I was wondering could a liquid coolant system be put on a yamaha blaster can it be done becuase i was thinking about boreing my engine and i dont what it over heat

 

One thing you should definitely do is run Full synthetic oil! My old Honda XR250 dirtbike ran hot until I ran the Honda HP4 20W50! The best you could probably do is see if there is an Aftermarket oil cooler. Your Blaster engine doesn't have the provisions for Liquid cooling....