Thanks for the info. My plan for the rust was to go over it with my grinder to get rid of most of it, and then using POR15 to cover up the floor. Is rust mort/rust encapsulator better? I have no experience with these types of products. I don't want to have to deal with this rust again, so I want to use something that will work (short of cutting out the rust and welding in new metal, since the metal is still good). As for the bolts, I expect that at least one or two of them will break when I try to remove them (at least that is how my luck has gone so far). Also I would guess that they shouldn't be too expensive, and several dollars is far less expensive then spending the time trying to clean up the current ones. Mark Elliott 1964 Crown 4dr At 08:13 AM 8/27/2004 -0700, you wrote: >Date: Fri, 27 Aug 2004 01:13:57 -0700 (PDT) >From: Kenyon Wills <imperialist1960@xxxxxxxxx> >Subject: Re: IML: 1964 Crown floor pan >Reply-To: mailing-list@xxxxxxxxxxxxxxxx >--0-1796424218-1093594437=:88792 >Content-Type: text/plain; charset=us-ascii > >I don't know what that stuff is, but I wire wheeled it off using a grinder >with a wire rope cupped wheel attachment, used eastwood rust encapsulator >over rust-mort, and then sprayed undercoating all over and thick. the >undercoating dampens vibration and road noise, and it's going to be >invisible under the carpet, so I laid it on thick. Almost as good as >Dynamat but much less weight. > >Your bolts are probably surface rusted? Try bumping them on a wire >wheel? Re-assemble whatever you put in there with grease on the threads >and they'll be ready for you to swap out again in 50 years and easier to >break loose. Mine looked rotten but cleaned up nicely. Since I'm not >doing much jumping in the old girl, I doubt that there's a tremendous >amount of stress on those bolts if they're all there and tightened evenly. >