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Gas tank filler neck location above bumper.

Geiri

Full Member
Joined
Aug 22, 2007
Messages
194
Loc.
Iceland
So what is against having the filler neck so low?
I was thinking of using that space for the filler neck.

Photo from the Internet... ;)
1698790513785.png
k
 

Wild horse 75

Sr. Member
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May 9, 2023
Messages
463
Loc.
BC
Location doesnt matter as long as it’s running down hill. The flatter it is the harder it will be to fill. You’re also going to be dealing with a decently sharp 90° corner to get it into the tank. Now if you’re going to modify the tank and move the filler to that rear corner you might be able to eliminate any filler and just have a cap on the tank.
 
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Geiri

Geiri

Full Member
Joined
Aug 22, 2007
Messages
194
Loc.
Iceland
Location doesnt matter as long as it’s running down hill. The flatter it is the harder it will be to fill. You’re also going to be dealing with a decently sharp 90° corner to get it into the tank. Now if you’re going to modify the tank and move the filler to that rear corner you might be able to eliminate any filler and just have a cap on the tank.
This looks like a good location because of the closeness to the bumper and steep upward facing.
I just have never seen it used...
 

Broncobowsher

Total hack
Joined
Jun 4, 2002
Messages
37,074
Pintos were using the gas tank as the cargo floor. 1st gen mustangs did the same thing, but a mustang had the gas tank as the trunk floor with a back seat. Pinto being a hatchback put the gas tank in the passenger compartment.

For a low filler neck you need a good sealing gas cap. Plenty of behind the license plate filler necks have dumped gallons of fuel on a hard acceleration. Yes, those GM A-bodies. This also matters on an off-camber situation for a Bronco. You can have the filler cap below the fuel level.

If you look at the original Jeeps, fuel tank under the driver's seat. That is pretty much the same as what you are looking at. Early 70's IH trucks were pretty close but had a little more filler neck.

I'm looking at doing a bumper fill cap on a different project. That run downhill to the top of the tank gets tricky. Planning on flow, venting, really how to fill the tank. And seal it good enough that fuel doesn't leak out and water/dirt doesn't get in. Bumpers are dirty. Way dirtier than the stock location.
 

ba123

Contributor
Bronco Guru
Joined
Oct 29, 2022
Messages
2,757
Loc.
CA
Hell, put it under a panel in the bed.

Seriously though, it’ll most likely leak when you go uphill.

Why do you want it there?
 

Speedrdr

Contributor
Legend in my own mind
Joined
Nov 27, 2017
Messages
2,028
Loc.
Paris, MS
So what is against having the filler neck so low?
I was thinking of using that space for the filler neck.

Photo from the Internet... ;)
View attachment 913193 k
I’m thinking that the area circled in YELLOW would be a better option…not by much…but there would be some tricky pipe work to the tank. Just my thoughts. May not be that great of an idea, but…

Randy
 

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73azbronco

Contributor
Bronco Guru
Joined
Nov 11, 2007
Messages
8,778
Why there may i ask? On the bumper would be far low low, you would end up with gas on the ground.
 
OP
OP
Geiri

Geiri

Full Member
Joined
Aug 22, 2007
Messages
194
Loc.
Iceland
The 66 to 76 caps are not good on my eyes :)
So I found this to be one of the easiest and best places. I appreciate all good inputs.
Tight cap is essential there. @ba123 I like your solution. (y)
 
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