Red oxide primer
Thread Starter
Burning Brakes
Joined: Jan 2010
Posts: 884
Likes: 84
From: New Boston, NH
Red oxide primer
I am in the process of preparing my 75 for paint, using the razor blade method to remove paint. Is it necessary to remove the red oxide primer in order to get to glass or can the factory primer be painted over so long as it is in good shape? This question isn't about whether or not it is best to go to the glass or not, just whether or not it is necessary. I appreciate any input you can give.
Bryan (BEJ)
Bryan (BEJ)
Melting Slicks
Joined: Mar 2006
Posts: 3,161
Likes: 239
From: Southern CALIFORNIA
I think the old primers are laquer base. and sometimes modern paint systems can react to it and may problems down the road. So thats usually the major issue
But if it is in decent shape. some people do paint over it with good results, the problems are usually reactions which cause the old finishes to fry up, or new sealer finsih not adhering well.
I would try to still remove as much as possible(to help adhesion) and lay down a really good epoxy sealer as a base. Usually it says something on the Tech sheet of how to prep for certain stuff. If the paint starts to fry up or activate something youll know it aint gonna work.
I would advise againt using the razor on the primer. its usually softer so it doesnt scrape off as easily. as the weathered topcoat. and youll just end up gouging the panels with the blade. i would sand it down. I used stripper on mine and sanding.
But if it is in decent shape. some people do paint over it with good results, the problems are usually reactions which cause the old finishes to fry up, or new sealer finsih not adhering well.
I would try to still remove as much as possible(to help adhesion) and lay down a really good epoxy sealer as a base. Usually it says something on the Tech sheet of how to prep for certain stuff. If the paint starts to fry up or activate something youll know it aint gonna work.
I would advise againt using the razor on the primer. its usually softer so it doesnt scrape off as easily. as the weathered topcoat. and youll just end up gouging the panels with the blade. i would sand it down. I used stripper on mine and sanding.
Thread Starter
Burning Brakes
Joined: Jan 2010
Posts: 884
Likes: 84
From: New Boston, NH
I think the old primers are laquer base. and sometimes modern paint systems can react to it and may problems down the road. So thats usually the major issue
But if it is in decent shape. some people do paint over it with good results, the problems are usually reactions which cause the old finishes to fry up, or new sealer finsih not adhering well.
I would try to still remove as much as possible(to help adhesion) and lay down a really good epoxy sealer as a base. Usually it says something on the Tech sheet of how to prep for certain stuff. If the paint starts to fry up or activate something youll know it aint gonna work.
I would advise againt using the razor on the primer. its usually softer so it doesnt scrape off as easily. as the weathered topcoat. and youll just end up gouging the panels with the blade. i would sand it down. I used stripper on mine and sanding.
But if it is in decent shape. some people do paint over it with good results, the problems are usually reactions which cause the old finishes to fry up, or new sealer finsih not adhering well.
I would try to still remove as much as possible(to help adhesion) and lay down a really good epoxy sealer as a base. Usually it says something on the Tech sheet of how to prep for certain stuff. If the paint starts to fry up or activate something youll know it aint gonna work.
I would advise againt using the razor on the primer. its usually softer so it doesnt scrape off as easily. as the weathered topcoat. and youll just end up gouging the panels with the blade. i would sand it down. I used stripper on mine and sanding.
Burning Brakes
Joined: Aug 2013
Posts: 1,071
Likes: 322
From: palm springs ca
I did exactly what you did with a razor and I sanded the red oxide and used epoxy primer over it. In the past I have used many different paints over the red without a problem. How did your finger nails hold up? got some paint under mine.
dom
dom
