I am in the process of cleaning the underside of my car. I plan on painting when I'm finished. My question is should I paint the underside of the floors frame etc with an epoxy primer before painting?

Here is a pic of my pans after I started cleaning. http://img.photobucket.com/albums/v212/ck-2/2005_0211floorpancleaning0013.jpg

YES! By all means coat the whole underside with epoxy primer. Then go over it with what ever black suits you. Looken good! Keep it up!

Another thing,does anyone have advice on how to strip undercoating from the rear wheel wells? Someone has caked this stuff in there. I started stripping it off with a wire wheel on a grinder and it isn't working very good.

I used a screwdriver and it came off pretty easy in big chunks. Good luck and have fun!

I personally would leave it on. That is a great noise/rust inhibitor. If you had to, just spray some other coating in there to fill seams where it is missing.

I would say leave it in there if it's in decent shape and fairly new. The only way you'll get it to come off in chunks is if it's 35 years old and dried out. Then re-spray new undercoating over it.

If you absolutely want it gone so that you can look for rust\rot, use a heat gun to soften it up and scrape it off with a paint scraper\putty knife.

Originally posted by ck 2:
Another thing,does anyone have advice on how to strip undercoating from the rear wheel wells? Someone has caked this stuff in there. I started stripping it off with a wire wheel on a grinder and it isn't working very good. Wire wheels typically "load" too quickly to be of any use. Eastwood sells a special one for this. Or, you can go the route I did and use a heat gun to soften it, then scrape it off with a putty knife. Go over the residue with brakeleen and some steel wool and it will come off pretty easy.

when i restored my car I used some kerosene in a spray bottle.
spray it on wait 5 mins then itll come off like butter

Do a search on Mr. Muscle oven cleaner where I talk about removing undercaoting the easy way.

Thanks everyone for all the tips.