[SSCwannabe]

I'm fairly new at this but on some thread I read that paint sticks better to paint. Is this true, and if so how should i go about prepping a set of doors and rear hatch assuming no bw is needed and no priming is involved?

I'm thinking red or gray sb pad the usual cleanup, possibly some bulldog?

btw the body has been primered light gray and the color is chevy ppm 3 coats, the parts i mentioned are black so i'm thinking to get the color right all around i'll need to hit the parts with the same color primer... like is said i'm new at all this and this is the first entire car i've ever done

[Runnin'OnEmpty]

Was the rest of the car stripped to metal, or simple primed
over the original paint?

If it wasn't stripped, then I'd sand the doors and hatch with
400 paper, not scuff pad, and then prime. No need for Bulldog.

The primer will stick fine to well-sanded original paint. This
assumes the old paint isn't peeling or flaking anywhere.

[SSCwannabe]

that's what i was thinking... not stripped for the most part but for some reason the prior owner thought write me a ticket red should cover original ppm, gutters and most of the jams flaked off with nothing but my thumb nail down to the original finish, all the red elsewhere held up so it was a whole lotta wet sanding epoxy>2k>bcx3>ccx4
now i'm onto the doors and trunk and a close inspection of the driver side revealed some cracks in the fiberglass near the hinges hence the need for another door and someones got that and the other parts fs locally, i just wasn't sure if i should paint over paint OR go ahead and prime then paint

[Old Fool]

sand all the primer off, then put down a good epoxy primer.

[SSCwannabe]

old fool - the only metal item left is the hood which i will strip to bare everything else is a plastic/fg composite. On the shell the epoxy went over the red after it was bodyworked and prepped. The way the roof overlaps and the condition of the rockers, I decided not to strip down to bare. A couple of bad accidents by the previous owner and mileage notwithstanding, this one hasn't been our garage queen and probably never will be. The 11 yr old's got his eye on it anyway.

[nosehigh57]

what ever metal is on the car sand and epoxy.Give the normal flash time and spray a (what most people call high build)primer over entire car.This will give a nice even surface on it.Block out w/320 or 400 grit and paint.The different color primers will effect the amount of paint it will take to cover it.This will result in shade of the finish product if not carefull.

[SSCwannabe]

so far done the way you described except that i've been going slow between coats probably due to my skill level and taking my sweet time. with the light gray primer i had to go 3 coats 2 heavy just to get full coverage, if i had to shoot this color again i'd have the primer tinted - live and learn that's me