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Old 07-29-2018, 10:20 AM   #1
Missyblue
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Removed fuel tank have some rust what would you do

As I mentioned we were excited to get power in cab fuel tank removed but underneath I definitely have some light to moderate rusting issues with some pitting. The truck is already been painted so not sure sandblasting is an option. I've read about different rust treatment things such as POR 15 and Eastman products just curious if any of you have opinions or thoughts? I've also read about some gels and products tht are supposed to help dissolve the rust. Or do I attack it with some sort of sanding/grinding blade. Oh and light rust under the old headliner too
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Last edited by Missyblue; 07-29-2018 at 10:23 AM. Reason: Photos
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Old 07-29-2018, 12:06 PM   #2
mr48chev
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Re: Removed fuel tank have some rust what would you do

I'm thinking wire cup brush and rust converter. Not a big fan of doing it that way but it may be your best option.

You could mask it off and sand blast it without too many problems with a small sandblaster. My little Sears blaster doesn't cover a lot of area at one time. Messy inside a cab though.
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Old 07-29-2018, 12:16 PM   #3
Missyblue
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Re: Removed fuel tank have some rust what would you do

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Originally Posted by mr48chev View Post
I'm thinking wire cup brush and rust converter. Not a big fan of doing it that way but it may be your best option.

You could mask it off and sand blast it without too many problems with a small sandblaster. My little Sears blaster doesn't cover a lot of area at one time. Messy inside a cab though.
Oh sweet didn't realize there were small blasters I'll take a look at that thanks! the cab is a demolition mess anyways haha. I was thinking i couldnt get it to a big shop as we don't have a trailer and wasn't realizing they had smaller options.

Also do you have any experience with any specific rust converters?
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Old 07-29-2018, 12:26 PM   #4
Missyblue
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Re: Removed fuel tank have some rust what would you do

Mr48chevy
Something like this? Or what do you have if you don't mind me asking
https://m.sears.com/search=craftsman...r%20kit%20with
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Old 07-30-2018, 11:01 AM   #5
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Re: Removed fuel tank have some rust what would you do

https://www.harborfreight.com/21-oz-...gun-95793.html

Harbor Freight makes this little gun. I have a friend who uses his regularly.

But with that paint in there (and blasting inside a cab is awful...you'll find sand for years) I would definitely just use POR on the inside of the cab. Probably the same on that other part. Do as much mechanical removal as you can without damaging paint. Then POR over what's left.
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Old 07-30-2018, 12:24 PM   #6
Missyblue
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Re: Removed fuel tank have some rust what would you do

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Originally Posted by b-mac View Post
https://www.harborfreight.com/21-oz-...gun-95793.html

Harbor Freight makes this little gun. I have a friend who uses his regularly.

But with that paint in there (and blasting inside a cab is awful...you'll find sand for years) I would definitely just use POR on the inside of the cab. Probably the same on that other part. Do as much mechanical removal as you can without damaging paint. Then POR over what's left.
Awesome thank you b-mac
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Old 07-30-2018, 02:17 PM   #7
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Re: Removed fuel tank have some rust what would you do

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Originally Posted by Missyblue View Post
Mr48chevy
Something like this? Or what do you have if you don't mind me asking
https://m.sears.com/search=craftsman...r%20kit%20with
That's the one I have and I think with replacing the hose I have more in my used one than that. It's great for small projects though.
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Old 07-30-2018, 02:32 PM   #8
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Re: Removed fuel tank have some rust what would you do

Get some Rustoleum Rusty Metal Primer. Blow away the loose stuff & spray it with that. I have used it for years. It seals the rust & leaves a tough coating. You can paint it the next day.
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Old 07-30-2018, 04:25 PM   #9
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Re: Removed fuel tank have some rust what would you do

