Rust...how bad is bad?
Thread Starter
Instructor
Joined: Apr 2018
Posts: 174
Likes: 17
From: Philadelphia, PA
Drifting
Joined: Jun 2017
Posts: 1,988
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A sand blasted surface is also excellent for por15 adhesion, do that quite a bit on heavy pitted stuff. Again, por15 A-OK per instructions.
GM Cert Corvette Tech
Joined: Apr 2008
Posts: 2,559
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From: Anaheim Hills California
Safety Car
Joined: Jun 2004
Posts: 4,023
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From: La Mesa CA
Safety Car
Joined: Jun 2004
Posts: 4,023
Likes: 1,181
From: La Mesa CA
I also had massive rat nests in my frame
and it stunk to high heaven
I had heard that rat pee is highly corrosive, so
I ended up having to flush out the frame with water
You wouldn't believe all the nasty stuff that came out of there
and it stunk to high heaven
I had heard that rat pee is highly corrosive, so
I ended up having to flush out the frame with water
You wouldn't believe all the nasty stuff that came out of there
Burning Brakes
Joined: Oct 2006
Posts: 1,006
Likes: 28
From: Lutz Florida
Looks like just surface rust to me and not very bad at all. The trailing arm pockets look solid and just minor rust.
I cleaned out, pressure washed and blew out my frame interior on my 71' and then sprayed the interior with Ospho. I used a wand attachment for my air compressor that was designed to be used with engine cleaner/degreaser. It worked great to spray the Ospho. I flooded about a gallon of the stuff into the inside. If you use it, put down some polyethylene film on your garage floor and then drive the car on it. Ospho eats concrete (its an acid) also try not to let it contact fiberglass.
I scraped and wire brushed where I could on the frame exterior and painted it with POR-15. Unless you take the body off you can't get to the frame 100% but you can cover and protect a lot of it.
http://www.ospho.com/
https://www.por15.com/
Messy work.
I cleaned out, pressure washed and blew out my frame interior on my 71' and then sprayed the interior with Ospho. I used a wand attachment for my air compressor that was designed to be used with engine cleaner/degreaser. It worked great to spray the Ospho. I flooded about a gallon of the stuff into the inside. If you use it, put down some polyethylene film on your garage floor and then drive the car on it. Ospho eats concrete (its an acid) also try not to let it contact fiberglass.
I scraped and wire brushed where I could on the frame exterior and painted it with POR-15. Unless you take the body off you can't get to the frame 100% but you can cover and protect a lot of it.
http://www.ospho.com/
https://www.por15.com/
Messy work.
Last edited by stock76; Jun 22, 2018 at 11:35 PM.
