Donny's Unauthorized Technical Guide to Harley Davidson 1936 to Present: Volume Ii: Performancing the Twin Cam

Donny Petersen

dhj 2008 · iUniverse

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Donny is the Winner of the 2012 International Book Awards. 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 feels honored to share the wealth of his motorcycle knowledge and technical expertise.

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Donny is the Winner of the 2012 International Book Awards. Donny established and has operated Heavy Duty Cycles in Toronto, Canada, since 1974; his monthly column “Techline” has appeared in American Iron Magazine since 1992. Instructed privately by Harley-Davidson engineers, Donny has taught mechanics, designed tech-school curricula, and authored student-licensing examinations. 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 first hand 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. A Toronto resident, Petersen now writes his 12-volume technical encyclopedia. Donny enjoys riding, mountain trekking, boxing, and diving.