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CUSTOM FAST CARS |
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Learn how
to modify your Engine |
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Home
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Engine
> Air Filters |
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Air
Filters |
Two main types of air filters are used in
automobiles: the combustion air filter, and the cabin air
filter. The combustion air filter prevents particulate matter
from entering the engine's combustion chambers. This filter is
commonly changed at oil-change time, but may be changed at
longer or shorter intervals, depending on operating conditions
of the vehicle.
Most modern, fuel-injected vehicles use a flat panel filter.
This filter is usually placed inside a plastic box connected to
the throttle body with a large hose. Occasionally these are
replaced with a conical filter and cold air intake which, in
most cases, includes a heat shield to protect the intake air
from under hood temperatures, along with tubing to improve
airflow into the throttle body. In many cases an improved
air-intake system can produce an increase in power and
efficiency.
Older vehicles that use carburetors or throttle body fuel
injection typically use a cylindrical air filter, usually a few
inches high and approximately a foot in diameter (the most
common version is 14 inches in diameter and 3 inches tall). This
is positioned above the carburetor or throttle body and secured
with a metal lid. Replacing this lid with a chrome-plated
version is a common and simple modification among car
enthusiasts.
The cabin air filter is typically a pleated-paper filter that is
placed in the "outside-air" intake for the vehicle's passenger
compartment. Some of these filters are rectangular and similar
in shape to the combustion air filter. Others, such as in the
Ford Taurus, are roughly triangular in shape, so as to fit in
the narrow curving space of the outside-air intake. Cabin air
filter replacement has recently become an opportunity for
increased billings and profits at professional oil-change
locations. Improper removal and reinstallation of this filter
can lead to water leaks (by misalignment of the water diverter
or seals) and in rare instances, a cracked windshield. This
filter is often overlooked and clogged or dirty cabin air
filters can significantly reduce airflow from the cabin vents,
as well as introduce allergens into the cabin air stream.
Periodic, proper replacement will increase cooling and heating
efficiency. A filter should be replaced annually to ensure
optimal efficiency. Drivers can change their own filters or have
the service done for them at an automotive service center. |
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| Tray Filter |
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Replacement Air Filters for Street Legal
Vehicles - K&N Replacement Air Filters are
designed to fit right into the standard OEM
motorcar air box. No modifications are required
by the owner, no jet changes or adjustment of
the carburetors is anticipated or suggested.
Customer modification of the standard air box -
removing the cover, drilling holes into the side
or top will have a drastic effect on smooth
carburetion. Modifications will cause the stock
system to run lean and reduce horsepower. Keep
your engine stock and the new K&N Replacement
Element will be good for the life of the engine. |
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| Pod Filter |
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Each kit is proven on a
rear-wheel dynamometer to increase horsepower
and torque. Typhoon intakes come in one of three
designs; cold air intakes (CA), short ram
intakes (SR), or complete cold air (CCA) intakes
which can be configured as either a cold air
intake or a short ram intake. Available in an
assortment of powder coated colors and polished
aluminum, these kits are sure to please in every
way. They come with an oversized High-Flow
conical air filter designed to provide increased
surface area and dust capacity. This extra
surface area provides even more airflow at lower
restriction than a standard K&N O/E replacement
filter that is limited to the size of the
factory air box. The oversize air filter also
captures more dirt increasing the service life
before a cleaning is required (up to 100,000
miles). |
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