Harley Davidson Technical Guides

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Harley Davidson Technical Guides


Donny Petersen has written a series of technical guides for Harley-Davidson motorcycles. Each guide covers a range of model years. These books are quite difficult to find in your local book store, but we have dug through the thousands of titles available on amazon.com, and put links to these great books to help you get that hard to find Donny Petersen title.

Donny’s Unauthorized Technical Guide to Harley Davidson 1936-2008, Volume 1: The Twin Cam
Donny Petersen offers workable solutions for whatever ails your 1999 to present Harley-Davidson. Graphics, pictures, and charts guide the reader on a sure-footed journey to a thorough H-D Twin Cam understanding.

Petersen’s insight makes technical issues understandable even to the motorcycle novice. In easy-to-understand language, Donny examines what’s right, what’s wrong, what’s “just okay” about the Twin Cam power train.

This is the first volume of Petersen’s long-awaited Donny’s Unauthorized Technical Guide to Harley Davidson 1936-2008. This twelve-volume series by the dean of motorcycle technology will examine the theory, design, and practical aspects of his subject. Donny has studied privately with Harley-Davidson engineers, plus, he’s worked on Harleys for over 35 years, having founded Toronto’s Heavy Duty Cycles in 1974, North America’s premier motorcycle shop.

Having ridden hundreds of H-D Flatheads, Knuckleheads, Pans, Shovels, Evos, and Twin Cams across four continents-doing all of his own roadside repairs-Donny has acquired the practical knowledge what lets him share street-wise tips, as well as walk you through detailed service procedures like porting and polishing cylinder heads to performing simple maintenance like oil changes. Donny Petersen is honored to share the wealth of his motorcycle knowledge and technical expertise.

Donny’s Unauthorized Technical Guide to Harley Davidson 1936 to Present: Volume II: Performancing the Twin CAM

Donny Petersen offers the real deal in performancing your Harley-Davidson Twin Cam. Graphics, pictures, and charts guide the reader on a sure-footed journey to a thorough H-D Twin Cam performance understanding. Petersen’s insight makes technical issues understandable even for the novice. Donny simply explains what unfailingly works in performancing the Twin Cam.

This is the second volume of Petersen’s long-awaited Donny’s Unauthorized Technical Guide to Harley Davidson 1936 to Present. This twelve-volume series by the dean of motorcycle technology examines the theory, design, and practical aspects of Twin Cam performance. Donny studied privately with Harley-Davidson engineers, having worked on Harleys for over 35 years. He founded Toronto’s Heavy Duty Cycles in 1974, North America’s premier motorcycle shop.

Donny has ridden hundreds of performanced Shovels, Evos, and Twin Cams across four continents doing all of his own roadside repairs. He has acquired his practical knowledge the hard way. Donny has the privilege of sharing his performance secrets the easy way. Donny will walk you through detailed performancing procedures like headwork, turbo-supercharging, nitrous, big-inch Harleys and completing simple hop-up procedures like air breathers, exhausts, and ignition modifications.

Donny Petersen offers workable solutions for whatever ails your 1999-to present Harley-Davidson. Graphics, pictures, and charts guide the reader on a sure-footed journey to a thorough understanding of the H-D Twin Cam.

Petersen’s insight makes technical issues understandable-even for the motorcycle novice. In easy-to-understand language, he examines what’s right, what’s wrong, and what’s “just okay” about the Twin Cam power train.

Volume I: The Twin Cam is the updated first volume of Petersen’s long-awaited Donny’s Unauthorized Technical Guide to Harley-Davidson, 1936 to Present series. This twelve-volume series by the dean of motorcycle technology examines the theory, design, and practical aspects of all things Harley-Davidson.

Technical Guide Volume I

Having ridden hundreds of H-D Flatheads, Knuckleheads, Pans, Shovels, Evos, and Twin Cams across four continents-and doing all of his own roadside repairs-he has acquired a wealth of firsthand practical knowledge that he now shares. He dispenses streetwise tips and walks readers through detailed service procedures-including everything from porting and polishing cylinder heads to performing simple maintenance, like oil changes.


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