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Old 07-15-2014, 03:04 PM   #1
3Kracing
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Re-Conditioning a fuel tank

I bought an NSF100 for the kids and the fuel tank has surface rust and on the inside of it. I cannot afford to purchase a new tank from Honda at ridiculous pricing so I'd like to know if anyone here can point me in the right direction to get this tank cleaned up and back in service.
I have pulled the valve and the straw inside, the valve is good and a new straw and o ring are ordered. What I need to do is clean the inside of the tank and then coat it to prevent any further corrosion.

Any help is welcome
Scott
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Old 07-15-2014, 03:17 PM   #2
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If it's just surface rust there are a few options...
Put a handful of nuts and bolts in the tank with some light oil like WD40 and shake it around until you cant shake anymore. That will help remove any loose rust.
Then clean out the tank and install good quality inline filters and your good to go.

If it's worse you might consider researching how to remove the rust with electrolosis. That will remove all the rust but is more involved. You tube has videos.

As far as coating the inside of the tank, I would only use that as a last resort. The reviews of that are so mixed, regardless of brand, that I think it's an iffy proposition at best.
Even if it works I have doubts that it would last more than a couple of years and then you have a really ugly mess on your hands.
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Old 07-15-2014, 03:24 PM   #3
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Is the tank aluminium?

If it's not aluminium there's a bunch you can do cheaply.

Remove the petcock, put a 1/2 cup of steel BBs inside the tank, seal the tank and shake it vigoursouly.

Dump out the BB's

mix muratic acid and water in equal parts fill the tank and let it sit about an hour, you should see some bubbling. If there's no bubbles, mix the solution again this time add a little more acid.

Do it a third time if needed, and increase the solution 75%acid/25% water.

Let it sit 30-45 minutes, then dump it out.

Now rinse the tank with baking soda and water solution to neutralize the acid.

Once it has dried, prep the iside of the tank.

It's time consuming but easy.

Do not let the acid/water solution get on the paint, it will eat it off.

You can get the acid at any decent hardawre store.
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Old 07-15-2014, 03:42 PM   #4
3Kracing
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It's a steel tank, and bad enough to try this for sure. Once I've done all of the acid bath and neutralized the tank do I just gas and go?? I always use good fuel filters so that's not going to get overlooked.

thanks for the information!

Quote:
Originally Posted by anatram View Post
Is the tank aluminium?

If it's not aluminium there's a bunch you can do cheaply.

Remove the petcock, put a 1/2 cup of steel BBs inside the tank, seal the tank and shake it vigoursouly.

Dump out the BB's

mix muratic acid and water in equal parts fill the tank and let it sit about an hour, you should see some bubbling. If there's no bubbles, mix the solution again this time add a little more acid.

Do it a third time if needed, and increase the solution 75%acid/25% water.

Let it sit 30-45 minutes, then dump it out.

Now rinse the tank with baking soda and water solution to neutralize the acid.

Once it has dried, prep the iside of the tank.

It's time consuming but easy.

Do not let the acid/water solution get on the paint, it will eat it off.

You can get the acid at any decent hardawre store.
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Old 07-15-2014, 06:08 PM   #5
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Cycle gear sells a 3 part kit that cleans rinse and seals the tank. Its called Kreem
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Old 07-15-2014, 07:04 PM   #6
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Evaporust, chelating agent and won't flash rust afterwards like using an acid.
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Old 07-15-2014, 07:39 PM   #7
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Evaporust flat out works!
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Old 07-15-2014, 09:38 PM   #8
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My first bike had rust in it.
I put 5 1/2 gallons of vinegar in it and let it sit for a week. Came back drained it, made sure the take was 100% dry and used Red Kote. Its a liner that cost i think 32 bucks. I works really well, just make sure to let it cure properly.
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Old 07-16-2014, 10:38 AM   #9
3Kracing
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Fantastic feedback, Thanks MotoHouston! We definitely have a plan to do this and some great information. Tom responded to my inquiry on the CMRA board with some good information as well as some product recommendations. I'll document the process we use and let you know the results so that it can be filed away for future reference.
Scott
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Old 08-09-2014, 02:24 PM   #10
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Quote:
Originally Posted by 3Kracing View Post
Fantastic feedback, Thanks MotoHouston! We definitely have a plan to do this and some great information. Tom responded to my inquiry on the CMRA board with some good information as well as some product recommendations. I'll document the process we use and let you know the results so that it can be filed away for future reference.
Scott
How did the tank turn out? I'm working on doing a gas tank at the moment with electrolysis and maybe sealing it with a think coat of Red-Kote.
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Old 08-09-2014, 07:00 PM   #11
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Caswell two part epoxy treatment worked very well for me.
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Old 08-09-2014, 07:55 PM   #12
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Quote:
Originally Posted by cuong-nutz View Post
How did the tank turn out? I'm working on doing a gas tank at the moment with electrolysis and maybe sealing it with a think coat of Red-Kote.
Did you mean thin or thick?
Do NOT go thick.
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Old 08-09-2014, 08:00 PM   #13
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Quote:
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Did you mean thin or thick?
Do NOT go thick.
Thin
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