1. The intake valve allows the air-fuel mixture to enter the combustion chamber. A larger valve ensures more mixture enters, boosting engine power and efficiency.
2. Exhaust gases are expelled after combustion. Since they’re pushed out by high-pressure forces, a smaller exhaust valve can still handle the job efficiently.
3. Exhaust valves face extreme heat. Smaller size helps manage this heat more effectively and allows room for stronger materials or cooling techniques.
4. Larger intake valves improve volumetric efficiency (how much air the engine can take in), directly impacting performance.
5. Engine designers balance valve sizes for durability, efficiency, and performance, making the intake valve larger is part of this fine-tuning.
In short: A bigger intake valve = better breathing, better power.
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