By the nature of their design, cast manifolds are fairly rough internally ... To maintain flow the best option to weave exhaust pipes around components is the use of mandrel bends.

Even though most exhaust manifolds are made of cast iron or stainless ... while V-engines have two. Cracks in these components occur, especially in older vehicles that are already heavily worn.

It's worth considering a replacement of your exhaust manifold with a header to get the most out of these aftermarket parts. Why would an exhaust manifold prevent your car from going faster?

To start with, it consists of several vital components that perform various functions: Exhaust manifold. This component collects exhaust gases from each cylinder and transfers them into one pipe.

The exhaust manifold is one of those vital parts and is responsible for routing emissions and exhaust gasses from the engine to the exhaust tubing, catalytic converter(s), and -- in the case of ...

"Port matching of exhaust manifolds and headers is an old racer's trick and should be the first thing done before other exhaust components are installed. Any material on the header that restricts ...