Why do most engines have 4 valves per head?

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United Kingdom The workshop
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Published on ● Video Link: https://www.youtube.com/watch?v=7ODobOlbzRc


Duration: 10:01
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Are 4 valves better then any other number? Why are most engines fitted with 4 valves? We'll find out in this episode -

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Tags:
Engine
valves
16V