Very interesting! Thumbs up for insisting on a roll over valve and not just for rolling over. As a dealer tech for decades, the roll over valve is part of the vent system because , filling the tank, fuel rich air exists the tank to allow liquid fuel in. Most OEM, like GM & others, use a liquid floating type. When liquid fuel reaches it, it lifts and spring assisted but seals. This action pushes raw fuel fuel up the filler neck and shuts off the pumping action when it reaches the aspirator tube inside the nozzle. There are wires from the pumps nozzle for ground and shut off inside the rubber hose. If the “Ball” does not float or goes to a simple gas line up the roll cage, makes a “U” turn then terminates, the smell of gas will fill the garage as it expands and contracts. Using an activated carbon canister will capture these organic hydrocarbons. It creates a mild exothermic reaction. Once using or pulling the fuel level down, it will allow air in, endothermic reaction, and keeps the tank for collapsing in a vacuum. Canister are sized by the fuel tank. Get a used one from a GM truck in the bone yard and glue some cube of foam (Seat Upholstery Foam) to the canisters “Vent” pipe. Or, attach a hose and place a lawnmower fuel filter on the end. Purge fitting can be plugged unless you program the PCM to purge. No purge cold, idle or upon deceleration as injectors shut off. The roll over valve is connected to “Tank” fitting. The only time “Vent” & “Purge” is closed during “EVAP” testing for leaks. We don’t want hydrocarbons escaping and running off to have fun by the pool or watching the game! Hell No! Hide the canister? Run roll over valve line up high, loop down, go under the bed or somewhere to mount.

I can really appreciate how much time that took tig welding. definitely worth it, turned out awesome?

All the Bleepin Jeep guys need their own minion thumbnail to show who is gonna be in the video. I lost my shit when I first saw yours

Skill n patient..skill n soul...how awesome??!??

That thumbnail!!!! So good. Thanks for the info too, looking to install a fuel cell soon.

That cover pic is killer LOL

Wow! I didn't know anything about fuel cells before watching this. Your videos are gold! Keep them coming!

Matt, you should also include that in case someone was to build/design their own fuel cell to keep in mind as to what type of sending system they are going to use. as it is not uncommon for someone to use the stock unit. however on some vehicles the return line us not only used to return fuel and displace pressure, it is also used to cool the electric fuel pump.

Where did you get the attachment so you can use the stock fuel pump?

Definitely helpful feel more confident putting an aftermarket cell in my wj

Could you help me out with sourcing the aluminum ring with threads to mount the pump? I can't find one to save my life

awesome video

I been following this build pretty good. It's pretty interesting.

thanks for the update and informative post. Crawler is coming together nicely. Cant wait to see it in action, hell of a job thanks for sharing.

best intro ever!!!! actually laughed out loud

I don't know why but the minion yous creep me the hell out haha

you should check out the holley hydra mat... that will eliminate the need for the sump in the tank

Matt, the minion thumbnail is the BEST. I spit my drink out when I saw it...hahaha.

thats great! plus you wont be using the gas as much going down hill, i need too practice some aluminum welding

Anyone know where I can find one of those weld on jeep tj fuel pump rings?