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Thread: More "Old Hat"

  1. #1
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    Default More "Old Hat"





    Setting up the tooling to do the counterbore ... First was to calibrate the mic ....



    Dialed in the mic for the size of the I.D. cut .. ^^





    Both blades was zeroed to have the same cut ... ^^



    Set-up is a bit time consuming ...



    Almost ready to make some chips fly ...







    Head is in the oven and getting warmed up for installing the seat ... ^^



    Froze the seat ring using CO2 ...



    Slammed the seat home .... ^^



    Ready to cut in a valve seat ....

    And that's how an Old Redneck Hillbilly does it ...

    Last edited by Dragstews; 07-23-2020 at 4:54 PM.

  2. #2
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    So good!

  3. #3
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    I see a seat down in there somewhere ... !!

    Just need to whittle it out ...

  4. #4
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    So the factory HD bronze seats were straight?
    I believe the Triumph pre-unit 8-bolt heads had tapered seats that were cast in, like an inverted cone...tapered to the back end so they could not fallout.

  5. #5
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    Not straight .... Very similar to how Triumph did their casted-in seats ....



    I know there a seat down in there ... !!

    .025" away from min valve protrusion ....
    Last edited by Dragstews; 07-25-2020 at 3:12 PM.

  6. #6
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    Bien jale............

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