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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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★★★★★ 5
Love it!
Color: Red Buffalo Plaid, Size: Full/Queen
Instantly became my favorite comforter for winter months. Colors are vibrant and beautiful; soft and warm; appears to be durable. I would get another of it came in others colors. Paired with the Amazon Basics red buffalo plaid sheet set. Matches my pajamas and my dogs’ bandannas perfectly!
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Reviewed in the United States on December 1, 2025
★★★★★ 5
Comfortable and light
Team Name: Lightweight Comforter, Size: Twin, Color: Green
This comforter is nice and soft. I was looking for something lightweight and not too thick and this has been perfect as I get very hot during the night. Pretty color and low price too!
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Reviewed in the United States on May 7, 2026
★★★★★ 5
Nice material and super soft.
Team Name: Lightweight Comforter, Size: California King, Color: Dark Grey
Was leary of the price but honestly it's a really nice comforter. Not to heavy. Not to thin. Highly recommended this if you want a budget friendly comforter for your bed. Would buy again.
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Reviewed in the United States on May 10, 2026
★★★★★ 5
Great
Team Name: Lightweight Comforter, Size: Queen, Color: White
Great comforter. Soft and warm. Surprisingly comfortable.
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Reviewed in the United States on May 21, 2026
★★★★★ 4
If you need something warm
Team Name: Lightweight Comforter, Size: Oversized King, Color: Black
Not cooling at all. Very warm 365 days a year (I live in AZ) Use it as an extra layer of fluff on my bed rather then an actual blanket as its to warm for me. Very soft though. Washes well and holds its color. Priced well. Lightweight. Have had for sometime and isnt falling apart.
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Reviewed in the United States on November 19, 2025