THE FOUR STROKE DIRT BIKE ENGINE BUILDING HANDBOOK

 With the highly tuned state of the modern four-stroke dirt bike engine, correctly building a strong and reliable engine is becoming increasingly complicated. Unless you've been brought up in a world surrounded by engineers and engine building professionals, having the correct knowledge at your fingertips is nearly impossible.

​That's why we created this handbook for you. Brought to you by powertrain engineer, Paul Olesen, this book contains up-to-date professional knowledge and hands-on tips currently used in the industry.

The Four Stroke Dirt Bike Engine Building Handbook is the most comprehensive guide for dirt bike engine building available, whether you are working at home or as a professional in a shop. The process of building four-strokes to race engine quality is explained in-depth in this thoroughly illustrated handbook.

Containing 250 full color pictures, 300 pages of step-by-step instruction, and detailed technical knowledge that can be applied to any make and model, The Four Stroke Dirt Bike Engine Building Handbook is a trusted guide for any expert or beginner. 

JOIN THE 2500+ OTHER RIDERS WHO HAVE SUCCESSFULLY REBUILT THEIR FOUR-STROKES.

Order the Four Stroke Dirt Bike Engine Building Handbook

CHAPTERS INCLUDE:

  • When To Rebuild - a detailed list of the ways to diagnose whether your four stroke is due for a full rebuild, to help you understand the warning signs and symptoms your bike may be exhibiting.
  • Tests to Help Determine Engine Health - a comprehensive guide that takes you through how to perform a Leak Down Test as well as a Compression Test, complete with full color pictures and detailed instructions.
  • Leading Causes of Premature Engine Failure - a complete chapter dedicated to the factors that can cause an engine to fail prematurely and how to avoid them. 
  • What Should Be Replaced - a detailed guide on what components will be replaced when doing a full rebuild on a dirt bike engine. 
  • What Tools Do I Need - an in-depth overview on all the necessary tools to correctly teardown, inspect, and rebuild a four stroke dirt bike engine.
  • Precision Measurement Tools and How To Use Them - teaches you how to take accurate and repeatable measurements when building an engine. Covers the top ten precision measurement tools as well as how to read, calibrate, and use them during a build.
  • Workshop Environment - a full guide to creating a healthy and sustainable workshop environment when engine building.
  • Race Engine Build Considerations - a complete outline of the most common race/performance engine modifications detailing how performance parts affect power and reliability. Complete with tips on how to select performance parts based on your personal riding needs and what will yield the biggest gains for your money.
  • Full Teardown - a complete overview on correct teardown procedures for any four stroke make and model. Including how to remove the engine from the frame, tips and tricks for keeping track of all hardware and parts, how to properly remove components from the engine as to not damage gasket surfaces, important measurement and inspection points, how to correctly remove the flywheel and piston, and how to properly split the crankcases.
  • Complete Inspection, Replacement, and Assembly of Sub Assembly Components - a step-by-step thorough investigation of how to identify problematic wear patterns on old parts to help pinpoint causes of engine problems or failures. Also covered is how to correctly build up subassemblies including such components as the crankcases, transmission, crankshaft, cylinder, oil pump, kickstart, clutch, balance shaft, and cylinder head. In addition, procedures on how to improve or repair your engine components are covered. Examples include how to true crankshafts, hone cylinders, and repair damaged crankcases.
  • Reassembly - detailed instruction on how to correctly reassemble the engine and install it back into the frame. Race engine building techniques are also covered in detail and include timing the engine, checking the compression ratio, and checking piston to valve clearance. 
  • Engine Break In - covers the how and why behind breaking in a newly built engine and provides step-by-step instructions.
Diagnosing engine problems and picking up on subtle signs of wear can be frustrating if you don't know what to look for during a build. In this book we take you through key inspection points, explain why a part has worn or failed, provide examples, and give you a solution on how to fix the problem. You learn not only the correct way to rebuild your engine, but also the technical reasons why things are done the way they are in the engine building world. 
Whether you are a beginner or an expert, all techniques presented are guaranteed to increase your knowledge throughout your build. In addition, you learn valuable information not found in service manuals for building high performance racing engines, such as crankshaft truing, setting cam timing, checking the compression ratio, and checking piston to valve clearance.
Having this book will also prevent you from making the common mistakes that many at-home mechanics unknowingly suffer from when rebuilding. Reading and implementing the information in this book will make you a more educated builder, enable you to make informed decisions throughout your build, and keep you on track so you can build a powerful and reliable engine.

MEET THE AUTHOR

   Paul Olesen loves helping others learn more about their machines to ultimately enable them to work on their own bikes. After resigning from his position as a powertrain engineer at Erik Buell Racing, Paul felt there was a serious need to bring deeper awareness and education to the everyday motor head. By day, he's finding ways to put the power back into the rider's hands. By night, Paul is focusing on engine development, racing, and building his own race bikes.  
"I love engines and knowing all the intricate details which make them perform reliably in their highest state of tune. Building a great engine involves a keen eye to detail, thorough understanding of how components interact, knowing which tools to use when, and years of experience. I love knowing that my rebuild knowledge directly affects and improves my engine's performance. I want all at-home mechanics to feel that confidence and pride in their rebuild skills. That’s what this book is about. This book will teach four stroke dirt bike engine building best practices to any skill set.”  -Paul Olesen

THE FOUR STROKE DIRT BIKE ENGINE BUILDING HANDBOOK VALUE PACK

Order both the print and digital versions of the book at a fraction of the cost of purchasing both separate. Have an awesome reference by your side on your workbench and enjoy the pdf version when your project takes you to your electronic device.

