stock header welding/metal type

[blown okie]

gonna have the tubes welded on the outside of the flange on my stock headers for some extra durability insurance before i have them jet-hot coated .. was wondering what metal the headers are actually made of.. i think i've heard it mentioned they're made out of a low grade stainless.. is this true? or are they just a mild steel? any input is appreciated!

 

[NM Tom]

409 stainless...low grade stuff.

 

[Bruce Urie]

Make sure you have them TIG welded and that the guy knows what he's doing.

Bruce '87 Grand National

 

[QUIP'6']

gonna have the tubes welded on the outside of the flange on my stock headers for some extra durability insurance before i have them jet-hot coated .. was wondering what metal the headers are actually made of.. i think i've heard it mentioned they're made out of a low grade stainless.. is this true? or are they just a mild steel? any input is appreciated!

make sure they bolt it to a cylinder head when welding or it could warp. also put a triangular bridge between 3 and 5 cylinders that will keep it from cracking again

 

[blown okie]

already have a spare head to take with them and the welder knows what he's doing he is truly a wizard with a welder if you knew some of the stuff he's salvaged and fabbed up for me in the past including fixing my cracked ds header about 6 years ago and still holding..i may metion something to him about gusseting those tubes too

 

[Bruce Urie]

Sounds like you've got the right guy to do it. You are lucky. The gusset and head idea is a priority also. Glad the other guy mentioned it, I forgot. Let us know how you did. With your friend, it should come out top notch.

Bruce '87 Grand National

 

[Chuck Leeper]

We use silicon bronze rod/tig for outside support. Welds at lower temp, and is a bit "flexible".....