- Markshire PCs:
This is most certainly a joke post! No one! and I mean NO ONE!! would do this. It is not possible it port a manifold with sand and air flow!! You could hook a manifold on a flow bench and run sand through it for ten years and it would make a negligible difference. The only way to port( e.g. make the internal diameter or runner larger so it can flow more air) a manifold is to manually remove the material with a grinder, or a process called extrude honing. Extrude honing uses a heavy abrasive clay that is non-compressible, this is forced through the manifold at extreme pressures( thousands of PSI) and will remove the material very evenly, and leaves a smooth surface that is desirable for good air flow.