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Unread 02-20-2007, 11:09 PM   #1
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Default Know More About Your Cold Air Intake

Hope it helps.

Cold Air Intake Research

Maximize your cold air intake's full potential by getting to know more about it.

Air intake systems are like a whiff of cold, fresh air. It invigorates the engine, just like what fresh air does to our own lungs. One feels energized and ready for the day's labors. The heart starts pumping, delivering fresh air to the cells and muscles, lowering their core temperature and the body responds correspondingly by increasing work.

Air intake systems are the lungs of our vehicles. Supplying cold, fresh and clean air to the engine block is its main function. Cold air lowers the engine temperature, increasing the car's power in the process. A continuous supply of fresh and clean air is constantly fed to the engine, bringing forth an enormous potential for maximum horsepower output. It also performs a secondary function: that is, altering the appearance of the engine bay and creating an attractive intake noise.

A Bit of History

Pioneered by the American automotive parts manufacturer K&N Engineering, cold air intakes burst out of the market in the late 1980s. The early versions of cold air intakes consisted of rotationally-molded plastic tubes and a conical, cotton gauze air filter. By the 1990s, various companies (such as Injen, Volant, Airaid and AEM) have entered the cold air intake market, allowing for more competition and quality products.

Mechanism

Air intakes are commonly called cold air intakes to differentiate them from various permutations. It operates on the principle of increasing the amount of oxygen available for combustion. Cold air intakes generally provide cooler air from the outside to the hot engine block. Other strategies include:

* increasing the diameter of the air intake, which increases airflow
* smoothing the intake's interior for the reduction of air resistance
* providing a more direct route for the air intake
* the length of the pipe can be tuned, providing the most airflow at certain revolutions per minute (RPM)
* using a more efficient air filter

Uses

Intake systems can take on many different styles and is made from plastic, metal, rubber (or silicone) or even composite materials (fiberglass, carbon fiber or Kevlar). These materials do not affect the kit's ability to deliver cold air because of the limited time the air takes to pass through it.

The most basic design replaces the factory airbox with a short metal or plastic conical air filter (called a Short Ram Air Intake). The power gained is actually variable, depending on the restrictions posed by the factory-installed airbox. The filter is placed directly inside the engine block.

The benefits of the air intake depends on the application intended. Power may be lost, while gained in others. The intake noise is usually increased, as the resonator (whose job is to reduce the noise) is replaced by the intake.

Better designed air intakes use heat shields that isolate the air filter from the heat of the engine compartment. Heat shields provide cooler air that comes from the front or sides of the engine bay. Sometimes, carbon fiber is used as piping instead of metal, thus lowering the weight and insulating the air from the engine's heat.

The most extreme cold air intake designs (sometimes called Complete Cold Air [CCA] intakes),course the air from outside the engine block, gathering the air from different sources, aside from the front of the engine. These include taking air from the wheel wells, front grill or from a hood scoop. The intake is placed in such a way that the car's forward motion pressurizes the air coming in, creating a "ram-air intake". But these intakes require other and additional modifications, such as body modifications or even replacement panels.

The best cold air intakes, however, are those customized to fit a particular and specific engine application, which can provide increased airflow at ambient temperatures and raising engine power at all engine speeds. Custom air intakes can be made using mandrel bent air intakes tubes and other aftermarket air filters.

Hydrolock

One potential risk when using a cold air intake is the phenomenon called “hydrolock”, specially when driving through the rain. According to the automotive site, MODsearch: “Normally you'd love to rip through puddles without thinking twice, but because your engine is now getting air from inside your bumper you have to be careful. If your engine manages to suck up any amount of water through the intake and into the engine you will probably have little to no horsepower left. In more extreme cases, the water brought into the engine through the intake can actually break connecting rods in the pistons, as water will not compress at all, unlike air. In other words, be careful."

If you have a cold air intake ad you are driving through the rain, it is then important to take the necessary precautions. Water may end up inside your engine. One way is to install a water shield in the intake. Another is not driving through the rain. As a solution, some cold air intake manufacturers have included a built in hydro-shield, a piece of plastic that prevents water from seeping inside the air filter.

More and more cold air intake manufacturers now make air bypass valves. This valve is an open filtered spacer that is sandwiched into the engine block between two connected pieces of the cold air intake assembly. Hydrolocking is prevented, as the air bypass valve provides an alternate route for the air to come in, eliminating the vacuum that sucks the water from a puddle in the process.

Assembly and Installation

Installing a cold air intake? You have to consult your owner's manual or a reputable car repair and maintenance manual or even go to the dealership or mechanic as the specifications of every specific car is different from the next.

With cold air intakes, the long life of your engine is guaranteed. Like our lungs, it is there to provide the engine with one of its vital life source, air.
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Unread 03-01-2007, 10:16 PM   #2
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Nice guide man, rep+
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Unread 03-24-2007, 01:34 AM   #3
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Attach some TEC's to some heatsinks inside the intake tube, and get some lower than ambient temp air... never thought about that did ya!!!?
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Unread 03-25-2007, 04:05 AM   #4
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Then you have to cool the TEC's
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Unread 04-02-2007, 11:14 AM   #5
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Quote:
Originally Posted by pbasil1 View Post
Attach some TEC's to some heatsinks inside the intake tube, and get some lower than ambient temp air... never thought about that did ya!!!?
Well thought out ~_~

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