I understand that CC’s = mL’s, but CC’s is something that I have always associated with the medical field.. so how did motorcycles get roped into that? Is it just easier to say “I have a 250cc dirt bike” rather than saying “250mL?”
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Cubic centimetres would have been the original unit for describing engine displacement volume. When engines have gotten bigger it’s eventually become easier to describe their size in a larger denomination, but hardly anyone says cubic decimetres, so litres it is.
At first it had logical reason and now tradition.
Cc was used by companies which manufactured while vehicle from chasis to engine. It was logical to keep units same so it was easier to see and understand dimensions. Later on many car producer outsourced engines to other companies, thus they no longer need to bother which each measurments only with final engine dimention. From this starts switch to liters as it was more sound for consumers. Every one knows how much litre is and its confucing how much 1000 cubic santimeters for general auditory.
Bike engines are much less formalised and outsoursing happend much later (and for many never happened at all) , so CC sticked as traditional measurment.
You find it weird because you are american. In the rest of the world we use metric for everything so cc (cm^3) is the default measurement of volume anywhere, not just medical. Cars engines are also measured in cc. My car is not a 1.8L, it’s a 1800cc.
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