I am nearing the point where I will be yanking my old cast iron original type
exhaust manifold off of my old motor to get it jet hot/powder coated. I have
the late model exhaust manifold with two holes for the down pipes and have had
the ports matched and smoothed for what I believe to be about as good as you
can get with the stock cast iron exhaust manifold.
I have seen on this site and in several of the "how to" books comments to the
effect that the stock 2 hole exhaust manifold is prettty good as it is. I have
also seen comments on this site about people having problems getting the
aftermarket headers to fit properly and the need to have them jet hot coated.
With the extra cost and fitting issues considered I am inclined to use the
stock exhaust manifold with free flow exhaust pipes thereafter but would like
to hear what those of you who have been there/done that have to say before I
begin this part of my rebuild project.
Mike Lunsford, 1970 TR 6
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