Are You Interested In Hi Performance Camshafts For Your Vehicle?
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The purpose of changing factory engines to work with hi performance camshafts is to increase the horsepower. If you are considering changing stock parts of an engine for high performance ones, you must decide how far you want to go with the increase in power and how much performance in other areas you are willing to sacrifice.
Camshafts were used in ancient days to create movement in toys, to allow life size figurines to mystify kings and emperors, and to make idols seem alive. Most people are familiar with them as parts of an internal combustion engine, without realizing their history.
A camshaft is a spinning pole that opens and closes the intake and exhaust valves of an engine. On a four-cycle engine with a carburetor, the intake valves open to draw air and fuel into the cylinder, and close during the compression and combustion that produces power. The exhaust valves then must open to expel the used gases. A two-cycle engine works a little differently.
There are people who will want a more aggressive ride, however, and those who are interested primarily in racing. These are the ones who will modify their engines with high performance cams; they need to realize that other parts of the car will need to change as well. The engines can also be designed in the first place with high horsepower in mind.
In manufacturing a racing cam, heat treated steel is fashioned precisely to time the opening and closing of the valves to maximize horsepower. Today the use of computer design makes this process very accurate. The length of time the valves are open and the period when both intake and exhaust 'overlap' is called duration. A shorter duration is standard in factory engine design. Increasing the overlap will produce more horsepower at high RPM speeds.
There must be careful matching of many factors when changing the cam, which regulates the whole power plant. The compression ratios must be compatible with the duration and the fuel delivery system. Cylinders heads may need to be milled for more volume, and the height of the lift of the head adjusted. Fortunately, there is much customer support from performance parts manufacturers to help people match all the related factors.
In customizing a cam, the manufacturer will need to know the type of engine being built, such as for a dragster, a flat racer, or a muscle car. The engineering department will provide the proper degree of lift and cam angle for each type of engine. Too much duration can actually cause a loss of power at some speeds, and the wrong compression ratio can compromise starting, idling, fuel efficiency, and engine life.
For street performance, however, you may want acceleration and a quiet idle, as well as less wear and tear on the components for longer engine life. Knowing what is a priority will help you make the decisions about transmission style, compression and gear ratios, carburetor type, exhaust system specifications, timing, and tuning that will result in the performance you want. Compression teat gauge will be an indispensable tool if you are changing to a higher performance cam.
Hi performance camshafts can be used to build a powerful car, and can be used to increase horsepower in a modified stock car. Attention to every detail of the power plant will achieve either goal.
Article Source: Articlelogy.com
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