That was basically what I was suggesting with taking a cup brush on an angle grinder to it and putting the rust converter on it. Several ways do do it and help it last for a long time to come.
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My ongoing truck projects:
48 Chev 3100 that will run a 292 Six.
71 GMC 2500 that is getting a Cad 500 transplant.
77 C 30 dualie, 454, 4 speed with a 10 foot flatbed and hoist. It does the heavy work and hauls the projects around.
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Old 07-30-2018, 04:55 PM   #10
Missyblue
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Re: Removed fuel tank have some rust what would you do

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Originally Posted by Wrenchbender Ret View Post
Get some Rustoleum Rusty Metal Primer. Blow away the loose stuff & spray it with that. I have used it for years. It seals the rust & leaves a tough coating. You can paint it the next day.
Awesome. I'm glad to hear that. I had purchased some of the rustoleum rusty metal primer as I can get it local but was wondering how it held up. Funny I hadnt thought about it but I actually put a rustoleum clear enamel on rusty roof metal and put it in my shower as a wall and it's held up for 2 years and hasn't rusted through!

And thanks mr48 Chevy I'll checkout the cup brush and start there. I'll definitely look into the 2 suggested sandblaster sounds useful but maybe not in the cab like b-mac said but hey I live in the country so good luck she will always be dusty haha

Thanks again
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Old 07-31-2018, 07:29 PM   #11
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Re: Removed fuel tank have some rust what would you do

use a rust converter like rust Mort and then paint . Paint is the only way to stop rust look up miracle paint, better than Por

http://www.tptools.com/Bill-Hirsch-M...aint,2553.html
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Old 08-15-2018, 02:40 PM   #12
Missyblue
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Re: Removed fuel tank have some rust what would you do

so attacking my rust today. Have a wire cup brush which I feel kinda smooths but more so polishes my rust haha. bought a different disk and it's doing better I think as I'm finding some shiny metal but I have a bit of pitting in the floor pans area. guy had it hidden pretty well under spray Bedliner 😣

Any suggestions of tools that might be better? or is this ok?

Also those that suggested sandblasting. trying to research mediums to use. any recommendations for what medium might be best in your experience? going to do wheel well area which is just needing light cleaning and then the floor pans and area from fuel tank that has heavier duty rust

I was planning a path of rust stop products but thought the more I can remove 1st the better especially the scaly stuff. you can see I am finding some raw metal but have along ways to go.
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Old Yesterday, 10:07 AM   #13
b-mac
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Re: Removed fuel tank have some rust what would you do

I think you're on the right track. Those black fiber disc things you are using work pretty well.

I also have pretty good luck with these things:

https://www.harborfreight.com/catalo...2Cf&q=abrasive

But I use an old, crappy, plug-in drill. Good for inner corners and such.

I was in the exact same spot as you, and I decided to blast the inside of my cab.
I live in a fancy-smanchy neighborhood, so I did it inside my garage, inside a tent basically. It was freaking awful, and probably took years off my life.
If I could go back, I would not have done it.
Either send the whole thing out to have a professional blast it, or clean what you can, convert it or POR whatever, and get to driving it faster.
Whatever you do, the truck will probably outlive you...

That said, I use coal slag for blasting. Good for rust, cheap, and won't give you lung cancer. Sand works much better, but do a little research on silica, and you'll change your mind.

Any of the other media probably won't touch your rust.
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Old Yesterday, 10:09 AM   #14
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Re: Removed fuel tank have some rust what would you do

Sandblasting tent of death pics... (as mentioned above)





You can really see my progress on that A-pillar. And I'll admit, clean metal does look pretty.

Last edited by b-mac; Yesterday at 10:14 AM.
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Old Yesterday, 07:13 PM   #15
Missyblue
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Re: Removed fuel tank have some rust what would you do

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Sandblasting tent of death pics... (as mentioned above)





You can really see my progress on that A-pillar. And I'll admit, clean metal does look pretty.

Haha sorry but your tent of death gave me a good laugh thanks! I'm in the country so no one to bother but myself really thankfully. I make much less noise than the neighboring tractors. that's a cool looking truck by the way!
Thanks for the I info I'm trying the drill before I go to blasting not so sure of my comfort level going there. definitely will research the mediums you suggested.
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