THE FOUR STROKE DIRT BIKE ENGINE BUILDING HANDBOOK (PRINT BOOK)

Order the print book, an 8.5" x 11",  2.3lb book full of engine building knowledge. Full color pictures, thick pages, and high quality construction designed to withstand heavy shop use. Available to purchase through Amazon or directly from us. Did we mention it is nearly an inch thick?

THE FOUR STROKE DIRT BIKE ENGINE BUILDING HANDBOOK (EBOOK)

301 pages of engine building knowledge navigable by the click of a mouse. Search keywords, navigate using the clickable table of contents, and enjoy the book right on your computer, tablet, or mobile device.

BAT FOR BOTH TEAMS?

THE MEGA BUNDLE

BOTH EBOOKS AND BOTH PRINT BOOKS

Grab both the Four Stroke and Two Stroke Dirt Bike Engine Building Handbook in print and eBook format and save $34. For those who want access instantly, as well as having something to get their hands on while they work in the garage.

THE BUNDLE

​THE TWO STROKE AND FOUR STROKE HANDBOOKS IN PRINT

Grab both the Four Stroke and Two Stroke Dirt Bike Engine Building Handbook in print. ​Both books contain over 250 full-color pictures, 280+ pages of step-by-step instruction, and detailed technical knowledge that can be applied to any make and model. The Four and Two Stroke Dirt Bike Engine Building Handbooks are a trusted guide for any expert or beginner.

FREQUENTLY ASKED QUESTIONS

How big is the print book?
The print book is 8.5" x 11" and nearly an inch thick. It weights 2.3lbs. It is a hefty book filled full of engine building knowledge.
​
How much is shipping going to cost?
For one book:
Anywhere in the United States: $8
Canada: $34
United Kingdom: $44
Europe: $46
Australia: $43
New Zealand: $42
South Africa: $43
Latvia: $45

For the bundle of two books:
Anywhere in the United States: $11
Canada: $63
United Kingdom: $88
Europe: $88
Australia: $88
New Zealand: $88
South Africa: $94
Latvia: $91

Why does shipping cost so much?
It is a huge book! The book itself weighs 2.3lbs plus another 0.3lbs for the box and packing materials and we are nearly at 3lbs.

To be completely honest, this is the most affordable shipping available via USPS for international orders if you want your book to arrive in a timely manner. Having sold over 1000 books to overseas customers, it's worth the extra dollar to ensure your book will actually arrive.

How will my book arrive?
Your book will arrive shrink wrapped in a 12" x 9" x 4 3/4" box. We have experimented with padded envelopes and other options and the test shipments have been damaged using these methods.  So far, a box has been the only way to ensure you book does not arrive rolled up into a mailbox that is too small, or with damaged edges.

Will I receive a tracking number?
Absolutely, once your book ships it will be emailed to you.

What are guys saying that have used the 4T Handbook?
I'm proud to say that in the short time the book has been available over 2500 riders have read it and successfully rebuilt their engines! We have been sent hundreds of amazing testimonials. You can check out our reviews on Thumpertalk too!

I want to pay with Paypal but it wants me to pre-approve my account. What's this all about?
I have had a few customers ask about the Paypal pre-approval thing and to be completely honest I wasn't entirely sure what it was either. I inquired with my shopping cart host, Gumroad, and the Gumroad representative had the following to say regarding Paypal and pre-approval:

Steve replied:

I apologize for your customer’s alarm. That messaging is put in place by PayPal, not us, and as a result it seems fairly scary.
But this is what the messaging means:

If your customer:
1. Chooses to create a Gumroad account after their purchase
2. Chooses to save their payment information in their Gumroad account (at www.gumroad.com/settings/buyer_information), and
3. Chooses to buy a product again on Gumroad, while logged in

Then they would not have to login to PayPal again.

That’s it. Nothing devious or dastardly about it. It works the exact same was as when you buy a product on Amazon or Ebay. If you have an account on those platforms, you don’t have to enter your payment information every time. This is your everyday kind of online payment, it just has been presented in a very weird way by PayPal.

- Steve // Support@GR 

​
I'd like to place a bulk order (5+ books), can I get a discount on shipping? 
Please contact me at paul.olesen@diymotofix.com if you'd like to place a bulk order. That way I can work with you directly and get you a fair shipping price.

Can I order both the Four Stroke and Two Stroke Handbook and have them shipped together?
​Yes  you absolutely can. We offer a Bundle of the Two and Four Stroke Handbooks in print, as well as a Mega Bundle of both the print and eBook versions of the Two Stroke and Four Stroke Handbooks. Scroll back up to select those options for your shopping cart. Or Click here to check those options out.

THE FOUR STROKE DIRT BIKE ENGINE BUILDING HANDBOOK (PRINT BOOK)

Order the print book, an 8.5" x 11",  2.3lb book full of engine building knowledge. Full color pictures, thick pages, and high quality construction designed to withstand heavy shop use. Did we mention it is nearly an inch thick?​

WANT TO CHECK OUT MORE OF OUR DIRT BIKE BOOKS? CLICK HERE!