Fuel filler that works, blazer tank?

[muddpile]

I built a fuel filler for my blazer tank in my 72 LWB, but I'm not so sure it will work well. I planned on running a coolcap boat style cap in the drivers corner of the bed, with a brass elbow off that and a rubber hose going into the tank inlet. It seems to me that might fill slow and spill over a lot. Is there a better way than that in a LWB? I can't do the sidemarker thing as I have firebird markers. Thanks!

[myoldchevytruck]

What is the diameter of the fill neck on your blazer tank? I have a poly tank and my fill neck is 1 1/4 inch OD. I have a SWB Step Side and I am using the rear marker light on the drivers side.

As for your location, 1st - is your fuel fill line the same size as the cool cap? If, not, how are you going to reduce it?

I'm using an S-10 filler neck and it's 1 7/8 inch diameter OD, so I got a piece of 1 1/4 inch exhaust pipe and am going to have it opened to just a tad bigger than the S-10 filler neck size and so it will just slip over, than weld it.

The 45 degree filler neck on the blazer tank is a tough angle and 1 1/4 inch makes for slow filling. Do you have a metal or wood floor? If metal, can you use your cap on the floor? The Cool Cap (by Air Ride Technologies I believe) is a real nice cap but you may have to look at other filler caps.
I have a wood bed, so I didn't want to screw up the wood with the gas. Thats why I chose the marker.

Hope this helps.

[FRENCHBLUE72]

Try putting the filler behind the drivers side taillight.

[myoldchevytruck]

As I went into my long winded placement of my filler neck and trying to help Muddpile out, I thought of that and was wondering if there would be any spark with the tail light wires. If that does not pose a problem, for that longbed application - behind the light is a great location.

[Mordachai]

I put mine in the taillight, seems to be a pretty popular mod now.....

I'd suggest that no matter where you decide to put your fill, to make sure to attach a fill vent tube. Without it, the fuel has to go in the same tube the air comes out of, and makes filling the tank slow and sure to have gas dripping/gluging all around the filler.

I am using a blazer tank too, but the angled neck does not seem to pose a problem. I used marine fuel filler hose, as the auto supply houses around me didn't have anything long enough. From the blazer fill to the taillight is almost 4'!

|M|

[myoldchevytruck]

Mordachai, Nice idea. Muddpile, looks like you have some pretty good ideas.

Good Luck

[Mordachai]

I meant to say that I don't think you'd have trouble using that cool cap in the corner as long as it's vented. Before I set my fill up through the light I had the fill coming through the upper surface of the driver's wheel well(they were swiss cheese anyway, another hole didn't make a difference) and it filled just fine.

[muddpile]

I guess I should explain a little better:
-Poly Blazer tank with 1 1/4" I.D. rubber hose clamped over the filler
-Imitation coolcap with 1 1/2" female pipe thread
-90 degree brass 1 1/2" street elbow
-1 1/2" x 1 1/4" brass bushing
-1 1/4" brass male thread x hose barb that has the other end of the hose clamped over it.

The tank is vented, so you think the bedfloor should work decent in the corner?

[Mordachai]

I think it would work, the only thing is that the more horizontal the fill tube, the slower it will fill. I definitely noticed it's slower though the taillight than from when I had it on the wheel well. The filler sits about 3" higher than the tank, so it's a pretty horizontal fill.

If you can elevate it, maybe put it through the inner bedside instead of the floor then it should fill much faster.

[jorgensensc]

Originally Posted by muddpile

I built a fuel filler for my blazer tank in my 72 LWB, but I'm not so sure it will work well. I planned on running a coolcap boat style cap in the drivers corner of the bed, with a brass elbow off that and a rubber hose going into the tank inlet. It seems to me that might fill slow and spill over a lot. Is there a better way than that in a LWB? I can't do the sidemarker thing as I have firebird markers. Thanks!

Why can't you use the sidemarker fill with the firebird light? I am going to be installing them on my truck soon and don't see the problem with mounting them. It will bolt to the gas door itself. What is the problem you are running into. Maybe I'm overlooking something.
Shawn

[Mudder]

Mine works really well but isn't the fastest filling. I may have a little more clearance between the bed floor and the tank but it sounds like you have done yours pretty much like the way I did.

[Mordachai]

hey Mudder. Is that a wood bed, or an I seeing things? And if it is a wood be, how is it held down?

[Mudder]

It is a wood bed and it is bolted down with 9" carriage bolts. They were hard to find btw. The bolts drop through that round spacer you see there under the filler tube.

[cdowns]

the thing that scares me about these hidden behind the light things is that with a very slight tap you've got loose live wires and an open gas filler . seems to me a better chance of explosion from loose wires and gas fumes than with an in the cab tank // just something to think about when moving a tank for alleged safety reasons huh

[Mordachai]

^ Great point, I wondered about it too when I did it, but figured since the old bel airs filled this way, why not try it out. But I also moved mine for more space in the cab, as well as carrying a little more fuel.

[jorgensensc]

Originally Posted by cdowns

the thing that scares me about these hidden behind the light things is that with a very slight tap you've got loose live wires and an open gas filler . seems to me a better chance of explosion from loose wires and gas fumes than with an in the cab tank // just something to think about when moving a tank for alleged safety reasons huh

I can understand your concerns, but I don't think this mod really poses that much of a danger. Consider that as stated before the '56 Bel Air had the fuel fill behind the rear light. Also the newer vehicles have the fuel pump submersed in the gas tank. Remember it isn't electricity that is the culprit, but spark. In all the car fires I have made with HFD I have never seen one explode when it hits the gas tank. I've had tires pop and magnesium steering columns that won't go out, but I haven't scene one explode. I still feel it is a fairly safe mod, however I'm not one to say do it because oh-my-gosh the tank inside the cab is super dangerous. I just like the extra room and not smelling gas when my gaskets get worn and not hearing the gas slosh around behind me. That's just my take.
Shawn

[John Fabris]

I placed my filler in the left rear stake pocket, and I added a vent from the tank up to about 2 inches below the top of my filler that way the air being displaced by the incoming gas could escape without any slowdown in filling. I have no problems filling my tank. Only other change I made was to add a vacumn valve (from a dirtbike gas tank) so as not to get any vacumn in my tank when driving. Pictures of my filler can be found here. http://67-72chevytrucks.com/vboard/s...d.php?t=207027

[panteratron]

check out this one

http://67-72chevytrucks.com/vboard/s...d.php?t=222461

[muddpile]

jorgensensc, the firebird marker is held in by itself, at least in my application. I cut the screw tabs off the bed, and put the trim on the outside of the truck and the lens on the backside, then put the nuts on. You might be able to rig it, but it's hard to say. Plus the firebird markers are sunk in, so difficult to grab.

Mudder, thanks for the pic, that is pretty much the idea I have as well.

John Fabris, Yours is my favorite on this board. I was going to do it that way, but couldn't find one of those caps around here, so I figured I'd go a simpler way.

Panteratron, I must have missed that thread, wow! If I were running LED's, that would be killer.