I am Sooooo Confused over Paint

jos51700 said

Okay, best thread I've read in a LONG time!

I've got a car that's got cancer, bad.
When pulling parts like frame rails and rocker panels and replacing them, what's the prep to insure no more cancer?

Weld through primer, weld em in, good to go, or is there a way and a product to put inside to make they stay rust free? Add drain holes?

Click to expand...

When it is apart it needs to be blasted to Grey metal (no dark pits that is rust) then 2 heavy coats of epoxy before you assemble it. Most of the professionals on the SPI forum just use SPI epoxy for the “weld through primer”. Grind a drill flat to use as a scraper to clean out then epoxy in the spot weld hole before welding. The epoxy can take a lot of heat. When done try to brush epoxy from the inside and let it ooze into the welded joint. About the best you can do without a big tank of epoxy and dip it 1/3 of the way up like the factory did.