Hi-Temp adhesion problems

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  • #27827

    Coated a set of headers with the Silver hi-temp powder and three months later I’m seeing flaking in spots. It’s minimal near the exhaust port side but pretty severe down by the collectors.

    I media blasted the headers for prep and degreased with a heat cycle before powder application.

    A couple questions….
    1. What’s the best way to get the old powder off. Blasting or a Chemical remover ?
    2. Has anyone had the flaking problem on headers and do you know what the cause was ?

    3. Is the hi-temp powder not the best option for the headers and should I be applying a ceramic style coating ?

    Any guidance would be much appreciated !!

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