Frame Rail Repair

Nearly all the unibody parts are spot welded. You will need a spot weld cutter or a lot of drill bits. THe frame rails are spot welded to the floor pans. You will need to drill holes for new plug welds every 2.5 to 3 inches. ANd you will need to butt weld the new frame rail to the old one. Unless you're doing a front frame rail (floor support), then you just replace the whole part. THe front ones will come off easily with an air chisle after the spot welds are cut.

What part are you going to replace? Can you post a picture of it?

The rear will be much harder to do than the front. You will have to decide how much rust is too much. If the rear is rusted, it will most likley be right above the leaf spring shackle. CHeck there first. If you can push a screwdriver through anywhere, that section should be replaced. I use a body hammer with the pick. THe pick will rebound slightly when tapped along the frame rails. It will not rebound on rust that penetrates through to the inside.