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Four-Stroke Motocross and Off-Road Performance Handbook

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If you're looking for a comprehensive guide that will allow you to extract the most performance out of your motocrosser, the Four-Stroke Motocross and Off-Road Performance Handbook is the manual you've been waiting for.

From how to modify your bike's suspension to how to tune the engine for more power, this guide written by expert tuner and journalist Eric Gorr and motorcycle guru Kevin Cameron, will give you the inside line to a more powerful and better performing off-road bike.

Book Excerpt: Four-Stroke Motocross and Off-Road Performance Handbook


TIME: 30 MINUTES (or a couple of hours if air-drying a filter)

TOOLS: Sockets, ratchet, stand, clean rags, compressed air

PARTS: Air filter cleaner, air filter oil

Dirt and sand are major killers when it comes to dirtbike engines. That's why we put those great, big foam filters inside the airbox. However, there's another thing that dirt and sand kill over time: performance.

Keeping your filter clean will help your engine produce maximum power with the smoothest delivery. Trying to suck air through a clogged filter will reduce your gas mileage, drop your horsepower significantly, and make your engine feel soggy.

Why skimp on an easy chore, one that takes only half hour — mostly waiting for the filter to dry — when the benefits are so great?

When it comes to cleaning filters, there are two schools of thought. One uses a solvent that you dip the filter in to cut the filter oil and float out the crud. The other (shown here) uses spray-on solvent. Although each method has its supporters, each method is equally valid. The same goes for spraying on or pouring on new filter oil.

Most importantly, do not use gasoline or other solvents that are not specifically designed to clean air filters or you risk damaging the filter by degrading the glue used to hold multipart filters together. Similarly, you can actually swell the filter material, making the filter holes larger and less effective at stopping dirt.

Simply out, use hte right products for the job.

  • Basic Maintenance
  • Fit the Bike to You
  • The Intake System
  • The Exhaust System
  • The Electrical System
  • The Drivetrain
  • The Wheels and Tires
  • The Brakes
  • The Suspension
  • The Cooling System
  • The Basic Principles of Four-Stroke Engines
  • The Four-Stroke Engine
  • Accessories
  • Index

Subject: Four-Stroke Motocross and Off-Road Performance Handbook. Basic maintenance to high-performance modifications. ISBN-10: 0760340005 | ISBN-13: 9780760340004

  • Publisher: Motorbooks
  • Author: Eric Gorr and Kevin Cameron
  • Pages: 160 - Over 300 color photos
  • Binding: Paperback - 8.5 x 11 inches
  • ISBN: 978-0-7603-4000-4
  • Four-Stroke Motocross and Off-Road Performance Handbook