81 gl1100 derusting gas tank without removal.


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B0b88
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81 gl1100 derusting gas tank without removal.

Postby B0b88 » Tue Mar 19, 2013 2:18 pm



I'm sure the absolute best way would be to remove the tank, I just honestly don't have the space or the time as I work 65+ hours a week... I've been debating either electrolysis or vinegar... I know a few have had experience with this on here... I've read all sorts of forums and watched YouTube videos... I'm leaning more towards the vinegar approach, I'm just worried I won't be able to get all of the vinegar / distilled water and baking soda out after I complete the process... If I go that route I would try to run as much cheap gas as possible through it afterward to get all the vinegar/baking soda out of the tank... Any suggestions o wise ones? (Wish they had kept in the tank drain plug on my year)

Thanks in advance :)
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trashtruck
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Re: 81 gl1100 derusting gas tank without removal.

Postby trashtruck » Tue Mar 19, 2013 3:47 pm

shop vac might get most of it. when rinsing with the gas, use a compressor and blow out the tubes to the petcock. i'd remove the petcock first.
WHAT IS THE SPEED OF DARK?

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B0b88
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Re: 81 gl1100 derusting gas tank without removal.

Postby B0b88 » Tue Mar 19, 2013 4:02 pm

Yeah, I would def remove the petcock and the fuel lvl sending unit before I started... I'm actually leaning more towards electrolysis after more reading. Plus my buddy has a charger that has an industrial charger that has a 200 watt setting.. I'm guessing with that much power it would only take about an hour?

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Fulcrum
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Re: 81 gl1100 derusting gas tank without removal.

Postby Fulcrum » Tue Mar 19, 2013 10:20 pm

I used Metal Rescue. You can find it at some Home Depot stores and at Summit Racing. Its $25 a gallon and I recommend 2 gallons for a tank. You could probably still get away with only 2 gallons if you are not willing to remove the tank, you will just need to use something to displace the fluid to fill the full tank cavity. Then you could use the 2 gallons and with enough "items" to displace the volume, just let it sit for a day or so and your tank will look brand new. Easiest method and best results.

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B0b88
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Re: 81 gl1100 derusting gas tank without removal.

Postby B0b88 » Wed Mar 20, 2013 12:50 am

The difference from what I've read is, when you use a product like that its etching the metal with acid... Which means you will have to use a sealer or the tank will rerust if its not kept full with fresh fuel.. The electrolysis preserves the factory sealer and will not eat some of the metal away liked an acid.. I got this really sweet charger from my buddy tonight. I'm going to use it tomorrow :) I will post pics!

I've read that almost everyone removed the tank level sending unit.... Here is a pic of mine and all the rust that is on it :/
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Fulcrum
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Re: 81 gl1100 derusting gas tank without removal.

Postby Fulcrum » Wed Mar 20, 2013 1:16 am

Metal rescue doesn't require you to seal a tank. All it does it eat the rust. You need to check it out on youtube. Sold me.

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SteveB123
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Re: 81 gl1100 derusting gas tank without removal.

Postby SteveB123 » Wed Mar 20, 2013 6:17 am

B0b88 wrote:The difference from what I've read is, when you use a product like that its etching the metal with acid... Which means you will have to use a sealer or the tank will rerust if its not kept full with fresh fuel.. The electrolysis preserves the factory sealer and will not eat some of the metal away liked an acid


I've hope you've read how a rusted tank still has a "factory sealer" still intact.
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B0b88
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Re: 81 gl1100 derusting gas tank without removal.

Postby B0b88 » Wed Mar 20, 2013 9:24 am

Lol I was thinking that as well, from what I've read people seem to think it does hahahaha it seems to defy logic to me as we'll :)

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Re: 81 gl1100 derusting gas tank without removal.

Postby WingAdmin » Wed Mar 20, 2013 9:59 am

Electrolysis certainly does strip metal away from the inside the tank, that's precisely what electrolysis is - using electricity to transfer metal from the tank's inner surface to the anode (nail or whatever you hang in there). In either case, the tank really should be sealed afterward, for two reasons: to seal it due to the somewhat thinner remaining metal, and to prevent the fresh, exposed steel from rusting again (which it will do, quickly).

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B0b88
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Re: 81 gl1100 derusting gas tank without removal.

