liquid cooled blaster?

nope, where on your side case.. on the clutch side i think it is there are 2 holes with rubber plugs in them... ment for radiator hoses. you can convert it into a liquid cooled.. you use a head off a dt200.. or use buy this thing Yamaha Blaster High Performance Liquid Cooling Kit

all blasters are air cooled those hole are for the oil injection system that they come with so you dont have to premix but they tend to fail so most people take them off. that kit is to make it liquid cooled but its really still air cooled but with a lil help
 
there are 2 ports on the oil pump case that were casted for a water pump, i dont know of anyone that has installed one there though, but the kit your looking at seems interesting to me, i may have to try one some day, they give you an external pump, and a hella nice radiator too, i like it, and think it would be worth a try, back in the 90's there were ones called or by a company "cool head" i believe, but they seemed to fall away, but i've seen ones for the banshee's all along??? some temp readings before and after would be nice