Awts, headache. I would firstly say that the radiator is the culprit but since you changed it already, I think that's not the problem unless all radiator had leak already by chance but I think that is slim chance. What if, could it be that there is something hindering or clogged within the hose between the pump and radiator which as the water pump does its job and with that clog it created some pressure to the radiator until it given up? if there are big chunks contaminants in the water, I think it should as well ruin the impeller shaft.
This was the problem cbr radiator is too big thats why it is hitting the stock radiator mount when i hit a pud hole . So modified the mount so now it will never hit again ! Buhahaha! Seriously ... i never thought that the mount will do that ... do need to get another cbr radiator next month and a faito airfilter so engine can breath ... thank you for your help bro i really appreciate it . Cheers
Btw paps, a shop could give a hand to solder if the hole is small or even big instead of buying a new one.
Soldering is different paps.maybe epoxy cant handle the pressure and heat cause its constantly moving unlike our house job where epoxy just sits there.. They use torching together with sealing rod. Let us say like welding.