Is there a difference between an exhaust manifold and a header?

Question

I think they are the same , but not sure.

Answer 1

They are not the same. An exhaust manifold is usually a thicker cast iron piece that runs all the exhaust pulses into the exhaust pipe as quickly as possible and inefficiently. A header is lighter and uses a series of tubes to separate the exhaust flow out of the head and combine them in a way that will greatly improve exhaust flow.

Answer 2

Hi there

In the strictist sense of the word, an exhaust manifold and a header do the same thing-----collect the exhaust from the engine.

Generally when one talks about an exhaust manifold, it is cast iron and is what was stock from the manufacturer. A header is usually formed or made from various grades of tubing, even stainless steel and are usually aftermarket and also made to enhance performance.

Answer 3

Headers help your engine breath and in the event that they are made wisely grant a siphoning effect on the exhaust gases hence becoming a intake vacuum allowing greater air and gas to be compelled into the cylinder. There are quite a few forms of headers, on a similar time as the greater much less high priced fashions do grant some reward their no longer made with the precision of the greater effectual greater high priced sequence headers. component you go with to seek for in high quality headers is to make confident each and each pipe for each cylinder is the right comparable length, if no longer this motives regulations, and how each and each is located into the creditors. additionally there are stepped headers that grant much greater reward giving you greater low end torque via becoming a lower back rigidity (smaller diameter on the top) and then stepping to a a million/4" greater pipe after the bends hence becoming an ever greater desirable siphoning effect. There are quite a few income to headers over production unit manifolds. i might propose you do a sprint learn on what might artwork superb to your application. once you're finding for upload'l HP high quality headers will relatively provide you that.

Answer 4

headers are usually about a 12%hp gain over manifolds.

Answer 5

an exhuast manifold has more restriction to flow where a header provides a single port for each cylinder. headers allow freer flow of exhaust, therefore more power.

Answer 6

Manifolds are usually cast, headers are tube..

Answer 7

Headers have much better exhaust flow,especially tuned headers. They carry the exhaust from the cylinders better, which gives you more horsepower.