You’ve got questions. We’ve got the answers—Mondays, when the Summit Racing tech department tackles your automotive-related conundrums. This week, we’re discussing common causes of cams…

The 8 Most Common Causes of Camshaft Failure and How To Prevent Them
How do you calculate compression ratio? What’s the best way to figure out engine displacement? In the automotive mechanics world, there are formulas and conversions for measuring just about e…

13 Key Automotive Formulas You Should Know
Seasoned car guys can often identify cars at first sight. But how many of us can easily ID a vehicle’s rear axle? It’s a handy skill to have for sure — especially when you’re scou…

A Quick Guide to Identifying Common Rear Axles
We don’t want to be “that guy.” You know the one—the guy who constantly tells you how to do your job (or how “you’re not doing it right.”) So please think of this post as more of a public service m…

12 Common Car Detailing Mistakes—and Why You Should Avoid Them at All Costs!
After a few street bikes builds, Adam Perez decided to slow things down a little with his next project so he picked up a '99 Yamaha Roadstar to tinker with.

A Garage-Built 1999 Yamaha Vicla
Your spark plugs are like a cipher. And to read a cipher code, you usually need a cipher key. That’s what this is—a cipher key that is going to help you “read” your spark plugs and understand what …

A Guide to Reading Spark Plugs
Some folks are good with numbers. Some of us forget our own work phone extensions and occasionally blank on our PIN numbers at the bank machine. For the latter group, OnAllCylinders contributor Lor…

Firing Squad: A Graphic Guide to Common V8/V6 Engine Firing Orders
As the first member of his club to try his hand at bike building David Fuentes was under pressure his 2002 HD Softail came out as a masterpiece.

Building a 2002 HD Softail into the Ultimate Vicla
Intake manifold vacuum is a key indicator of engine performance. By measuring vacuum under different engine loads and conditions, you can track down problems within your engine and make the necessa…

Quick Guide to Vacuum Gauge Readings
Roadstar looking good in white Yamaha Motor USA #ThisisaYamaha
Blue beauty.
Blacked out beauty. Yamaha Motor USA #ThisisaYamaha
Simple is good. Yamaha Motor USA #ThisisaYamaha
Something Wicked this way comes. Yamaha Motor USA #ThisisaYamaha
Keeping it classy in Black and White. Yamaha Motor USA #ThisisaYamaha
Oh yes.
We could look at this for hours. #ThisisaYamaha Yamaha Motor USA