gas filler seal for paint

[nvr2old]

For anyone painting their tank, this technique has worked real well for me for helping to prevent the gas fumes from infecting the raw paint line and peeling it back. Just mask off the entire opening before painting, leaving it bare metal. After painting, take some 1/4" tape and mask back from the paint line about 1/8" and then with your finger put a swipe of JB Weld or Liquid Steel over the exposed paint edge. Peel the tape off immediately after application. Let it dry for a couple of days before you put gas in the tank.

[azr]

Simple and practical, awesome, thanks.

[chuck hahn]

That tank looks very familiar. And it looks way better than it did a few weeks ago.

[pete]

It's a great tip Larry, did this on mine at your suggestion and no issues so far to date

My application was nowhere as neat but at least it's hidden by the cap...

[ikantbreave]

It's a great tip Larry, did this on mine at your suggestion and no issues so far to date

My application was nowhere as neat but at least it's hidden by the cap...

LOL me too! Luckily I saw Larry post about this as I was getting ready to paint a little over a year ago. Mine is uuuugly but covered twice as it should be... Gas cap and gas cap cover.

[Octain]

Good info.

[850GT_Rider]

A great tip, and something NOT done by the guy who painted the tank I bought off of Fleabay. After putting gas in the tank, fought problems with peeling paint until it was all off the inside of the filler neck.

SOMEDAY, I'll have the $$ to have Larry re-paint my tank and side covers

[MisterCinders]

Bumping this with a question. I've done this to three tanks this season. The first one worked great. The other two failed to seal, because the paint has bubble up underneath. Also, the JB weld shows cracking where the fuel has eaten it away as well.

Can't seem to determine why the results might differ across these tanks. Any ideas on what to look for?

[Scratcher09]

I have painted professionally and done many bikes. This is the method I use:

I do not paint the lip of the filler neck.
The base coat overlaps the primer by about a millimeter.
The clear coat overlaps the base coat by about a millimeter.
Each edge (primer, base, clear) is feathered with 800 grit before the next.

I spray primer and feather edge. Then spray base coat overlapping primer and then feather the edge. Then I spray clear coat overlapping base coat and then feather the edge. I have had some of my personal bikes for years and never once have had a problem with the filler neck after I started using this method.

[posplayr]

I have painted professionally and done many bikes. This is the method I use:

I do not paint the lip of the filler neck.
The base coat overlaps the primer by about a millimeter.
The clear coat overlaps the base coat by about a millimeter.
Each edge (primer, base, clear) is feathered with 800 grit before the next.

I spray primer and feather edge. Then spray base coat overlapping primer and then feather the edge. Then I spray clear coat overlapping base coat and then feather the edge. I have had some of my personal bikes for years and never once have had a problem with the filler neck after I started using this method.

I think the essential detail is that the clear coat covers the color edge and overlaps to the bare metal. That is the same as I did except that I also made sure the clear fully filled the joint between the filler neck and the tank.