Marklaken, I'm completely unfamiliar with the part you are working on but I assume it's cast iron or else welding it would be no problem. There is a "miracle" stick welding electrode that very effectively welds any ferrous metal, even dissimilar ferous metals.
It is manufactured by Harris and is called "Super Missileweld". I know, a grandstanding name, but the stuff is really unbelievable and will even work with an AC buzzbox.
The stuff is pricey and pro welding shops keep it locked up because it makes such beautiful beads that everyone wants to use it because the bead appearance makes anyone look like a master welder.
