Hello all; just wondering, if I were to make my own headers, what kind of steel is adequate for the flange material? Home Depot sells strip stock; I can get it in 3/16" thickness- can't imagine how to DRILL that, but- would it hold up to heat okay? I assume it's just regular strength steel; just wondering if it'd warp to hell.

Would regular 'ol exhaust pipe work for the primaries?

I can't buy a "weld your own headers" kit, because I have a v6.

I suppose I might be able to "drill" the flange by cutting it apart into sections, and welding it back together. Think that'd hold up okay to heat? My welder is a MIG, I use a C25 mix.

 

Most headers are made from standard mild steel. Home Debt flat stock is fine.
A hole saw and a drill press would be the best route for making the holes. A hand drill will work but is a bit more difficult.
Thin wall EMT condiut works pretty good for tubing and you can buy it pre-bent 90º. I believe Home Debt also carries these up to 2".
A 3" to 2½" reducer flange set work pretty good to tie the tubes together. It's just a matter of tacking and hammering to get it to conform to the tubing.
I did this for a friend when the manifold on his old crappy 4cyl GLX split in half (literally). Is was much easier than hunting one down and, it turned out pretty good for the hour I invested in making it. Last time I heard, it's still in service as a j-yard car somewhere in Colorado.

 

Cool! Thanks (yet again), Deadbird!!!

 

You could save some time & frustration by buying the flanges already made & welding on your tubes.

 

Do they even -have- those for the 2.8/3.1/3.4 v6?? (As I said before, I have a v6.) I didn't think any company would bother with making a flange for this motor...

 

so why are you you should be fine with mild steel