Topic: Tall boy gas tank clean up – Antique Outboard Motor Club,Inc

This topic has 18 replies, 10 voices, and was last updated 5 years, 11 months ago by jeff-register.

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February 12, 2019 at 10:07 pm #166725
john8504
Participant
I’m in search of a little bit of information and maybe a direction to go. My tall boy has some rust inside and on the top from moisture. I am also cleaning up all the brass hardware from the due gauge, fuel pickup, and pump rod. I’m currently cleaning as many parts as I can with ketchup.

Questions:
1. Where can I get the diaphram for the pickup?
2. I found a round gasket on the pump rod that is toast. Where abouts do I get a replacement?
3. What is the best way to clean out rust from inside of tank without destroying paint?
February 12, 2019 at 10:18 pm #166729
johnyrude200
Participant
cleaning rust in an old tank:

put a bunch of small nuts and washers inside, wrap in a 4-5 throwaway towels, and then wrap thoroughly in duct tape.

Put it in your dryer on NO HEAT and let it tumble on the gentle cycle for a half hour. It will be free of rust but will need to be cleaned out obviously after with whatever solvent you decide to use.
February 12, 2019 at 10:36 pm #166732
Buccaneer
Participant
US Member
Fist Step Should be….
1.- Make sure your wife is not home.

johnyrude200 wrote:

cleaning rust in an old tank:

put a bunch of small nuts and washers inside, wrap in a 4-5 throwaway towels, and then wrap thoroughly in duct tape.

Put it in your dryer on NO HEAT and let it tumble on the gentle cycle for a half hour. It will be free of rust but will need to be cleaned out obviously after with whatever solvent you decide to use.

Prepare to be boarded!
February 13, 2019 at 7:02 am #166736
john8504
Participant
Yeah!! No kidding! My wife would kill me.

Also, my tall boy is a 49-50 6 bolt model.
- This reply was modified 5 years, 11 months ago by john8504.
February 13, 2019 at 7:49 am #166738
David Bartlett
Participant
US Member
I used electrolysis with a battery charger to clean mine. Very easy and thorough job.

David Bartlett
Pine Tree Boating Club Chapter

"I don't fully understand everything I know!"
February 13, 2019 at 10:59 am #166766
Tubs
Participant
A "Boat House Repair" is one that done without having tools or the skills to do it properly.
- This reply was modified 3 years, 11 months ago by Tubs.
February 13, 2019 at 4:15 pm #166779
john8504
Participant
Yeah there will definitely be hell to pay for sure!! …doesn’t mean I’m not going to try lol.

Electrolysis via a battery charger eh? Hmm i might need to look into that. Could be useful in other applications. Did you just fill the tank with a substance and then introduce two electrodes that were clamped to the charger?
February 13, 2019 at 4:29 pm #166780
Ken Smith
Participant
Canada Member - 2 Years
The chain instead of nuts and bolts is a great idea! Makes it simpler.

www.kenadianoutboards.com
February 13, 2019 at 4:29 pm #166781
David Bartlett
Participant
US Member
John,

That is basically it. You need some washing soda(supermarket laundry section) to add to the water and some sacrificial pieces of steel. Very simple. GOOGLE it and you will find lots of info.

David Bartlett
Pine Tree Boating Club Chapter

"I don't fully understand everything I know!"
February 13, 2019 at 10:25 pm #166803
Mumbles
Participant
Here’s the instructions in PDF from Don Kruitz using a washing soda solution.

Electrolysis_Rust_Removal

One thing to watch out for, most, if not all modern battery chargers will not put out any current unless they have current going into them, such as from a dead battery. The three bank marine charger in the photos is different and puts out current all the time. That’s why there is no battery hooked up in the circuit.
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