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- An exhaust valve is a component found in the cylinder head of an internal combustion engine.
- Its main function is to let the spent gases out of the engine after the fuel and air mixture has been ignited in the cylinder.
- The exhaust valve is typically larger than the intake valve. The more air you can move in and out of the engine, the more efficient and powerful the engine will be. This is why the engine valve plays a critical role in an engine’s performance.
- The exhaust valve opens after the combustion stroke of the piston, and the piston forces the gases created from combustion from the combustion chamber into the exhaust manifold
- An exhaust valve is made in two parts and then welded together. The head is typically made from stainless steel, and the stem from high carbon steel.