I will start with a historical perspective. Cast iron has been used for countless applications for a couple centuries. It is also well known for cracking. There are people who can fix the cracks. This is a personal project where I am plugging a...
Fix the manifolds? Such as weld or braze the cast iron? I was always under the impression that repairing the cast iron was a tricky process. I've been successful in the past on water jackets that don't get as hot as an exhaust manifold- I don't...