Originally Posted by
andyo
A lot of guys, myself included, have done what you are saying. I removed the loose coating, repaired the rot, cleaned the rust, then coated with POR15 gray coating. Then i painted the entire frame in Krylon smoke gray. It looked amazing and I'm sad that all the work i put into the frame cant be seen under the car....
POR15 is great stuff, a little tedious to work with, but the result is really good. I cant speak to its longevity of it myself as i just did mine last year, but i read others who said its been solid for many years.
On another note, blasting the original coating is going to eat up media in a hurry, and will also take a very long time. The coating that's still intact is tough stuff. If you plan to do that, i recommend heating and scrapping off as much of the old coating as possible beforehand.
-Andy