The International CBX Owners Association

My 1980 cbx has been sitting in storage since 1995. Would like to get it running again. The gas tank looks like a RUST pit. Who could I send it to or any suggestion ? The paint on the tank is perfect. I bought this bike new.Has 3900 Miles. Thanks in advance.

I had good results with the POR15 three step tank restoration.
https://www.por15.com/

Also heard good reports on Evaporust.

Of course great care will have to be taken to avoid any contact with the paint on your tank.

Evaporust and Metal Rescue are said to be totally safe on paint. Website for Metal Rescue: https://www.workshophero.com/products/metal-rescue/ You might give these a try.

You are just down the road from me and a long-time CBX owner lives very near to you. As mentioned, try Evapo-Rust first. It won't hurt the paint. Get 5 gallons of it so you don't have to rotate the tank constantly. It will take a few days.

You will definitely need carb work - holler if I can help you there. There are countless other things you need to address. I've outlined many of them here: viewtopic.php?f=27&t=11043

Dave

I am a little late to the party here (just recently found a '79 in the garage). The tank has rust - sounds like a fair amount as I shake it. Which bring me to the various alternatives discussed herein. But first things first: there is a "filler tube" which prevents me from dumping out the crud in the tank. Can this filler tube be removed? If not, by what means have you old pros used to remove tank crud (rust)?

Not quite sure what you are referring to with "filler tube".
There is a metal "splash/slosh guard" that surrounds the opening down into the tank. You just have to work around it.
If you are referring to the petcock opening, if there is a tube there it could be the plastic fuel screen and it can be yanked out.

Along with what ever de-rust method you choose i have used metal nuts when sloshing the liquid around.
Just make sure you count how many you put in to be sure you get them all out.

Yes, Steve, my "filler tube" is your splash/splash thingie.

steve murdoch icoa #5322 wrote:Not quite sure what you are referring to with "filler tube".
There is a metal "splash/slosh guard" that surrounds the opening down into the tank. You just have to work around it.
If you are referring to the petcock opening, if there is a tube there it could be the plastic fuel screen and it can be yanked out.

Along with what ever de-rust method you choose i have used metal nuts when sloshing the liquid around.
Just make sure you count how many you put in to be sure you get them all out.

Your idea of adding a handful of large nuts - ostensibly to knock the flaking rust loose - is an excellent idea. My question is how can the nuts be removed given there is the metal "splash / slosh guard" which would prevent me from just pouring them out. Ideas?

Magnet.

Dave

DaveMadsen wrote:

steve murdoch icoa #5322 wrote:Not quite sure what you are referring to with "filler tube".
There is a metal "splash/slosh guard" that surrounds the opening down into the tank. You just have to work around it.
If you are referring to the petcock opening, if there is a tube there it could be the plastic fuel screen and it can be yanked out.

Along with what ever de-rust method you choose i have used metal nuts when sloshing the liquid around.
Just make sure you count how many you put in to be sure you get them all out.

Your idea of adding a handful of large nuts - ostensibly to knock the flaking rust loose - is an excellent idea. My question is how can the nuts be removed given there is the metal "splash / slosh guard" which would prevent me from just pouring them out. Ideas?

I recall one someone telling me they used a piece of old drive chain, he tied a string or wire to one end leaving the the end of string/wire fixed outside the tank, he'd feed it in, shook it around then just pulled it out by sting/wire when done...I haven't tried it but sounds like it could work...

Go to a junkyard and get a piece of autoglass (door window, eg.) Smash it. It will break into small pieces. Use these instead of metal in the tank and tumble it. It will remove all the rusty scale inside. Remaining pieces will not cause any rust.

EMS wrote:Go to a junkyard and get a piece of autoglass (door window, eg.) Smash it. It will break into small pieces. Use these instead of metal in the tank and tumble it. It will remove all the rusty scale inside. Remaining pieces will not cause any rust.

What a great idea. Thanks Mike.

EMS wrote:Go to a junkyard and get a piece of autoglass (door window, eg.) Smash it. It will break into small pieces. Use these instead of metal in the tank and tumble it. It will remove all the rusty scale inside. Remaining pieces will not cause any rust.

Good idea!

Can the splash guard (the cylindrical shaped gizmo at the filler hole) be removed? There is a lot of lose rust in the tank and I am looking for a way to remove this crud from the tank and obviously, this splash guard prevents me from simply turning the tank upside down and flushing out the lose rust.

DaveMadsen wrote:Can the splash guard (the cylindrical shaped gizmo at the filler hole) be removed? There is a lot of lose rust in the tank and I am looking for a way to remove this crud from the tank and obviously, this splash guard prevents me from simply turning the tank upside down and flushing out the lose rust.

I wouldn't, it's there for a reason...

I posted somewhere else on the forum about a dealer/collector that I met who used an electrical method using a battery tender...I don't recall the specifics of his method because I wasn't paying much attention to the detail as my tank were good...it was simple high school science according to him...

I found this doing web search https://www.instructables.com/id/Electr ... aka-Magic/ after he removed the rust he would coat the tank.