Postby B0b88 » Wed Mar 20, 2013 10:21 am

In other words The only way todo it Proper is to remove the tank? :(

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patbrandon1
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Re: 81 gl1100 derusting gas tank without removal.

Postby patbrandon1 » Thu Mar 21, 2013 12:02 pm

Metal Rescue does not eat metal. It won't even hurt the paint, or your hands. It only eats the rust. I've been amazed at how good this stuff works. If you don't want to remove the tank, buy 5 gallons of this stuff and fill the tank. First keep the tank level sending unit in place. Fill that sucker right to the very top. Wait 24 hours, and drain. You're done, and you can reuse the MR until it is black. I have done 3 tanks, and figure I can do 2 more with the 5 gallons I bought. Works on any rusted parts. DO NOT SEAL your tank, you will regret it. If rust returns because you left it sit low on fuel for a time, MR it again. Even pros can't seal a tank without it peeling away from the metal eventually. There is no need to seal it after using Metal Rescue. Youtube it, and what you see is exactly how good it works, and just what you need if you don't want to remove the tank.

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Fulcrum
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Re: 81 gl1100 derusting gas tank without removal.

Postby Fulcrum » Thu Mar 21, 2013 5:27 pm

I second patbrandon1, you just cant beat this stuff. I removed my tank and it was way super rusted and only used one gallon of metal rescue, $25 bucks, and it cleaned the crap out of it. And I cleaned a bunch of other parts with the leftover and it still works. Amazing stuff and the best part is you just pour it in and leave it for One or two days max! It does all the work. No need to pour nuts and bolts in and slosh around for an hour. Just eats the rust away. I am honestly amazed that more people haven't heard of this stuff. Seriously check it out as an easy option. Check out the pics on my "Scotts 82 GL 1100 rebuild" thread for some pics of it in action.

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patbrandon1
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Re: 81 gl1100 derusting gas tank without removal.

Postby patbrandon1 » Thu Mar 21, 2013 6:10 pm

Yes Fulcrum , I too am surprised that more people don't know of this amazing stuff. To be able to get a tank sparkling clean without pulling it off a Wing, it's worth $125. Any other way is going to have a cost, and not be as efficient. But a person could displace the volume in the tank with something, and reduce the cost somewhat. Or could even drain all the fluids, and lay the bike on it's side, and cut the cost in half maybe.

A friend of mine had pulled the lighter mechanism off his Wing the other day, and replaced it with a whole new one for $11. He did this because the base was rusty, where what you plug in contacts the bottom. Just for grins, I brought it home and put it in a cup of MR that I had used to almost the point of it being black, and left it in over night. It cleaned that lighter base up like it was brand new.

But if anyone uses this stuff, read the directions on the MR site. You must have a warm environment for it to work well. If you try this stuff once, you will be sold. I'm still very curious how this stuff can remove rust and not hurt paint, leather, rubber, or even your skin.

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Fulcrum
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Re: 81 gl1100 derusting gas tank without removal.

Postby Fulcrum » Thu Mar 21, 2013 8:55 pm

Yeah this stuff is a miracle for us old car-bike-airplane owners. It probably works the same way rust works, its all in the chemistry. I'll bet some ex-NASA or Dow Chemicals guy invented this stuff. But seriously check it out. I'm not selling the stuff I'm just singing its praises! Worked wonders for me.

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B0b88
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Re: 81 gl1100 derusting gas tank without removal.

Postby B0b88 » Thu Mar 21, 2013 11:09 pm

They should be paying you guys lol! I went the eloctrolisys method against everyone's advice :X but man did it work great! If I have any further problems I will remove the tank and get the metal rescue... In about two months we will be moving into a house and I will have my very own two car garage muahahahaha I can hardly wait! Right now I'm working out of a car space at my apartments and am using my ford escape as my pseudo garage :/ here are the before and after pics





My patent pending shop vac attachment to suck out all the muck :)


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B0b88
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Re: 81 gl1100 derusting gas tank without removal.

Postby B0b88 » Thu Mar 21, 2013 11:20 pm

A couple pictures of the muck on the anode
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Fulcrum
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Re: 81 gl1100 derusting gas tank without removal.

Postby Fulcrum » Thu Mar 21, 2013 11:28 pm

Wow, awesome job. You have got to make a How-to article on that for everyone. That is amazing!




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