underhood black on top of red epoxy primer?

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    wibble puppy

    hiya! 😀

    i’ve had the brackets etc from my engine bay sandblasted and they were sprayed with red primer by the blasters.

    I want to spray them with Underhood Black. (I presume I’ll need to clean them with PRE first.)

    is it ok to put the underhood black over the primer like this?

    and do i need to key the primer as well as cleaning with PRE?


    cheers for any advice,

    juliet 🙂

    ps the primer is standard red oxide primer i think 🙂

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