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Exhaust Headers
Salam... yaar i just wana know that... How much Exhaust Headers Effect the performence of the car.. I want to install tham in my Cultus... Please give Suggestions as the mostly the company made headers come with 4 holes and cultus has only 3 exhaust holes commin out of the engin chamber...
Another Questions how Much Hp will Exhaust headers and Air Intake will add.. suggest me a Air Intake as well.. And any chances that it will work with CNG???
1 Answer
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Another Questions how Much Hp will Exhaust headers and Air Intake will add.. suggest me a Air Intake as well.. And any chances that it will work with CNG???
Gari.pk User 1914 asked on 23 Jun 2010 17:59:32 pm
1 Answer 
Zayan - on 23 Jun 2010 17:59:47 pmthis comes from one of my ealier posts in the technical section......
a header or the exhaust manifold basically comes in two designs....a 4-2-1 and a 4-1. Where 4 means 4 outlets (for a four cylinder car), 2 to 1 means that the four outlets merge to become two and ultimately end up in the form of a single collector which then connects to the exhaust.
In a typical four stroke engine, the engine produces most of its power during the power stroke. the petrol in the cylinder burns and expands..resulting in generation of power. The other three strokes are simply necessary evils and a drain on the engine.
The goal of headers is to make it easier for the engine to push exhaust gases out of the cylinders. During the exhaust stroke...a good way for an engine to channel out power is through back pressure. if there is any resistance, it will be difficult for these exhaust gases to get out easily resulting in more hard work for the pistons (as they will have to push against the pressure) resulting in loss of power.
in a stock manifold, there will always be a higher level of back pressure because all cylinders share the same outlet. an aftermarket header eliminates that by way of a 4-2-1 or a 4-1 design and providing each cylinder its own exhaust pipe.
i hope that answers your question. let me know if u need more info.
a header or the exhaust manifold basically comes in two designs....a 4-2-1 and a 4-1. Where 4 means 4 outlets (for a four cylinder car), 2 to 1 means that the four outlets merge to become two and ultimately end up in the form of a single collector which then connects to the exhaust.
In a typical four stroke engine, the engine produces most of its power during the power stroke. the petrol in the cylinder burns and expands..resulting in generation of power. The other three strokes are simply necessary evils and a drain on the engine.
The goal of headers is to make it easier for the engine to push exhaust gases out of the cylinders. During the exhaust stroke...a good way for an engine to channel out power is through back pressure. if there is any resistance, it will be difficult for these exhaust gases to get out easily resulting in more hard work for the pistons (as they will have to push against the pressure) resulting in loss of power.
in a stock manifold, there will always be a higher level of back pressure because all cylinders share the same outlet. an aftermarket header eliminates that by way of a 4-2-1 or a 4-1 design and providing each cylinder its own exhaust pipe.
i hope that answers your question. let me know if u need more info.
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