Donny's Unauthorized Technical Guide to Harley Davidson 1936 to Present
Volume II: Performancing the Twin Cam
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Donny is the Winner of the 2012 International Book Awards. Contents Chapter I The Platform for Performance Twin Cam Radical Design Change The Strength of the Twin Cam The Achille’s heel of the Twin Cam Twin Cam Performance Obstruction Stoichiometric Air Fuel Ratio Tendonitis The Weakness of Nostalgia Chapter II Repairing the Achilles Heel The Problem: Ovaling of Bearing Holes? The S&S Solution The Trick: Meet Emissions Dictates with more Power The H-D Solution The Andrews Solution Moment Arm Torsional Bearing Wear Knight Prowler (Silent) Advanced Belt Drive System Which Cylinder is Boss The Advantage Summary of Gear Drives over Timing Chains Gear Drive Installation Instructions 1999-2006 Hydraulic Lifter Limiter Kits Adjusting Performance Pushrods Chapter III H-D 110 Cubic Inch CVO The Symptom: Blowing Rear Head Gasket CVO 110-Cylinders and Liner Sleeves Why is just the Rear Head Gasket Blowing EPA Perfection: Stoichiometric Air Fuel Mixture The Problem is Oil Seepage not a Compression Leak The Causes The Band-Aids Redesign the CVO 110-Cylinders Performance Bonus of a Cooler Air Fuel Ratio CVO 110 Axtell Aftermarket Cylinders Boring and Honing Cylinders Engine Tuning Break-in Chapter IV Cams, Cams, Cams Cam Lift and Valve Lift High Lift Cam Lobe Interference Cam Duration Valve Overlap Cam Lobe Centerline Angle (LCA) Degreeing Cams Cam Lobe Separation Angle (LSA) Choosing a cam Valve Springs Radical Cam Profiles and Engine Longevity Chapter V Twin Cam Vibration The Primary Cause of Internal Vibration Flywheel Rim and Shaft Runout External Causes of Twin Cam Vibration Vibration Specific to Rubbermount Models Vibration Specific to Counterbalanced Softails Internal Cause of Vibration: Flywheel Runout Twin Cam Flywheel Support Bearing(s) Twin Cam Flywheel Misalignment Truing Flywheels Engine Balancing Balancing: Reciprocating and Rotating Weight Statically Balancing Flywheel Assemblies Dynamic Balancing External Aftermarket Vibration Dampeners Chapter VI Oil Coolers Detonation: The Great Engine Destroyer Octane: Engine Salvation Heat is the Savior Heat is the Enemy Lugging and Detonation Turbulation Balanced with Restriction is the Key Stoichiometric Air Fuel Ratio for Gasoline Oil Cooler Thermostats Practical Tips: Oil Cooler Installation Oil Pressure Drop, Wind, and Bench Flow Analysis Jagg Oil Cooler Installation Instructions Chapter VII Torque and Horsepower Torque and Horsepower Relationship Calculating Torque and Horsepower The Interrelationship between Torque, RPM, and Gearing Compression Equals Torque Horsepower is a Multiple of Torque and rpm Cam Timing Events and Cylinder Fill Overlap, Cam Lobe Centerline Angle and Valve Closing Delays Cylinder Pressure and Intake Valve Closing The Exhaust System, Cylinder Fill, and Torque Connecting Rod Ratios Why the TC96 is faster than the TC88 Power-to-weight and Weight-to-power Ratios Power Formulae Lies, Lies and Dynos The Worldwide Diversity of Horsepower Chapter VIII Eliminating the Performance Obstructions Key to Power: Head Flow Porting and Polishing Cutting the Valve Seat Valve Seat Fitment The Flow Bench Edelbrock Performer RPM Heads S&S Super Stock Performance Heads Screamin’ Eagle Performance Heads The Exhaust System Performance Exhausts Power Equals Breathing The Catalytic Converter Exhaust Pulses Backpressure Exhaust Pipe Sizing Chapter IX Fuel Delivery Ethanol Fuel Air Filtration and Power Velocity Stacks Cleaning Air Filters Performance Filters and Air Breathers Ram Flow Induction Systems Carburetion Ignitions Coordinating with Carburetion Intelligent Spark Technology Tuning the CV Carburetor Spark Plug Color Tuning Tuning the S&S Super E and G Carburetor Tuning the Mikuni Smoothbore Carburetor The Engine Management System Advance, Retard Ignition Timing EFI: Ideal Fuel Delivery Sensors Performance EFI Ignition and Fuel Modifiers Modifying the Electronic Control Module EFI Chips, Downloads, Burns Piggyback EFI Modifiers Output EFI Controllers Power Commander Screamin' Eagle Race Tuner and Direct Link EFI Modifier Technology Changes Fast Changing EFI Fuel Delivery without a Modifier Oxygen Sensors Chapter X The Power Train The Engine Compensating Sprocket Is the TC96 Gearing Too High? The Clutch How to Wreck a Clutch Finding a Difficult Neutral Speed Shifting Performance Clutches, springs, and Pressure Plates Gear Ratios Secondary Gear Ratios Final Drive Gear Ratios Internal Transmission Gear Ratios USA Overall Gear Ratios Performance Transmissions The BAKER 7-speed TC96 Transmission Comparing Six-speed Transmissions Evolving Rear Belts TC96 Primary Changes 6-Speed Transmission Noise IDS: Power Train Harmonic Pulse Dampener Cruise Drive Shift Clutches, Gear & Ring Dogs The Helical Gear S&S 6-Speed The BAKER F6F Helical Gear Conversion Chapter XI Performancing the TC88 and TC96 Twin Cams Power Gain: Cubic Inches and Air Flow Swept Volume Air equals Power Screamin’ Eagle Engines Performance Basics Building an Engine the Wrong Way Chapter XII Cubic Inches: Strokers and Big Bore Performance Connecting Rod to Stroke Ratios Measuring Average or Mean Piston Speed Piston Acceleration Speeds Engine Maximum Rpm Calculation Over-Square, Square and Under-Square Engines Big Bore Stroker Components EFI Performance Components Performance Sprocket Shaft Bearing Problem and Solution 124 Safe Cubic Inches Caveats for a Reliable Big-Inch Twin Cam Engine Big Inch Cam Clearancing Internal Engine Clearancing Top End Clearance Verification Big Inch Engine Breathing Tuning Big Inch Engines Warranty The Break-in Procedure Twin Cam Big Inch Crate Engines Chapter XIII Forced Induction Air is King Supercharging Roots Supercharger Twin-screw Supercharger Centrifugal Supercharger Supercharger Benefits Disadvantages of Superchargers Detonation Intercoolers Cams for Superchargers Turbocharging Turbocharger Cams EFI Twin Cam Turbocharger Choosing a Supercharger or Turbocharger Nitrous Oxide Dry, Wet, and Direct-Port Nitrous Delivery Power Tuning Nitous Engines Nitrous Oxide Cams Edelbrock Nitrous Systems for Harley-Davidson Chapter XIV The Future Say Goodbye to our Beloved V-Twin Willie G. Solution for the Radiator Generate more Power while cutting Emissions Lighter Harley’s The Throwaway Harley Catalytic Converters The Uncrashable Motorcycle The Aftermarket Response The S&S X-Wedge Chapter XV Twin Cam Performance Summary Researching Service Recalls for all Years Acronyms
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About the Book
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.
About the Author
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.