I weld but will not claim to be a welder. I just watched a video of a professional fabricator weld a cast dual on a oem cast exhaust with a mig and regular 70s steel wire. The cast was heated to red hot them migged before it lost the red.

I have heard of heating before using a nickle type stick rod or using a cast iron stick rod -- but not a mig with hss. Probably not unheard by most of you.


https://www.hotrod.com/articles/195...-cylinder-exhaust-manifolds-the-old-way/

Last edited by 42465967; 10/30/2018 7:07 PM. Reason: link

1959 GMC 100 Fleet
Follow in the DITY