Boyds Welding Fuel Tank

[Afirehawk1]

I have this tank installed on my 66.
I am confused on the the 1/2 inch NPT vent. This is the rollover vent I think.
The other port 5/8 inch is for a vacuum canister.

I am installing a remote fill on the bed fender. See photo what i was planning. So should my remote fill have a port added then run a hose from that to the 1/2 inch brass fitting??

Regarding the 5/8 port; i dont plan on running a vacuum canister unless i have to; so just plug that port??
Posted via Mobile Device

[MT65]

The brass fitting sticking up is a roll over valve, it can be used as a vent easily, in the event of a roll over, it closes and doesn’t let fuel out. The other port…? You may want to call the manufacturer and question them….

[vin63]

Typically, you want to vent the tank at the highest point, including the filler neck.

[Afirehawk1]

So would i connect the brass fitting on the tank to the small port on the filler neck that i have shown above?

[MT65]

That would work fine…

[Afirehawk1]

Originally Posted by MT65

That would work fine…

Thanks for the help!

[forestb]

Originally Posted by Afirehawk1

So would i connect the brass fitting on the tank to the small port on the filler neck that i have shown above?

That doesn't sound right. Unless I misunderstood what was being said.

If you do that wouldn't you just be recirculating the fumes instead of venting it. I think you need to plug both holes on the top of the tank and run the vent from the bung in the filler neck into the open air through a hose. Make sure the vent hose has a couple of loops in it which will keep the smell of gas from escaping.

[seabeevin]

Don't you connect a vent hose from the filler neck to the tank?

[Afirehawk1]

Originally Posted by forestb

That doesn't sound right. Unless I misunderstood what was being said.

If you do that wouldn't you just be recirculating the fumes instead of venting it. I think you need to plug both holes on the top of the tank and run the vent from the bung in the filler neck into the open air through a hose. Make sure the vent hose has a couple of loops in it which will keep the smell of gas from escaping.

I have attached another version of the side fill tank with a secondary smaller tube next to the 2 inch. Mine is like this one without the smaller tube

I know the brass port is a rollover vent but should go to something

Second figure is from boyds website
Regarding the vent line connection
Thus why im confused

[forestb]

I am not seeing any links. never mind now I do. but it is too blurry to read.

[seabeevin]

The pictures look identical

[Afirehawk1]

Had trouble loading

[forestb]

Now I understand the confusion. I would call Boyds.

[Afirehawk1]

Other photo

[Afirehawk1]

I think the idea is when i fuel the tank remotely, as the fuel is placed into the tank, the vapors have to be pushed out and is circulated. i was going to use a vented fill cap as well

[forestb]

It might also be that if it is that low on the side there might be a tendency for the gas to slosh back up the filler neck and this would provide a place for it to go rather than out the cap which could ruin your paint.

[Afirehawk1]

on the rollover vent. there is mention of the old style vacuum carbon canister.
any suggestions or ideas on that?
im using this filler cap instead. its a 1.5 inch filler pipe with an an overall of 2.5 inches. this fits perfectly on the top of the rear bed fender.