The firewall, shock-towers and front frame rails were galvanized metal, so after 31 years even the original white paint was flaking off the galvanized metal.. shown as gray in the picture. You can see some of the BRE Red paint that was under the silver.
Here is the engine compartment after it was bead blasted. The "red" area's are the original factory primer that held to the plain sheetmetal. The gray areas are the galvanized panels from which the original primer has separated completely.
Pictured Below:Rust Free Battery Stand and inner-fender. You can see that the bead blasting left a little to be cleaned up by hand. Looks like silicon sealer or tape glue.
Pictured Below:This was the condition of the rear deck area. I removed the carpet, jute padding and the tar sound/heat insulation. This left a lot of the glue used by the Previous Owner to glue everything down. The "black" is mostly dirt trapped in the glue. The white is the original paint, the "yellow" is also glue. Some surface rust on the passenger floorboard, because I took the tar matting off and didn't spray the shinny metal down with Ospho to protect it for a week.
I had hand stripped the left shock tower and part of the left hand side of the rear deck area. That was when I decided that the entire interior needed to be stripped by bead blasting.
Pictured Below: Here you can see the glue, dirt etc on the right rear shock tower, in the inner panel of the rear quarter etc.
Pictured Below: After bead blasting -pretty clean and almost ready to prime. A little hand detailing and clean up is all that's needed at this point.
Pictured Below: Left corner of the deck lid threshold plate. Most Z's rust here. This car is perfectly rust free.
Pictured Below: Right corner of the deck lid threshold plate.
Pictured Below: Here you can see a small dent that has been repaired in the past, on the quarter panel. Bead Blasting won't take the body filler out.
Pictured Below: Here you can see a couple small dings, that have been filled in the past, but other than them, the car is about as rust free and straight as any 240-Z I've ever seen. But then, it only has about 12K miles on it now - and all of them have been in the dry weather of Souther California and Baja.