some of the imports come with a cross between a header, and a manifold. these are usually steel.
corrola, i think comes with a cast iron exhaust manifold. it is possible to weld it, but it is difficult. with the time and difficulty involved, it would be better and easier to install a new/used one.
Took a welding course many many years ago when I was 20.
Old time teacher back then taught us that when trying to weld cast to mild steel you were technically supposed to use Nyrod (sp?) But. In a pinch using stainless welding rods worked just as well. Course this was with stick welding.
I actually at the time put this to the test when somene from another shop gave me the head to a HD flathead engine that had this part at the top broken off where a bolt connected to it. Giving no promises I fabricated a peice out of mild steel and welded it in place using stainless rod. I dont know how long it held other then I know it did hold at least 2 years that way which was the last I remember hearing about it second hand.
I'd almost forgottenabout this till this thread. Teacher was a great but a bit kooky old coot with an ornery side to him. Was a welder in the 3rd army during WWII who didnt mind at all telling us stories about him literally crapping his pants when the shelling started.
That and always told us that "By the book is great when your in school. and I'll teach you by the book. But often in the real world you have to throw the &)#(#@ book out because there are times when its !(#*!#@ useless. Im gonna teach you what to do then too."
