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.