Quote:
Originally Posted by gedaggett
Every machine shop guy and tech I have ever talked to including my father who has 35 years experience as a mechanic. Heat up some aluminum and tell me if it doesn't expand. Since it expands (swells) it will constrict inside a hole.
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I have more than 35 years experience and aluminum does expand when heated. Aluminum housing are heated when bearings are pressed in or out. Sometimes a manufacturer specifies heating the head to remove or install valve guides. Your information is incorrect.