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Description
Donny's Unauthorized Technical Guide to Harley Davidson 1936 to Present: Volume II: Performancing the Twin CAMDonny 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
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.
Binding Type: Paperback
Publisher: iUniverse
Published: 12/24/2008
ISBN: 9780595527458
Pages: 740
Weight: 2.36lbs
Size: 9.10h x 6.06w x 1.74d
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4.6 ★★★★★
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★★★★★ 5
Buenas
Size: Large, Color: Dark Grey
Muy buenas para el sol
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Reviewed in the United States on March 29, 2026
★★★★★ 5
Soft and cozy fot
Fits well and is nice and cozy material look is as was needed for cos play uniform and fit was perfect the material is soft and is light weight for summer use for things without over heating and I am a big guy who over heats on a regular basis
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Reviewed in the United States on July 15, 2025
★★★★★ 5
Gals can wear this too!
Color: 2 Pack(black+white), Size: XX-Large
Do you know how difficult it is to find a cotton mock turtleneck??? This review is NOT for guys but for gals. Being in menopause my temps are all over the place-- one minute I'm hot then I'm freezing. I needed a short sleeve (plus size) cotton mock turtleneck to wear under a cardigan. I'm so pleased with this shirt... the fabric is soft, NOT see-through, it's breathable since its primarily cotton (95%), it's not super tight, and it's comfortable. Hopefully the info will help other gals looking for similar shirts.
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Reviewed in the United States on October 27, 2024
★★★★★ 5
Quality is great
Color: 2 Pack(black+wine Red), Size: Large
Very good shirts
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Reviewed in the United States on February 13, 2026
★★★★★ 4
Okay shirts if they fit. Neck stretches out some with washing.
Decent shirts. It's difficult to buy clothes online because you don't know how they'll fit until they arrive. The small was too small, and the medium is just a little loose. I'm 5'8" and 150 pounds after losing 65 pounds in a year. I work out and have some muscle. Shirts look good on my chest, but the sleeves are a little too long, and the neck is starting to go bacon after just two washings.
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Reviewed in the United States on November 8, 2025
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