Tech Articles

The Straight Scoop: Exploring the Science Behind Hood Scoop Design

[portfolio_slideshow id=44735] Back in the day, “real” race cars didn’t have hood scoops. Instead they had an array of open injector stacks poking through the hood top. Scoops were superfluous. But then, Super Stock quickly became the rage. With racers struggling to find tenths (or even hundredths) of seconds, fresh air induction suddenly became important.

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Tire Math: Calculating the Effects of Tire Diameter on Final Drive Ratio

Thinking about changing the size of your tires? You’re not alone—people run larger wheels and tires for aesthetic purposes. We’ve also seen guys reduce the overall size of their tires for various reasons. However, there are some serious consequences to any changes to tire diameter. Tire diameter, along with rear-axle gearing, plays a role in the

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16-Volt Guide: 6 Things You Should Know About 16-Volt Batteries

For some racers, 12 volts just aren’t enough. Many drag racers and circle track racers have opted to run 16-volt batteries to give their ignition system and other components a boost. The extra voltage from these batteries creates a hotter spark, allowing you to run a larger spark plug gap and even jet up your carburetor. Combine

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7 Common Paint Mistakes—and How to Avoid (or Fix) Them!

Some people have no qualms about tearing into an engine. Others can practically rebuild a transmission in their sleep. Yet, many of these same people are intimidated by doing their own paint job. Maybe it’s the thought of doing inadequate prep work…the fear of mixing the materials improperly…or just the lack of patience to put in the necessary time. Most

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Intercooler Guide (Part 1): Air-to-Air vs. Liquid-to-Air Intercoolers–and Which is Right for You

Turbochargers are somewhat of a glamour product. They make big power and, along with superchargers and nitrous, are considered part of the holy triumvirate of automotive power adders. Turbos are not only common aftermarket parts, they’re also trusted pieces in many production engines, including today’s increasingly popular diesel engines. The intercooler is an essential part of the turbocharger setup. An

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Video 101: Oil Pump Pressure vs. Flow

One of the biggest misconceptions about oil pumps centers around oil pressure. As this video from Melling explains, oil pumps don’t produce oil pressure. They flow a particular volume of oil, which is then regulated by a valve within the pump. This valve determines the maximum oil pressure the pump can deliver. Oil pressure is

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Electric Fan 4-1-1: Everything You Need to Know About Electric Fans

[portfolio_slideshow id=43546] The heat generated from stop-and-go-driving, racing, and towing can kill engines. A well-designed electric cooling fan is critical to prevent engine overheating—a good fan will provide the airflow needed to dissipate excess engine heat with the least impact on horsepower and fuel economy. Without airflow, a radiator is not much more than a

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