It may not be acceptable for keeping a car "pure", but for a practical repair, it is easy to braze. The brass really shows up against the cast iron. I have done extensive brazing on cast iron manifolds with good results. It can be done with a wire brush (to clean surface) an acetylene torch, brazing rod and flux. It is really quite easy and doesn't require any particular skill. I have done it to fabricate cheepo headers. I don't know how it will hold up in a really hot manifold but I never had a failure on MOPAR, GM and Renault in-line engines. I also split the manifold and brazed in a flange to make dual exhausts for my '38 Imperial straight eight. As a High School Kid, I didn't care about originality, but it sure sounded good with 2 1/2" pipes and glasspacks. 4 - Toes On Tue, 19 Mar 2002 17:59:58 -0600 (CST) dardal@xxxxxxxxxxxxxxx writes: > Can't these be welded as well? Cast iron is not easy to weld, but I > would > think that its possible, and it may be cheaper. Any suggestions? > > D^2 > > Quoting JOEHOLSOM@xxxxxxx: > > > My 65 convertible has developed an exhaust leak. I thought I would > be > > able to > > get by cheaply and replace the gasket between the manifold and the > > exhaust > > pipe.