Would a 4.0motor from 2000 explorer work in my 2002 explorer 4.0 be compatable on 2002 Ford Explorer

What is the reason these 4.0 v6 motors break timing chains . What's the main reason this happens cause I jus replaced motor6months ago and timing chains are slappn again please tell me what the deal is

Asked by for the 2002 Ford Explorer
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need to make sure it is a over head cam engine and not an overhead valve engine as they are different and ford used both.