Reproduction EDP primer panels

[Rg500gamma]

Most listed panels state EDP Weld through primer.
This is also the case with bolt ons such as hoods and fenders.
Besides skuffing them and wiping/tack cloth do they actually need a primer coat ?

[Jason Banks]

Absolutely.

The coating on most of the panels I have used is pretty thin and of unknown quality, NOT like what you would get on a modern OEM panel. I would actually recommend removing as much of it as reasonably possible and starting from bare metal.

[LS short box]

I help at a body shop a couple days a week. On the aftermarket panels we scuff them with a red 3M scuff pad and yes they need a good 2K primer prior to any body work.

[jumpsoffrock]

I live in wimpy CA with wimpy weather, and I have left EDP coated patch panels outside in the elements for 3-7 years and the paint got a hazey or dull, but it didn't simply flake off and completely rust.

I'm not suggested to forgo basic prep, but it doesn't seem totally worthless.

[Rg500gamma]

Ok guys thanks. I will do the primer regardless.
Better be safe and have a better outcome.
I thought there was a chance of skipping the step
But going the lazy route would have bothered me with the chance of a poor job

[Rg500gamma]

1 last thing
I have heard of doing epoxy primer as a 1st coat
Then urethane for a 2nd coat being it will not clog up the during the sanding process

[hugger6933]

If you scuff the EDP with like 220 grit then do a couple coats of high build primer that is what I do on al the parts I change for newer cars and trucks. Now on aftermarket some parts the primer is not near as good and the OE of course take a little thinner on a rag and wipe it on the primer to see if it comes off on to the rag, if it does sand that crud off then do a 2 coats of epoxy then your high build. Jim