Ugly Duck wrote:
In most racing classes, the driveshaft must be painted white so it shows up should it fall out of the car for some reason. Porsche Cayenne blue probably won't pass inspection.
I think the wheels look much better in titanium, but I really hope you didn't take me seriously before!
This "winter" car is going to look better than any car I've owned up to date.
Edit - what do you do to kill rust, Craig? For instance - the underbody of a car, where everything's surface rusted. Do you apply (nitric?) acid, or just buff it as best you can? Then what? Just hit it with undercoat? What about body parts, like the seam between two panels? This all could maybe go in another thread...
Of course I took you seriously
no really. I wasn't all that happy with them that dark, but they were so much better than what I started with that I was temporarily pleased. Seeing them on the car with the fender left me a little
.
Killing rust - very deep topic. The situations you describe would require a few different procedures. I tend to buff with a wire cup first and remove the majority of the surface rust. Then it gets an acid treatment (usually phosphoric - Metal Ready) then I would coat everything with epoxy primer. It sticks to everything and in most military tests, out performs POR. Then I apply a top coat of some sort (left over urethane is preferred) - definitely has to be something with a hardener. Then undercoat and your good to go.
You have to be very careful with the metal ready as you have to neutralize it with water. That leaves you a nice coat of surface rust if you didn't get it coated long enough (wet for 1/2 hour) or get it everywhere. There are also many issues with prep after that process - I just shoot it once dry as doing anything else has ended up wrong.
Seams are more difficult. I first wire brush all the old seam sealer out (that's the hard part) and clean it up with dental picks or a torch (burns out pretty well). Then wire it again. If it is rusty (like on the 240), then I blasted it with my little spot blaster until the rust is gone. Then epoxy prime it, seam it again with a urethane sealer (really loving that stuff right now - Fusor 801) - apply tape to either side of the seam, tool the seam, then remove the tape in one even pull. I also use this on the back side of all weld areas.
Finally, where I use POR is where none of these things will work. There were some seams under the 240 that were not seam sealed, couldn't be wire brushed etc...so I soak them with POR. It bonds to the top of the rust, but still has to be clean. So I hit it with brake clean until clean and then coat it. If the metal is bare, it has to be treated with the metal ready (acid etched) or it won't stick.