Increasing Engine Power

For many car enthusiasts, increased engine power is the most important thing when it comes to a race ready car. Engines power is rated in terms of horsepower (1 hp=746 watts). A typical stock car (“stock” refers to the car being completely unmodified) has anywhere from 90 to 350 horsepower. You can increase the power of a car by using one or more of the following principles:
1) Increase the Engine’s Displacement Value: Ways to do this include adding more cylinders or enlarging the size of the engine’s cylinder heads and pistons
2) Increase the Engine’s Speed: By increasing the engines speed, power is being created at a quicker pace, therefore more horsepower is being produced
3) Improve the Volumetric Efficiency of the Engine: This can be achieved by turbo charging, super charging, or through a more advanced fuel injection system. This method pretty much involves pumping more air into the vehicle’s cylinder heads, therefore increasing the reaction between the fuel and air mixture. This ultimately creates more power, without having to deal with fuel efficiency problems.
4) Increase the Air Density: This principle can also be achieved by using a performance turbo charger and intercooler. By increasing the air density, you put more oxygen into the engine, and the increased explosive reaction can add up to around 80% of the engine’s original power.