Top Bore x Stroke Bore is the measurement of the diameter of each cylinder, and stroke is the distance the piston travels one-way within the cylinder. By first determining the area of the cylinder and then multiplying that by the stroke, you can obtain the displacement for each cylinder. Top Coil Springs Coils springs form a part of the contemporary space-saving suspension system of the car. These are thick, coiled steel springs that carry the weight of the car. By varying the thickness and type of steel, different levels of comfort, handling and load-carrying ability can be provided.
Ratio refers to how much the fuel-air mixture in the cylinder needs to compressed before ignition.
The higher the compression ratio normally means greater power. A car fitted with a catalytic converter, necessarily needs to use unleaded fuel, since the lead in the fuel forms a film over the catalysts, damaging the converter and rendering it ineffective. While cornering the outer-wheels cover a larger distance and needs to turn faster than the inner wheels. The differential allows wheels on the same axle to turn at different rates. This is measured in cc or litres, and refers to the total volume of all the cylinders in the engine.