Well since Minato used the ''death ripper seal'' (sorry if i didn't spell dat correctly) and would have died anyways, why didn't he just seal the whole of the Kyubi inside himself? -__-
A small baby like Naruto couldn't handle Kyubi's full chakra. He needed to split the yin of it over the yang before sealing it inside Naruto, since he wanted to give Naruto enough power to contradict with the masked guy's plans
To give Naruto the strength to protect the village and defeat Obito.
^^this.A small baby like Naruto couldn't handle Kyubi's full chakra. He needed to split the yin of it over the yang before sealing it inside Naruto, since he wanted to give Naruto enough power to contradict with the masked guy's plans