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On 4 Mar 98 at 6:09, John R. Jetty wrote: > has any one ever polished the inside of there manifold??? I want to try to > clean it up and seeing as I am just waiting on my Bankruptcy to get > finished ( singing the paper work Thursday being filed Friday ). > The inside of the manifold is s rough I think it would help immensely but > how do I do it ????? I have heard that a rough intake manifold promotes turbulence which is a good thing. It helps the fuel/air mixture to mix more thoroughly. It is still a good idea to take the sharp corners off the bends and do other things which promote better breathing. The exhaust manifold is a good thing to polish as this minimizes heat loss to the walls. Jim - ******************************* Jim Adney, jadney@vwtype3.org Madison, Wisconsin, USA *******************************