F.A.Q about cars, the MOST commonly asked questions

Why is it that both our car engines are the same size (e.g 1.6litres), but his engine produces so much more power?

There are many reasons for variations in power, despite having the same engine capacity, some engines have better management systems. Higher compression ratios usually mean more power, the degree of lift in the camshafts also create variations of power. Generally speaking, a higher-rev band will result in more power because more air and petrol can be fed into the engine.

Why is it that although I have more horsepower, he can overtake me on high speeds?

Horsepower and top-speed are not closely related. Horsepower generally refers to how fast you can accelerate. Top speed depends on how big the engine capacity. The bigger the engine, the higher the top speed.

What is turbo lag?

All forced induction systems have turbo lag. Extra air and petrol is fed into the combustion chamber which creates bigger combustion and therefore, generates more power. Once it has reached its peak, the process needs to be repeated. This is known as turbo lag. The turbine also needs to be spun in order to generate electricy to power the air-compressor, therefore, there will always be a slight delay when you floor the accelerator.

What is that sharp sound everytime a turbo car changes gear

That is hot air being expelled from the car as a result of forced induction. It is expelled through a blow-out valve, which results in a sharp piercing sound.

Is it possible to make my car faster by installing a turbo kit?

In theory, as long as there is enough space in the engine bay, a turbocharger can be fixed in. However, other components such as the gearbox, suspension and pistons may be unable to cope with the extra power. So...in addition to installing a turbo, many other components need to be changed which makes it abit too expensive for some.

Why do convertible cars weigh more than conventional cars?

On first impression, chopping off a heavy metal roof should make the car lighter. Techinally, this is true. However, the chasis becomes more unstable and becomes more flexy beause of the sudden lack of bracing. Strengthening beams then have to be installed to give the chasis more rigidity. This makes the car deceptively heavier.

Is a 1.4 litre car more ecnomical than a 1.6 litre car?

Singaporeans take note, this is always true. Although you can save petrol by regulating the way you drive, there are still physical boundaries. The weight of the car play a part in how economical a car is. A 1.4 litre car may be heavier than a 1.6 litre car and you may have to depress the gas pedal alot more, to get the car moving. A 1.6litre car, CAN achieve better mileage.