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>>I was working on clearing out an extra sidedraft manifold for my '63, until I found a few pinholes. What a pain:<< For some reason the heat risers on 32PHN manifolds seem to be unusually prone to clogging and rusting out. I once found one that was entirely rusted through--I mean still installed and all connections secure, but one area of the tubing was just...gone. I wonder if a ceramic exhaust coating would be a possibility as a way to extend the life of a solid manifold? Scott 62 343, 65 361 ------------------------------------------------ To unsubscribe, E-mail to: <type3-off@vwtype3.org> For more help, see http://vwtype3.org/list/