Tanks, Inc Venting

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plumkrazee70

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I have a 70 dart with a non vented gas cap, however my fuel filler neck is vented.

I bought a tanks, inc tank with their sending unit and a walboro pump. the sending unit has a nipple for venting and so does the tank. They supplied a "T" to hook these together but the rest of the directions are kinda vague.

Where do I hook the final vent line to? The filler neck, I believe just vents into the atmosphere, below the trunk floor.

Thanks!
 
at some point it needs to vent to atmosphere. you can tie them all together or cap off what you don't, but you don't want to try and pull a vacuum on your tank. if your car still has the vapor recovery stuff installed, you could tie into that
 
at some point it needs to vent to atmosphere. you can tie them all together or cap off what you don't, but you don't want to try and pull a vacuum on your tank. if your car still has the vapor recovery stuff installed, you could tie into that

So since, my filler neck is vented, do I need the vent on the tank?

I dont have any emmissions type of equip.
 
my tanks inc came with a small checkvalve, I routed the hose into the top of the wheelwell, this was on my mustang, I added a vent to the filler tube but it didn't seem right even with a vented cap
 
So since, my filler neck is vented, do I need the vent on the tank? I dont have any emmissions type of equip.
technically that is a tank vent. so yes you can cap off the other 2 and just use that, assuming there isn't some reason the tank or pump each need additional venting because of the way they're built
 
technically that is a tank vent. so yes you can cap off the other 2 and just use that, assuming there isn't some reason the tank or pump each need additional venting because of the way they're built

Gotcha. I emailed tanks aswell. My thinking is the tank is probably, fine, with the filler vent, but the pump may need to be vented.
 
my tanks inc came with a small checkvalve, I routed the hose into the top of the wheelwell, this was on my mustang, I added a vent to the filler tube but it didn't seem right even with a vented cap

Mine did also. I asked tanks about that also.
 
it didn't seem as though the tank would vent fast enough with the vented filler tube and vented gas cap, when I opened the cap it breathed a big sigh of relief LOL
 
I have a 70 dart with a non vented gas cap, however my fuel filler neck is vented.

I bought a tanks, inc tank with their sending unit and a walboro pump. the sending unit has a nipple for venting and so does the tank. They supplied a "T" to hook these together but the rest of the directions are kinda vague.

Where do I hook the final vent line to? The filler neck, I believe just vents into the atmosphere, below the trunk floor.

Thanks!
I'm running a tanks Inc in a 68 barracuda. I tied the 2 tank vent lines together and am just running the filler vent.
 
Also following as I’m contemplating buying a tank from them
 
The fittings on the sender have nothing to do with venting. If you have the old style (70/ earlier) vent at the top of the filler neck that is all you need, and that is a GREAT system, because it places the vent point as high as you can get in the system. The only possible way that could ever overflow or siphon is if the tank is incredibly full, and you are parked on a sidehill with the filler on the low side. Even then, it would harmlessly drain out the rear frame rail until it "breaks suction."

I'm sure the sender fitting was intended for a fuel return, although the ones I've seen are too small. Return should be same size as supply, because it is LOW PRESSURE
 
The fittings on the sender have nothing to do with venting. If you have the old style (70/ earlier) vent at the top of the filler neck that is all you need, and that is a GREAT system, because it places the vent point as high as you can get in the system. The only possible way that could ever overflow or siphon is if the tank is incredibly full, and you are parked on a sidehill with the filler on the low side. Even then, it would harmlessly drain out the rear frame rail until it "breaks suction."

I'm sure the sender fitting was intended for a fuel return, although the ones I've seen are too small. Return should be same size as supply, because it is LOW PRESSURE

So, I can just use my existing vent and leave the sender and the tank vents capped? I am running this style of regulator which has a return line back to the tank.

Here is the tank I have: 1967-70 Dodge Dart / 1967-69 Plymouth Barracuda Fuel Injection Gas Tank

Here is the fuel pump sender I got: In-Tank Fuel Pump Module - GPA-Series

And here is the return style regulator I got (sencond one) : LS Fuel Filter Regulator
 
^^You might double check my rambling. I did not "think" at first about you are using aftermarket stuff. However, you only need one tank vent, and the factory filler neck one should be enough. After all you are not exiting that much fuel from the system. The return part of the pump// system essentially needs no return, because the fuel is just going "round and round." I'm sure the second sender vent won't hurt, but you DO want it "up high" and teed into the original would do that
 
^^You might double check my rambling. I did not "think" at first about you are using aftermarket stuff. However, you only need one tank vent, and the factory filler neck one should be enough. After all you are not exiting that much fuel from the system. The return part of the pump// system essentially needs no return, because the fuel is just going "round and round." I'm sure the second sender vent won't hurt, but you DO want it "up high" and teed into the original would do that

I will call Tanks tomorrow. Thanks for the guidance! I'll post back what I find.
 
I’m using the tanks inc combo for the efi capped off tank and pump breathers and ran the factory breather on the filler neck. No issues here as mentioned ^ best place as it’s at its highest level. But I do run one of those flip fuel caps and I do believe they do allow air in as I never experienced any suction when I open it to refuel.
 
Here is the response from Tanks.

would recommend plugging the vent on the pump assembly and hooking up the vent on the tank to the supplied rollover vent valve. The valve then needs to be mounted as high as possible with no low spots in the hose that you use. Most people mount the valve above the rear-end or in a wheel well.

So I will go forward with this route.
 
I’m using the tanks inc combo for the efi capped off tank and pump breathers and ran the factory breather on the filler neck. No issues here as mentioned ^ best place as it’s at its highest level. But I do run one of those flip fuel caps and I do believe they do allow air in as I never experienced any suction when I open it to refuel.

Did you use straight fittings or 45 deg, coming out of the sender? Trying to decide.
 
Did you use straight fittings or 45 deg, coming out of the sender? Trying to decide.

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Did you use straight fittings or 45 deg, coming out of the sender? Trying to decide.
You got your answer but to throw it in yes I used the same set up as khubeners but my steel lines ran over the wheel arch than a 45 turn towards the top of the tank and hoses connected from there. Filter was mounted further up towards gear box on frame connector.
 
You got your answer but to throw it in yes I used the same set up as khubeners but my steel lines ran over the wheel arch than a 45 turn towards the top of the tank and hoses connected from there. Filter was mounted further up towards gear box on frame connector.

Thanks! Always nice to hear a different perspective.
 
hopefully you will not have any issues, if you do feel like venting is a problem you can always follow back up with Tanks
 
I have the Tanks Inc and had the roll over vent mounted as high above rearend as possible but when I would fill tank gas would run out under car until the gas in filler tube got lower than rollover vent. Was dangerous so I removed it and rely on filler tube vent
 
I have the Tanks Inc and had the roll over vent mounted as high above rearend as possible but when I would fill tank gas would run out under car until the gas in filler tube got lower than rollover vent. Was dangerous so I removed it and rely on filler tube vent

So you are only using the fuel filler vent?
 
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