blasted naked coronet

[greenmachine]

question guys, Do I por15 everything that isn't smurf blue? package tray, inside of doors, basically anything that primed and wasnt walnut blasted. I know the porisity of the metal hasn't been tampered with, but it also isnt primed on every square inch, including engine bay, which will be body color of course. not sure why the painter didnt prime the engine bay. I plan on floors, from bottom of windshield to tail lights, roof, pillars, basically everything my gallon of por15 will cover and keep safe. then on to undercoating with Full metal jacket bed liner (supposed to be tougher than iron). thanks guys. Erik

 

[Donny]

As a former Por15 advocate, I can't recommend it, or other things unless the narrow parameters are met for its application. My reasoning I've stated in my thread Media Blasting, my two (or three) personal car threads, and perhaps other places. Por15 blasts off far easier than paint. This tells me it wasn't applied correctly, or, it's not as good as paint. Por15 has been marketed and sold as the miracle silver bullet rendering media blasting, and proper metal preparation(s) obsolete. I say this with first-hand knowledge. BUT...I also understand resources, and lack of them in different parts of the country and income levels we all negotiate through. So, best of luck to you in your Por15 adventure!

 

[hunt2elk]

I agree with Donny on the por15 not being the best product out there. It seems to adhere to rusted metal, but will peel off in sheets from clean metal. My opinion is that if you are restoring one of these cars, get rid of ALL the rust now. Spray everything with an epoxy primer and the your color. This will give you far better protection than por15. Just my .02

 

[greenmachine]

Thanks guys. Donny I planned on being very careful with application, I planned on sanding with 180 grit for bite, wipe down/vaccun, then metal ready, then por15 in a very clean garage. I have no rust on the car at all now, but the primer didnt prime the floors, roof, package tray, or engine bay. I guess I could pay up for mor dp60 and prime everything, but my paint in 650 a gallon and it seemed dumb to hide paint that expensive under carpet. I appreciate the info and if this seems like a bad plan, I will change it. Thanks. Erik

 

[BigBlock61]

Yes Por15 definitely needs something to stick to or it peels right off. Make sure your surfaces are clean. No grease or oil of any kind. I'm planning on roughing up and cleaning the insides of my frame rails and using it in there. I figure inside the frame rails cant hurt.

 

[SPAULDO]

X3 for me as well! Not impressed with how it adheres to the clean metal.

 

[Propwash]

X4.........Use Rust Bullet and you won't have to worry about it not sticking to bare metal...Just throwing it out there. These guys are right on the ball..just get rid of the rust if there is any! I use rust bullet, not over rust, but over fresh/cleaned metal as an extra barrier of protection. Tried the POR in the past in a pinch and did not like it at all. More runny, seemed to come off easy and like these guys mentioned, doesn't adhere to bare metal. That really doesn't say much for it's binding properties at all. If it needs a heavy porous abrasive surface like rust to stick, something's not right IMO. Clean up that metal, go buy more PPG DP40 (now is not the time to skimp), or Rust Bullet (not cheap either) and you don't have to worry about the POR15 goblins coming to visit you a few years down the road. Good luck.

 

[greenmachine]

After doing more research on the POR15 I have decided to not use it. I called the tech line to discuss prep and here is what I was told. "Sand with 40 grit, then use the marine clean (degreaser), then wash all of it off with a hose. then use metal ready and keep soaked with water for 20 min. then let dry for a day, then apply por15." Basically make my perfect floors rust to give something the por 15 can bite to. I have a an issue with spending the money to media blast my car, then make it rust, just to protect it from rust? I am primering and painting the entire car. Thanks for making me think twice on this. POR works great on rusty metal, but not on beautifull clean metal. Erik.