Return line ideas

Engine, ignition, fuel, cooling, exhaust

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DuckRyder
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Return line ideas

Postby DuckRyder » Wed Mar 21, 2018 5:53 pm

OK someone point out any huge holes in my theory here.

Image

This is the vapor return system which was originally plumped to the charcoal canister. I was originally planning on just tying in here for a return, but with the Y and size reduction I no longer think this is a good idea.

So Plan B.

Image

There is a transfer pipe (for lack of a better term) that goes from the filler to the neck (metal pipe running across the sender.) Now I’m thinking of using a “T” here and returning fuel here. I’ll use a long rubber hose with a T until I confirm it works OK, then have a fitting welded into the metal line and put it back like this with addition of the fitting.

I’ll of course remove the vapor return piping and plug these with a couple HD vacuum caps and aviation sealer. (Of I suppose I could just loop a pice of hose between them.)

Plan C would be to put a return fitting near the sender, but it seems needless to put another hole in the tank to me.

I’m all ears.

See my sorta project thread for other musings:

viewtopic.php?f=22&t=2647&start=30
Robert
1972 F100 Ranger XLT (390/C6/Dana 44 Locker)

"An unarmed man can only flee from evil, and evil is not overcome by fleeing from it." -- Jeff Cooper

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Ranchero50
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Re: Return line ideas

Postby Ranchero50 » Wed Mar 21, 2018 7:41 pm

No. Don't do a top fitting as it'll drive you nuts listening to the gas drain into the tank.

Drill a hole in the tank and install a female fitting and a long length of tubing to the bottom. Weld it to the back of the tank so it doesn't break off if you are ambitious. I did something similar on my diesel conversion. Used the newer 3/8" line for a feed and ran early 5/16" line for the return. Used two stock tubing pieces in the cab so they would look stock and just drilled a second hole through the floor for the return to go through.

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Re: Return line ideas

Postby DuckRyder » Thu Mar 22, 2018 5:05 am

Ranchero50 wrote:No. Don't do a top fitting as it'll drive you nuts listening to the gas drain into the tank.

...


That is a good point I didn’t think of... :oops:
Robert
1972 F100 Ranger XLT (390/C6/Dana 44 Locker)

"An unarmed man can only flee from evil, and evil is not overcome by fleeing from it." -- Jeff Cooper

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DuckRyder
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Re: Return line ideas

Postby DuckRyder » Thu Mar 22, 2018 5:58 am

OK, my tank is a bit different from that one, there is not as much flat area to install the bulkhead type return fitting, the best place would be approximately the same spot as the pickup on the opposite side of the sender, but that will interfere with the sender float. Due to the welding of the pickup, not enough truly flat space over there... :x

OH, and the sender is out, not nearly enough room for the bulkhead fitting... though if a guy had a welder and flare tool that could be made to work too.

Right now I’m unwilling to pull the tank and have a fitting installed so I’m going to go with plan B for the moment. It does have fairly loud exhaust on it....
Robert
1972 F100 Ranger XLT (390/C6/Dana 44 Locker)

"An unarmed man can only flee from evil, and evil is not overcome by fleeing from it." -- Jeff Cooper

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Re: Return line ideas

Postby colnago » Fri Mar 23, 2018 9:27 pm

DuckRyder wrote:
Ranchero50 wrote:No. Don't do a top fitting as it'll drive you nuts listening to the gas drain into the tank.

...


That is a good point I didn’t think of... :oops:


Personally, I'd love to hear gas draining back into my tank. As it is right now, I see way too much going out my exhaust pipe!

Joseph
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Re: Return line ideas

Postby DuckRyder » Sat Mar 31, 2018 7:43 pm

Well I did manage to get the tank sealed up enough to at least greatly reduce the fuel smell in the cab.

My non-elegant return line fitting is capped...

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Robert
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Re: Return line ideas

Postby colnago » Sat Mar 31, 2018 10:57 pm

DuckRyder wrote:Well I did manage to get the tank sealed up enough to at least greatly reduce the fuel smell in the cab.


I was getting gas smell around my sending unit once. The auto shop sold me a tube of non-hardening black Permatex, because it could hold up to gas over time.

Joseph
"Sugar", my 1967 Ford F250 2WD Camper Special, 352FE, Ford iron "T" Intake with 1405 Edelbrock, Duraspark II Ignition, C6 transmission, front disc brake conversion.

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Re: Return line ideas

Postby Bullitt74 » Sun Apr 01, 2018 9:47 am

DuckRyder wrote:Well I did manage to get the tank sealed up enough to at least greatly reduce the fuel smell in the cab.

My non-elegant return line fitting is capped...


I am very curious to see how this pans out... :thup:
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Re: Return line ideas

Postby DuckRyder » Sat Apr 07, 2018 6:06 pm

Well, it seems like it is at least fuel vapor tight...

I’m kinda wishing sniper...
Robert
1972 F100 Ranger XLT (390/C6/Dana 44 Locker)

"An unarmed man can only flee from evil, and evil is not overcome by fleeing from it." -- Jeff Cooper


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