much research and review of my notes, I finally broke the code and built what, at the time, was a very competitive hot street Sporty. The experience of not having a source of reliable and detailed performance information planted the seed to someday use my writing, marketing and computer technology skills along with my Harley engine building and racing skills to write a comprehensive book with useful information for Harley performance enthusiasts. Although that "someday" took 15 years to reach fruition, it resulted in my writing The Big Twin High-Performance Guide, Volume One, the first book in the Performance Pro Series.

To write a comprehensive performance book takes an in-depth knowledge and understanding of the needs of the high-performance enthusiast. Moreover, compiling useful, compelling, hard-to-find performance information is extremely time consuming and difficult. (This is why such information is often conspicuously absent from some manuals, and why one author of a performance book recently extensively plagiarized The Big Twin High-Performance Guide.)

The Performance Pro Series is jam-packed with hard-to-find power secrets including advanced theory and application that provide the Harley-Davidson enthusiast the best in high-performance information for the V-Twin. The Series includes The Big Twin High-Performance Guide, Volume One and The V-Twin Tuner's Handbook volumes one and two. The Big Twin High-Performance Guide is highly acclaimed by performance enthusiasts, racers, aftermarket companies and dealers worldwide and is considered by many the bible for Harley performance. Hopefully, the Performance Pro Series will provide you a deeper understanding of the internal combustion engine and save you much time in your performance endeavors, while helping you optimize your motorcycle's performance.

From the Inside Flap

Foreword: The inspiration for this book originated from my randomly written notes, some of which were scribed more than 30 years ago. The notes included detailed information handy for designing, building and tuning a vehicle. Since this type of information is essential for optimizing performance, I decided to organize and published it as a book in 1993. It quickly became highly sought after by novice performance enthusiasts for its hard-to-find detailed information and by successful racers as a source of valuable reference material.

This new edition of The V-Twin Tuner’s Handbook becomes volume one of a multi-volume set. It is extensively revised, updated and enhanced over previous editions. It is nearly three times as comprehensive as earlier versions and includes over 30,000 additional words, 90 more pages and 116 new photos and illustrations.

Much new material has been added to the topic of internal combustion engine principles and concepts. Many new mathematical equations have been added to Section 1. Several of the equations in Chapter 11, Quarter And Eighth Mile Performance, have been optimized for greater accuracy over a wider spectrum by Patrick Hale, who markets a complete line of performance software through his company Racing Systems Analysis operating out of Phoenix Arizona. Additionally, almost 20 new reference tables have been added to Section 2, including some for the new Twin Cam 88 engine.

To help put things in perspective, The V-Twin Tuner’s Handbook, Volume Two, a brand-new volume, picks up where this volume stops and includes 14 substantial chapters and several appendices. The book begins with several detailed chapters discussing the theory and practical application of engine design, since successful tuning starts with proper engine design. Six more chapters cover the intricacies of dyno tuning and how not to get duped. Five additional chapters explain the details of step-by-step trackside tuning. Also included is a chapter on dyno-tested engine combinations, an extensive glossary and, as a bonus, a comprehensive update of Twin Cam 88 performance capabilities.

The in-depth and concise engine building and tuning information contained herein is hard to find, not to mention difficult and time consuming to compile and document. For these reasons, you will find that information conspicuously absent from typical run-of-the-mill high-performance books. It is hoped, however, that all the hard work and long hours required to develop the following exhaustive information will provide you with a better understanding of the internal combustion engine in general, and the Harley-Davidson V-twin engine in specific.

You may be interested to know that I reference this book on a daily basis. I find it extremely handy, and it saves me much time in my work. Hopefully, it will save you much time in your performance endeavors, while helping you maximize your motorcycle’s or vehicle’s performance.


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