The two myths are rather different, so I do not think a Titanomachia really exists in Norse myths. There is the battle with Ymir, but not a full scale Titanomachia.
Personally, I happily take great liberties and fashion my own myths/history. My current saga's backstory is heavily based on a titanomachia between nine jotun/titans, each representing a Form and the eight major Olympian gods, with lots of totally made up stories. For example: at some point, the faerie living-god Horus sacrificed the first-born of Egypt, mummiying them with Infernally-wrought oils and entombing them beneath the Great Pyramid. As their spirits traveled to Hel, the Infernal oils smeared onto its gates, creating an Infernal regio that shut the realm of the dead (Hel) from the mundane world, effectively imprisoning the jotun Hel/Heaven, along with Fenrir/Typhon, and Freya/Gaia (who were lured there by Orpheus). So, yeah, not very faithful to the old myths 