Mild flanges to stainless pipe is fine. Just use 309L filler on them.

 

I thought that people used mild flanges because They don't warp as bad a stainless... And because Stainless Pwnz CNC machines...

 

stainless flanges warp when welding like crazy. also if you have ever seen a cnc cutting a stainless flange, it move so slow.... snaping endmills is lame and expensive

 

i can do stainless, what head is it for?

 

A20A3... T3 flange. But if what the other guys say is true, I think I'd rather go with mild flanges, as long as it won't crack down the road.

 

if you weld it bolted down to a flat surface and dont weld a lot at a time kinda like welding body panels it will be fine. every name brand manifold is stainless, just cause someone in their garage cant do it right doesnt mean it shouldnt be done

 

listen to phil

 

seriously? i welded for a known manifold maker, and i can tell you stainless warps like crazy.

yeah ppl do it but it is pointless and expencive. also like someone stated it can pull out studs or break bolt's. it can happen.

 

think he was addressing the warping issue with the flange

 

my stainless mani is warped like crazy. we have to mill the damn thing now.
oh well.