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Thread: 1200 Cylinders

  1. #1
    TDR's Avatar
    Join Date
    Nov 2009
    Melbourne, Australia

    1200 Cylinders

    While i am waiting on my new top end to come in i thought i would have a crack at cleaning up the exhaust ports on the 1200 pv cylinders, i know it looks like there are lines and dints but when feeling with finger it is very very smooth, it looks like this because what wheel i used to polish them. Will there be any performance gains by doing this?
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  2. #2
    krispaintballz's Avatar
    Join Date
    Sep 2007
    Kenosha, WI
    The more polished the less of a grasp carbon can get on the walls, thus making them a bit cleaner in the long run.

  3. #3
    TDR's Avatar
    Join Date
    Nov 2009
    Melbourne, Australia
    Thats a plus then thanks

  4. #4

    Join Date
    Jan 2006
    Texas City, Texas
    I think you will get a little better return on your effort when you take a hard look at your exhaust manifold gasket and match it with the cylinders. Some times they do not mate perfectly because the exhaust holes in the gaskets are a tad small. This makes them restrictive.
    You can tell if the exhaust ports do not match if you find carbon deposits around the exhaust holes in the gaskets.

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