How To Pressure Test A Motorcycle Gas Tank

This video is brought to you by www.lowbrowcust...
We get a lot of questions here at Lowbrow Customs about why we state in all of our gas tank listings, "Please make sure and pressure test your gas tank before painting." The simple answer is, no one is perfect and though we strive to have the highest quality gas tanks in the world, there could be something that slips through the cracks, literally. Doing a simple pressure test on your gas tank is cheap insurance on protecting that fancy new expensive paint job you've been planning on doing.
We asked our good friend Tim from Fiorucci Fabrications to help everyone out and make a short video on how to propperly pressure test on a gas tank. Giving you helpful tips on what to look for, and how to fix the gas tank if you do find any pinholes or cracks. These methods work for used and new gas tanks and again will help save you time, money and frustration. Nipping a potential mishap in the butt before it even starts is always a good feeling.
You can find our extremely large selection of custom and stock Motorcycle Gas Tanks at: www.lowbrowcus...
For parts designed and made by Fiorucci Fabrications check out: www.lowbrowcus...

[@royfontenot7014]

Great video. Doing some custom work to a sporty tank for my Shovelhead and this video gave me tons of insight. Thanks!

[@AaronRiegel]

Great video! Perfect timing, I was struggling with a BSA tank that has cracks. TIG welder is next purchase. My MIG blew right through it and then I had more holes to fix😭

[@REVNUMANEWBERN]

20 to 30 minutes on the exhaust?? Sounds a little long BUT a great idea

[@guyseabrook3735]

Thank you. Really enjoyed that.

[@Seitanabolic]

Great info, thanks!

[@markmeister2444]

I bought a 79 Bonneville a few back and when the PO got pizzed off at his wife/girlfriend he would get on the bike and head to his favorite bar and when he got all crap faced he would come out and punch the ever loving dog crap out of the top of the tank this fuel tank was a sight to behold!!

[@REVNUMANEWBERN]

🤣

[@geraldwest3428]

Thanks big time mister...double barrel thumbs up!

[@brucer261]

Great video .! question for you. I'm running a carbureted engine. Since its gravity fed ... Do I need a gas cap that holds a certain amount of pressure or should it not be allowed to build any pressure at all. Should it just have an unrestricted vent?

[@2000tc88]

Guday, I just wanted to know if you need to get the fumes out of the tank to pressurize it. I know you do if it needs welding, but can you try the pressure test first. Thanks for any advise in advance.

[@samhain3824]

Grocery bag under the gas cap handles the vent.

[@rcanoli99]

if you means seals it up for the pressure test I wouldn't do that. It's best to let some air escape thru the vented cap. anything more than ~ 5 PSI risks blowing out the seam welds. but i'm no expert so just my opinion. as they say in the car ads Your Mileage May Vary!

[@samhain3824]

@@rcanoli99 I use a regulator. A Harley bayonet cap will let massive amounts of air out, you won’t be doing a pressure test.

[@rcanoli99]

@@samhain3824 Oh right - ya with a regulator you're good to go.

[@lasersbee]

Thanks for the tips.. 12:36... How many amps was the Tig Welder set to ??

[@REVNUMANEWBERN]

Used to test plastic lawn mower tanks @ 10 psi , occasionally I'd take a chance & jack the pressure up to see what would happen LOL

[@robertadams4415]

Thanks for the info

[@jmarklocklear]

Nice vid. The only thing I would add is a good tank liner (I like POR15) is cheap insurance even after welding up spots like this. Also, if welding is not an option POR15 alone will often take care of small pinholes like these.

[@markmeister2444]

I bought a 68 Triumph Bonneville a few years back and the PO tried to remove some dents from the tank using air pressure and it didn't go so well. He used to much pressure and the bottom of the tank spread like a Butterfly's wings!

[@lowbrowcustoms]

no beuno!

[@renoyabo960]

I really like some design of your gas tank for a bobber as posted in your website and considering buying soon, do you ship globally?

[@lowbrowcustoms]

Yes we ship to many countries around the world

[@leaflee2066]

We need more videos of Todd making Triumph bobbers!

[@miamimotogroup5371]

Can i use jb weld or a liquid to hardened meterial. I dont have a welder and the tank is bare metal??

[@PartyN8]

CAN and SHOULD are subjective. JB weld does make a tank repair specific kit... read the reviews before purchase. It's all about how clean and how much prep you do... you're going to end up with more time in utilizing that product properly than you will to repair the right way (JMHO)

[@miamimotogroup5371]

@@PartyN8 bike sold and no longer worried… lol bought a 2020 sportster 😝

[@CamiloSantana]

you have to drill both ends of a crack to stop it. otherwise, it'll come back.

[@JacobFiorucci]

This dude is a poser big bad telephone tough guy but won't do his shit talking to a man's face 😂😂😂

[@MoeLarrycurly1]

👍🏼👍🏼👍🏼👍🏼👍🏼🏍🏍🍺🖖🏼✌️

[@DailyDrivenBikes_1]

Or if it's a hand fabricated tank.

[@MoeLarrycurly1]

👍🏼👍🏼👍🏼🍺🍺😉🏍😁✌️✌️