Welcome to the The Garage Journal Board forums.

You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!

If you have any problems with the registration process or your account login, please contact contact us.

Go Back   The Garage Journal Board > The Garage > Free Parking

Sponsored Links (Register now to hide all advertisements)

Reply
 
Thread Tools Search this Thread Display Modes
Old 08-06-2010, 09:31 PM   #1
expatriated
Senior Member
 
expatriated's Avatar
 
Join Date: Mar 2009
Location: SE of Disorder
Posts: 1,473
Default Motorcycle Tank Rust Removal?

What do you guys do to get rust out of a bike's gas tank?

I've read about store-bought solutions and homemade stuff (like bb's and diesel fuel being agitated around in the tank).

The tank is in great shape on the outside-paint is great and no dings or dents. Inside, it looks to be mostly surface rust, so I need to save the tank, not get a new one.

I've pulled the tank, drained the old gas and try to pressure wash some of the flaky rust out, with moderate success.

Give me a good procedure and should I coat it with something after it is cleaned?

Thanks
expatriated is offline   Reply With Quote
Old 08-06-2010, 09:37 PM   #2
Arne73
Senior Member
 
Arne73's Avatar
 
Join Date: Mar 2010
Posts: 477
Default Re: Motorcycle Tank Rust Removal?

Drop in a length of chain and shake it up to remove the scale.

As far as surface treatment to prevent future rust...
I'm sure there will be some ideas here shortly
Arne73 is offline   Reply With Quote
Sponsored Links (Register now to hide all advertisements)
Old 08-06-2010, 09:40 PM   #3
Tom2
Senior Member
 
Join Date: Dec 2008
Posts: 2,209
Default Re: Motorcycle Tank Rust Removal?

Muriatic acid is the fastest/easiest. About 3 parts water to 1 part acid. Let it sit, swish it around until the rust is gone. Empty it, rinse with baking soda, then quickly fog it with WD40 to prevent flash rusting.

Did this with my Goldwing gas tank. Worked perfect. Just gotta keep an eye on it and work somewhat fast.
Tom2 is offline   Reply With Quote
Old 08-06-2010, 10:57 PM   #4
ZRX61
Senior Member
 
ZRX61's Avatar
 
Join Date: Aug 2006
Location: AeroSpace Valley, SoCal
Posts: 11,282
Default Re: Motorcycle Tank Rust Removal?

Fill it with vinegar & let it sit for a couple of days. never fails
ZRX61 is offline   Reply With Quote
Old 08-06-2010, 11:49 PM   #5
wjohnson
Junior Member
 
Join Date: Jun 2007
Posts: 5
Default Re: Motorcycle Tank Rust Removal?

If the rust is severe here is a trick:

You need a pressure washer. Grab a handful of small old nuts and bolts. Drop the nuts and bolts in the tank and then use the pressure washer to circulate them around inside the tank. You just stick the nozzle in the fuel cap and spray. You will hear the nuts and bolts banging around inside, keep the nozzle moving. The sharp corners of the nuts and bolts will rub off the rust.

I suppose it is possible to dent the tank and you can certainly scratch the paint if you are not careful.

-Wes
wjohnson is offline   Reply With Quote
Old 08-07-2010, 06:17 AM   #6
OccupantRJ
Senior Member
 
OccupantRJ's Avatar
 
Join Date: May 2009
Location: Eastern North Carolina
Posts: 3,590
Default Re: Motorcycle Tank Rust Removal?

I have taken sand and put into the tank, then using a long tubing nozzle on a blow gun, swirl the sand inside the tank, using my gloved free hand to seal the opening in the tank somewhat. Let it leak air a little to keep from pressurizing the tank. Another method is putting sand or small pebbles inside the tank, wrapping in foam, quilt, or similar, then placing into a concrete mixer. This will tumble clean the inside.
__________________
RJ

It's always easier to find a reason NOT to do something.....
OccupantRJ is offline   Reply With Quote
Old 08-07-2010, 08:14 AM   #7
tncatadjuster
Senior Member
 
tncatadjuster's Avatar
 
Join Date: Jan 2010
Location: Graceland TCB
Posts: 497
Default Re: Motorcycle Tank Rust Removal?

http://rustbeeter.com/
tncatadjuster is offline   Reply With Quote
Old 08-07-2010, 12:22 PM   #8
Rockaholic555
Senior Member
 
Rockaholic555's Avatar
 
Join Date: May 2009
Location: Overland Park, KS
Posts: 131
Send a message via AIM to Rockaholic555
Default Re: Motorcycle Tank Rust Removal?

Vinegar will get the surface stuff out but to make sure the tank stays clean use the POR-15 stuff. I finally bit the bullet and got that stuff for one of my bikes and I'm always going to use it from now on.
Rockaholic555 is offline   Reply With Quote
Old 08-07-2010, 05:24 PM   #9
expatriated
Senior Member
 
expatriated's Avatar
 
Join Date: Mar 2009
Location: SE of Disorder
Posts: 1,473
Default Re: Motorcycle Tank Rust Removal?

Today, I dumped a box of drywall screws in there with 4 jars of CLR. I shook it like crazy for about 30 minutes.

Then, I took the garden hose with the pressure attachment and spent an hour trying to rinse it out.

Result: About 90% of the heavy, flaky, scale that was inside and about 40% of the surface stuff. In other words, I've got 40% of bare metal visible with about 10% of the rust still the heavy stuff down in the corners.

Right now, I have 4 gallons of vinegar soaking in the tank overnight.

Then, I think I'll try that POR-15--where can you buy that?
expatriated is offline   Reply With Quote
Old 08-07-2010, 10:14 PM   #10
donnie
Senior Member
 
donnie's Avatar
 
Join Date: Jan 2007
Location: North Carliona
Posts: 419
Default Re: Motorcycle Tank Rust Removal?

