My 71 Interriod and body paint have been done over the last few years. I have the body ready for lift off. I know the old undercoat will have to be scraper off. Posibally using some heat for assistance. Its flaking off in areas and there is some light surface rust mostly in the transmission tunnel area where there is no undercoat there. I will be working on this while working on redoing the frame on the other side of my shop. What are my options that will last? Would it be ok just to remove all the old undercoat and surface rust then use a rust treatment, Then reundercoat with rubberized undercoat. Or do I have to sand blast it, Paint it then undercoat it ? This car is driven on nice days, at cruise in's and sunday drives, And after the 455 conversion, several trips to the track a year for fun. Any options would be appreciated and I would love to see any pictures of how you did yours. Thanks. I did find this for a start. http://v8buick.com/showthread.php?t=32370&highlight=remove+undercoat
Eastwood has a new product that might help: http://www.eastwood.com/under-gone-undercoating-remover-aerosol-17-oz-net.html Under Gone Undercoating Remover Aerosol 16 oz Item #31130Z Only $11.99 Now Only $7.99 Undercoat removal made easy! Here's the solution for undercoats that can be imprinted with a thumbnail. Biodegradable undercoat remover quickly loosens the bond of the undercoating to the base metal and allows you to easily scrape it loose. Use PRE Painting Prep to remove any remaining residue for a "paint ready" surface. Not for use on baked-on, epoxy or urethane undercoatings. For cleaning up an area to be welded, this is a must! 17 oz. net wt. aerosol. - Bill
I had no luck with the Undergone. Best results were by using heat. I used an adjustable torch on one of those small propane tanks for a portable grill. Use low setting. It will not take much heat at all. I then used a drill with one of those steel brushes. I tried the Undergone for a few minutes, then gave up on it. Tom
toluene will probably remove the undercoating or a least break the surface so that lacquer thinner can remove the rest of the gook. when i removed all the coatings from the inderside of my fender liners which had been sprayed with "rockhard", i initially used toluene and then had to use a propane torch and putty knives to get to bare metal. what a job!
