The intake valve is usually 35%-40% smaller than the exhaust valve.

Name: The intake valve is usually 35%-40% smaller than the exhaust valve.
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Question

Quizplus · Accepted Answer

The intake valve is usually larger than the exhaust valve because it needs to allow as much air/fuel mixture as possible into the combustion chamber for the engine to operate efficiently. The exhaust valve can be smaller since gases exiting the engine are under pressure and can be expelled through a smaller opening.

The Intake Valve Is Usually 35%-40% Smaller Than the Exhaust