GL1500 (1993) RUST IN THE TANK


Information and questions on GL1500 Goldwings (1988-2000)
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CRAFFS
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GL1500 (1993) RUST IN THE TANK

Post by CRAFFS » Sun Jul 07, 2019 6:30 am



After removing the fuel pump, I found the tank to have a layer of rust in it (yes, the bike was standing for 2 years with a half full tank :oops: ).

Any tips on: -
1) How to drain the fuel without removing the tank from the frame (e.g. does the GL1500 have a tank drain plug?)
2) How to remove the rust from the metal surfaces (I have heard of using vinegar - fill the tank completely & leave for 3 days). Any other ideas?
3) Cleaning the tank after "loosening" the rust?
4) Any additive that can be added to the fuel to prevent/limit rust forming?

Thank you!



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DenverWinger
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Re: GL1500 (1993) RUST IN THE TANK

Post by DenverWinger » Sun Jul 07, 2019 7:02 am

Getting the gas out should be easy enough, just get a long piece of hose and siphon it out.

I've heard of vinegar too, don't know how well it works.. Might try electrolysis (you can do that with a battery charger) - Google "Electrolysis to remove rust".

Not sure on the sealer, maybe someone else has an idea.
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offcenter
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Re: GL1500 (1993) RUST IN THE TANK

Post by offcenter » Sun Jul 07, 2019 7:59 am

I used electrolysis on my 76 Wing.
Took a few days, but the tank came out looking like new.
George in Jersey.
99 Goldwing GL-1500 SE
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77 Honda CT-90 "Trail 90"

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CrystalPistol
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Re: GL1500 (1993) RUST IN THE TANK

Post by CrystalPistol » Sun Jul 07, 2019 1:44 pm

4) Any additive that can be added to the fuel to prevent/limit rust forming?
Keep tank full of gasoline, you can treat with StaBil ethanol treatment if stored.

I've used electrolysis with a 12 v battery charger to restore cast iron pots, etc. Even made a 5 gallon bucket for it using rebar around perimeter wired together, never occurred to me to do a gas tank, but it should work. I'd undo battery cables on bike first though, to isolate the bike's systems. Ventalation is important, as is progress inspection. Pots come out looking new, so tank innards should too.

https://www.instructables.com/id/Electr ... le-Gas-Ta/

http://www.secondchancegarage.com/publi ... ning-1.cfm
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Re: GL1500 (1993) RUST IN THE TANK

Post by Charlie1Horse » Sun Jul 07, 2019 5:17 pm

Just hook up a long piece of hose to the fuel pump outlet and put 12 volt power to the fuel pump and pump it out into a bucket. Check your local auto parts store for a product to clean and coat the fuel tank. Then replace the 'sock' on the fuel pump before use.
Russell

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Snowmoer
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Re: GL1500 (1993) RUST IN THE TANK

Post by Snowmoer » Mon Jul 08, 2019 10:38 am

A syphon pump can found at Wal Mart, Harbor Freight, or your local auto parts store to remove the old fuel.

For all of these methods of removing the rust, you will need to remove the tank. You need to dump everything out of the tank while flushing the crud out. The best way to do that is by turning it upside down. For the vinegar method, you will need to get some nuts in there and shake the tank to break up and loosen the rust.

You can also use a fuel tank sealer kit that you can get on line, or at most auto parts stores. Again, the tank needs to be out so you can coat the whole tank on the inside. If not, the sealant just settles to the low spot.

I just picked up a clean used tank on E Bay for my 88. I think I paid $30.00 for it with shipping include. The tank was real bad. It sat for 8 years. I was worried that after getting the rust out, there would be pin holes in the tank.

It is a bit of work to get the tank out. You basicaly have to take the whole rear of the bike apart to get it out.

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Mh434
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Re: GL1500 (1993) RUST IN THE TANK

Post by Mh434 » Mon Jul 08, 2019 12:01 pm

If you do decide to remove the tank, there are lots of places that specialize in rejuvenating gas tanks. I had that done on a rare-model gas tank recently. They used a chemical treatment to remove the rust, restored it to brand new, shiny condition inside, then lined the inside with a fuel- and water-proof coating. It should last many, many decades, and wasn't very expensive.

You could even just have it "boiled", where they use chemicals & extremely hot water to just remove the rust & make it shiny and clean inside again, without the lining.

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MikeB
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Re: GL1500 (1993) RUST IN THE TANK

Post by MikeB » Mon Jul 08, 2019 1:07 pm

If you are going to remove the tank to clean it, you may as well get a replacement before you do that. There are dozens of them on Ebay for under $100. Just replace the rusty tank with a good used one.
MikeB
Tacoma, WA, USA

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AZgl1800
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Re: GL1500 (1993) RUST IN THE TANK

Post by AZgl1800 » Mon Jul 08, 2019 5:27 pm

I highly suggest just removing the gas, and going with electrolysis with a 12 v battery charger.

super simple, no need to tear the bike down.
and it removes every speck of rust, even from the fuel gauge components, without harming anything.
~John

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Mh434
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Re: GL1500 (1993) RUST IN THE TANK

Post by Mh434 » Tue Jul 09, 2019 4:44 pm

^^^I have to say, that sounds good to me...

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CrystalPistol
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Re: GL1500 (1993) RUST IN THE TANK

Post by CrystalPistol » Tue Jul 09, 2019 8:46 pm

AZgl1800 wrote:
Mon Jul 08, 2019 5:27 pm
I highly suggest just removing the gas, and going with electrolysis with a 12 v battery charger.

super simple, no need to tear the bike down.
and it removes every speck of rust, even from the fuel gauge components, without harming anything.
X 3
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CRAFFS
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Re: GL1500 (1993) RUST IN THE TANK

Post by CRAFFS » Thu Jul 11, 2019 4:13 am

To everybody that responded, thank you very much for your advice!

Just a bit of feedback: - I already removed the body panels (plastics) as I need to remove & strip the carburetors as well and replace some of the rubber hoses. The body panels, seat & other parts take up a lot of space and with my limited working space, removing the back end of the bike in order to get the tank out will be an (space) issue.
I tried to find a replacement tank here in South Africa but "no go". Getting a replacement tank from the US is not really an option as shipping cost to SA is 54 US dollar plus 15% local tax.
I decided to go the electrolysis way (I checked videos on YouTube and it is really simple and effective).

Again, thank you all!

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AZgl1800
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Re: GL1500 (1993) RUST IN THE TANK

Post by AZgl1800 » Thu Jul 11, 2019 6:34 pm

CRAFFS wrote:
Thu Jul 11, 2019 4:13 am
To everybody that responded, thank you very much for your advice!


I tried to find a replacement tank here in South Africa but "no go". Getting a replacement tank from the US is not really an option as shipping cost to SA is 54 US dollar plus 15% local tax.
I decided to go the electrolysis way (I checked videos on YouTube and it is really simple and effective).

Again, thank you all!
This is the best, and easiest method, that gives the best results, for the least amount of effort. How can you beat that?

It will clean everything inside that tank, filter screens, fuel gauge sender, etc.


~John

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