Has anyone ever modified their SYM RV 180 to a 250? My friend has and he's been having all sorts of trouble with keeping the engine cool. It seems like the coolant system on those RV 180's are very touchy, they need an exact amount of coolant. If it's just a little too low, the engine over heats very easily. I figure if he had a bigger radiator, this wouldn't be such a big problem. So I'm wondering what radiator that's bigger would fit in there. I know on my Grand Dink 250, it has a much bigger radiator, but I'm not sure if it would fit in there. If it could fit in there, I'm not sure how hard it would be to hold it in place.
Anyone have any suggestions?