What is the best way to prep e-coated parts? Options

[doug_b_928]

I'm epoxy priming everything. But I see that e-coated parts don't need to be primed. However, some say that the part will match better if it is blasted and epoxy primed. What's the recommended procedure for e-coated parts (in his case the Dansk battery support and tray).

[jmitro]

the only reason the color coat would not match is if the primer is different colors or shades.
for me personally, I blasted the battery tray/support and then primed with the same primer the rest of the engine bay was painted in.

epoxy primer is just about the most durable primer and has good bare metal adhesion; I don't know how it compares to e-coat.

in regards to epoxy primer and body filler, what I've read is that depends on what body filler you use. Most are supposed to be applied to bare metal, or at least to a very scuffed primer; otherwise it won't stick well.