Part 1 Crack detection using dye penetrant. Because our cylinder head is aluminum we can't use the the first method that comes to mind for crack detection, Magnafluxing. Why you ask? Well I can't seem to find my aluminum magnet. Anyhoo, Crack detection with the dye penetrant is an easy 3 step process that can be done on any type of material, ferous or non. Step 1: on a clean cylinder head (or whatever you're crack detecting) apply a coating of the penetrating dye and let it sit for about 3 minut

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Dye Penetrant Inspection