Subaru Outback Exhaust Gasket
About exhaust gasket
No exhaust gaskets are usually found on new cast iron heads, as the attached machined surfaces seal perfectly. During service, exhaust gaskets are used after the components are separated but replacement gaskets are made of asbestos or other perforated steel material. The funnel is considerably larger than the ear.
What is the purpose of exhaust gasket?
The gasket of exhaust manifold connects the exhaust manifold to the cylindrical nose. On V6 and V8 engines there are two exhaust manifold systems, and therefore two manifold gaskets are needed. A seal of the exhaust manifold gasket protects the connection between the manifold and the cylinder head. It prevents exhaust leakage from touching, and also ensures that all exhausts manage the catalytic converter. Flange and ring gaskets indicate other contact points in the exhaust system, such as between the exhaust pipe and exhaust manifold.
How exhaust gasket works?
The exhaust collector receives heated exhaust gases from the cylindrical head and creates pressure inside the collector. The metal gasket stretches to fill the small gap between the head of the cylinder and the nozzle, so that the rear pressure builds up without the exhaust device flowing air.
Where is exhaust gasket located?
These are fastened to the engine cylinders head(s) and covered with a gasket called the exhaust manifold gasket. The exhaust manifold gasket is usually a multi-layered gasket which contains metal and other materials designed to provide the best seal.