I recently purchased another vehicle for pretty cheap. It's was more/less an opportunity I felt I couldn't pass up. A 92 240sx SE convertible. It has a little bit of rust behind the rear tires...no big deal.
Upon further inspection...the rear section of the floor pan (driver's side) has practically rusted through. A fairly decent size-maybe 12"x6"?? The subframe part is still good but the other stuff is pretty much going to have to be replaced-between the door jam and the subframe.
I'll get pictures up soon.It looks scary!!

My question is...if someone were to replace it...would it be easier to just use another floor pan section from a donor or cut out the rear half and use new 22ga. sheet metal?? As it is now..I wouldn't feel safe driving it unless it were to be relaced.

I know it's somewhat hard to give any type of info without pictures...but general knowledge/advice is what I'm after. This isn't a car that will be driven anytime soon either.

Thanks
B

If it were me, I wouldnt replace it with another donor floor section because if yours rusted, that piece probably will too.

I personally would cut out the shitty pieces and weld in new 18-20gauge SS.

-MIKE-

Stroked 2.2L

+1 Cut out the rust and replace with new metal.

Is it critical for the metal to have the different grooves/ridges or can I just make it a flat section??

Is there anything that attaches to the rusted areas? look at it carefully and make sure that there's nothing that needs to be different than just flat.

Erik P.
Official 2GNT thread Hijacker
Some say that he's driven over more Covenant than he's shot, and that his grenades aren't where you'd expect them to be...
All we know is, He's not The Stig... But he is The Stig's Spartan cousin!

If the donor car you're cutting from has non-cancerous/non-rusted metal, you will be fine using that method. We did this on a 73 Porsche 914 which are notorious for rust and the job has held up for years. Just make sure you sandblast the donor or otherwise strip it down to the metal and properly prep and paint every square inch after welding it in.

+2 with just cutting it out and welding in sheet metal rather then useing another piece for a donor car, i had rust probles with a 85 zt i bought, and pending on where its at and the shape, its easier to cut sheet metal to fit to weld, then it is trying to cut a donor car and get the peace to fit right most of the time, or this is with my expereience

Striped and left for dead now rebuilding
96 Eclipse Rs will be T again soon
Cold Air intake, Megan Header, N1 Cat back exhaust, test pipe, UDP, Drum To Disc Conversion, OBX throttle body spacer

I got a huge 3' x 3' sheet of 18ga. today. I love work sometimes.

The area its in is only the flat surface, I dont believe it goes much beyond that. I will have to strip the paint down and shoot the rest of the metal to find out. Outside of sandblasting...is there any other way to strip the rusted parts down?

elbow grease and sandpaper.

or an air grinder with a stripping wheel

chemical paint stripper

I could go on...

Erik P.
Official 2GNT thread Hijacker
Some say that he's driven over more Covenant than he's shot, and that his grenades aren't where you'd expect them to be...
All we know is, He's not The Stig... But he is The Stig's Spartan cousin!

Thanks for the heads up on the mag. That mag always has some good stuff in it. I haven't decided what exactly I am wanting to do with the car...I just couldn't pass up the deal! I am def. wanting to do the 5spd swap though.

I'm still waiting to get some good pics too. It's in the garage right now.