tricks for removal of rust and grim from fuel tank?

[Suffolk-Matt]

Grinders metal tank is awful inside, Ive got the tank off the machine.

 

Soaked it overnight with some detergent which has bundged most of the residue but im left with a rust like scale on the inside.

 

I tryed putting a few old nuts and bolts and giving a shake, which loosened a little.

 

any magic tricks?

[treequip]

Take it and get it bead or sand blasted, or, you only need a small DIY type blaster, a full on hydrovane unit will be too much.

 

Rinse and dry then lacquer the inside if you are particularly keen.

 

Sealey Sb993 Shot Grit Sand Blast B...

 

 

Edit

You can get a sand blast pressure washer attachment as well

Edited June 20, 2016 by treequip

[GreenGui]

Oxalic acid. You can (or could) buy it on ebay in powder form. Mixed with water to make a solution and left to soak it eats rust, leaving clean albeit discoloured steel.

 

Here:

 

http://www.ebay.co.uk/itm/1-KG-Oxalic-Acid-Hull-Deck-GRP-Cleaner-Rust-remover-/222155639950?hash=item33b9820c8e:g:YewAAOSwsFpWR6vn

Edited June 20, 2016 by GreenGui

[Wendelspanswick]

I use sharp granite chippings, road sweepings are good. A handful in the tank with some water and make like a cocktail shaker!

[Suffolk-Matt]

Some good ideas there, thanks

[aspenarb]

Grinders metal tank is awful inside, Ive got the tank off the machine.

 

Soaked it overnight with some detergent which has bundged most of the residue but im left with a rust like scale on the inside.

 

I tryed putting a few old nuts and bolts and giving a shake, which loosened a little.

 

any magic tricks?

 

I use a big bag of oddball ba nuts ( about 300 ) and some diesel for this, follow the intructions in the Vid.

 

Bob.

 

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[MATTMOSS]

I have used this process to clean, derust and etch the i side of motorbike fuel tanks before.

You may not need to do the full process just the derust and etch. All the chemicals can be easily and cheaply obtained.

 

Petrol Tank Cleaning and Rust Removal - Real Classic Motorcycle Techniques

[TheHungrySquirrel]

Used this stuff before on some beetle tanks to good effect.

 

http://www.frost.co.uk/por15-fuel-tank-sealers.html

[Kevm]

I always use granite chips to get the worst out, good wash out and dry well and then POR15 - no more problems.

Put the POR15 back in the tin and you can use whats left on another tank.