On a 2.4ohm head vaping at 4.8 volts you are just under 10 watts - which might burn some juices. I usually vape around 7/8 watts which, on a 2.4ohm coil would be around 4.4 volts.
It shouldn't hurt the coil in the clearo though, but it might make your juice taste funky. Also bear in mind that the higher the voltage, the less time the battery will last.
Finally, you can see a chart (that is really a massive generalization but a good place to start) that shows different ohms / voltage combos just by doing a quick google search for vaping chart.