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Here are all the possible meanings and translations of the word headroom. Princeton's WordNet(0.00 / 0 votes)Rate this definition: headroom, headway, clearance(noun) vertical space available to allow easy passage under something. headroom, dynamic headroom(noun) the capacity of a system to reproduce loud sounds without distortion. headroom(Noun) the vertical clearance above someone's head, as in a tunnel, doorway etc. headroom(Noun) the ability of a system to reproduce loud sounds free of distortion; dynamic headroom.
what does port & polish head mean? Im enw to this stuff and I was wondering what Port & Polishing the Head means, and what it does, and if its good or not??? Porting is when you enlarge a chamber for more airflow usually. It is done using anything from a die grinder to a dremel depending on what you need to port. The idea is that stock head castings are very restrictive and do not allow for the actual amount of potential air to move through your cylinder head. Polishing is basically the process that happens after you Port the head.