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What Can Changes In Valve Shim Size Tell You About Your Engine?

3/21/2016

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what changes in valve shim sizes tell you about your engine
In today's post I'm going to shift focus back to the engine and talk a little about valve technology. Valve technology and manufacturing techniques have changed substantially from the earlier days of engine development and I want to share with you some information about the current valve technology being implemented in your engines. I also want to discuss one way you can get a feel for how much life is left in your valves. Let’s get started.
The following excerpt is copied directly from my book, The Four Stroke Dirt Bike Engine Building Handbook. If you want to learn more helpful tips, which will bring your maintenance knowledge and engine building skills to the next level, I’d like to invite you to pick up a copy of my book by clicking here. Be sure to use the offer code rebuild2016 to get 15% off when ordering!

Alright, on to valves shim sizes.

The cylinder head assembly of most engines will wear out before it resorts to telling you it has had enough by catastrophically failing. Diagnosing these wear signs and knowing when it is time to replace components is the key to keeping the cylinder head assembly from failing. Due to the aggressive camshaft profiles, high compression ratios, and high RPMs required to make a lot of power, the valves and seats typically are the first parts to wear out within the cylinder head. Worn valves and seats will cause the engine to become difficult to start, have low compression, and have reduced power.


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Motorcycle Ice Tire Studding: Part Three

3/7/2016

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How to stud dirt bike tires for the ice
In my previous post with the help of Two Wheel Endeavor’s, Jarrett King, I successfully mounted my Mitas Ice Kings to my dirt bike rims. This week I’m going to stud my tires, with Jarrett’s help. We’ll be covering how to determine the number of screws you need, sharing Jarrett’s recommended process for studding, and providing tips and tricks to help ensure you have the best performing and longest lasting tires once they have been studded.

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    The Four Stroke Dirt Bike Engine Building Handbook

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