An engine has many types of gaskets. However, they all have one main purpose. Their common purpose is to maintain pressure inside the combustion chambers. An exhaust gasket like the Geo exhaust gasket is one of most important gasket in the engine. An exhaust gasket is a sheet of precisely machined metal that seals the exhaust manifold to the engine block. It prevents the premature escape of exhaust gases from the engine block. It assures that the exhaust gases are properly channeled to the exhaust pipes through the exhaust manifold. The exhaust manifold resembles a collection of pipes fused together. Its main purpose is to collect exhaust gases expelled by the individual combustion cylinders through the exhaust valves. The exhaust gasket secures the exhaust manifold to the engine block.
Exhaust valves open and close at particular timing in coordination with the pistons, sparkplugs and intake valves. The timing is precisely regulated by the rotation of the camshaft. The camshaft powers the valves. However, the camshaft derives its power from the crankshaft. To assure proper timing, the camshaft rotates at half the speed of the crankshaft. This is made possible because the wheel pulley of the crankshaft is half in diameter compared to the wheel pulley of the camshaft. Timing is important to assure that the pistons are at heir optimal positions. Timing is important in the efficient combustion of fuel. Timing is important to assure that compressed air/fuel mixture does not end up blending with exhaust gases.
However, timing cannot totally prevent the accidental blending of compressed air/fuel mixture and exhaust gases. This sometime happens when the exhaust gasket is not tightly sealed. If the exhaust gasket is not tightly sealed, exhaust gases will prematurely escape. Some of these gases might end up being sucked into the intake manifold. Consequently, exhaust gas will end up blending with the compressed fuel/air mixture. This is detrimental to combustion because it will reduce the intensity of combustion. Power will inevitably be lost. Fuel will not be completely burned, resulting to the formation of pollutants. The engine block will be a messy smoking contraption.
If the exhaust gasket is leaking, it also poses the danger of the exhaust gases seeping into the HVAC (heating, ventilation and air conditioning) system of the automobile. The exhaust gases might be inhaled by the passengers causing suffocation. Overheating is one of the causes of leaking or busted exhaust gasket. Overheating may cause the exhaust gasket to become deformed. Another cause is engine vibrations. Engine vibrations may cause the exhaust gasket to be loosed or displaced. You should immediately replace a busted exhaust gasket to prevent further complications. Parts Train offers high quality exhaust gaskets at very reasonable price.