This describes the setup pretty well. I have worked out that the carby is a type BC and have organised a rebuild kit for it. I am fitting a set of repro Fenton headers, hence the dismantling. I can now see that the little pipe actually was poked into a hole in the exhaust manifold, which means that gasses were leaking out around the pipe.
When I fit the headers, what would you recommend I do with this pipe? I live in the warmer area of Australia, summer temps can hit 48 degrees C, winter usually around 20.
Many thanks, Bob