If you do not coat the inside of the tank again it will rust again unless you keep the tank full of fuel in the off seasons. Eastwood has the POR15.
http://www.eastwood.com/ew-gas-tank-...or-cycles.html

Last edited by donnie; 08-07-2010 at 10:19 PM.
donnie is offline   Reply With Quote
Old 08-07-2010, 10:27 PM   #11
deathbound
Senior Member
 
deathbound's Avatar
 
Join Date: Feb 2010
Location: Long Beach, California Uber Alles
Posts: 273
Default Re: Motorcycle Tank Rust Removal?

There's a product specifically for tanks called "KREEM". The kit has what you need to clean the surface rust, rinse, & coat.
__________________
WTB:old structural iron working tools/spud wrenches.
deathbound is offline   Reply With Quote
Old 08-08-2010, 01:11 AM   #12
easyrider
Junior Member
 
Join Date: Dec 2007
Posts: 10
Default Re: Motorcycle Tank Rust Removal?

Kreem is Krap. About five years ago I put it in a new after market tank. Applied it as per the directions........ now its pealing and clogging the petcock.
easyrider is offline   Reply With Quote
Old 08-08-2010, 01:49 AM   #13
Lotek
Senior Member
 
Lotek's Avatar
 
Join Date: Dec 2007
Location: Los Angeles, Ca.
Posts: 5,700
Default Re: Motorcycle Tank Rust Removal?

The gas tank cleaner and sealer kit from Eastwood worked well for me, used it on a fairly rusty Nash Metropolitan tank a couple of years ago, no problems with peeling. Had a shop clean, patch and seal the tank on my 912 last year, results seemed similar, but a shop would probably ruin the paint.
__________________
Tim

Another example of when God turns to Darwin and says "I thought you were going to fix this s@#t".

"You keep using that word. I do not think it means what you think it means. "

"I have a hammer! I can put things together! I can knock things apart! I can alter my environment at will and make an incredible din all the while! Ah, it's great to be male!" -Calvin

Last edited by Lotek; 08-08-2010 at 01:51 AM.
Lotek is online now   Reply With Quote
Old 08-08-2010, 02:37 AM   #14
mad57
Senior Member
 
mad57's Avatar
 
Join Date: Jan 2009
Posts: 1,698
Default Re: Motorcycle Tank Rust Removal?

Quote:
Originally Posted by expatriated View Post
Today, I dumped a box of drywall screws in there with 4 jars of CLR. I shook it like crazy for about 30 minutes.

Then, I took the garden hose with the pressure attachment and spent an hour trying to rinse it out.

Result: About 90% of the heavy, flaky, scale that was inside and about 40% of the surface stuff. In other words, I've got 40% of bare metal visible with about 10% of the rust still the heavy stuff down in the corners.

Right now, I have 4 gallons of vinegar soaking in the tank overnight.

Then, I think I'll try that POR-15--where can you buy that?
how did the vinager work???? i bet the best!! stuffs amazing.
__________________
Work to live not live to work.

Iam also vice president of my car club: Wickedridesnj.com check it out!!!!
mad57 is offline   Reply With Quote
Old 08-08-2010, 07:57 AM   #15
djjsr
Senior Member
 
djjsr's Avatar
 
Join Date: Sep 2006
Location: In the cornfields
Posts: 4,061
Default Re: Motorcycle Tank Rust Removal?

It definitely needs to be sealed inside. Although I've used both successfully, I recommend Red-Kote over Kreem. Be sure the tank is COMPLETELY DRY. Don't take any shortcuts and follow their directions. POR-15 has good products but I've never used it on gas tanks so I don't know if it's any better.
__________________
.
Don in Illinois, home of political corruption and government incompetence.
djjsr is offline   Reply With Quote
Old 08-08-2010, 07:58 AM   #16
spongerich
Senior Member
 
spongerich's Avatar
 
Join Date: Apr 2010
Location: Monroe, NY
Posts: 2,142
Default Re: Motorcycle Tank Rust Removal?

The best ways to remove the remaining rust are Evapo-Rust or electrolysis.

Electrolysis would be cheaper. Wrap a couple of 16" lengths of rebar in nylon window screen to prevent it from shorting to the tank, and slide them into the neck. Fill the tank with electrolyte and you're ready to let her cook. If you keep the tank full, it wont rust much for a good while.. if it does, hookup the electrodes, lather, rinse repeat.

POR-15 coating is good stuff, but it's pricey.
__________________
Tool Junkie

See my eBay listings here.
spongerich is offline   Reply With Quote
Old 08-08-2010, 10:55 AM   #17
slowcamaro
Junior Member
 
Join Date: Aug 2009
Posts: 26
Default Re: Motorcycle Tank Rust Removal?

Ive heard BB's work well with the shake method. May get into so of the tighter areas as opposed to some of the other 'drop in and shake" items.
slowcamaro is offline   Reply With Quote
Old 08-08-2010, 05:19 PM   #18
expatriated
Senior Member
 
expatriated's Avatar
 
Join Date: Mar 2009
Location: SE of Disorder
Posts: 1,473
Default Re: Motorcycle Tank Rust Removal?

Quote:
Originally Posted by mad57 View Post
how did the vinager work???? i bet the best!! stuffs amazing.
Vinegar worked great except in the crevices and back portion. It got a lot more out. There was some flash rusting once I cleaned the vinegar out but I'm going to use POR-15 for the rest of the stuff and to seal it. It's $40 for a kit and that seems well worth it to put an end to all of this tank business.
expatriated is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Sponsored Links (Register now to hide all advertisements)


All times are GMT -5. The time now is 02:18 AM.