Cracked exhaust manifold

The best way to repair it is with an arc welder and nickle rod. Ive seen them brazed with a torch. But the arc welder does alot better job.

I would have to agree an Arc welder and nickel rod, grind a V in the crack and drill the ends of the crack, although I heat the item in my BBQ before welding (350-400 degrees) then let it cool slowly as the charcoal burns its self out. Yum Yum BBQ manifolds no sauce needed.