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Old 09-19-2008, 06:36 AM
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Tank bulkhead fitting for passing wires through?

Where can I get the fittings for a fuel cell in which the pump wires pass through? Cannot seem to find it.

Thanks,
Jeff

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Old 09-19-2008, 10:05 AM
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Quote:
Originally Posted by jhilb
Where can I get the fittings for a fuel cell in which the pump wires pass through? Cannot seem to find it.

Thanks,
Jeff
Someone correct me if I'm wrong.....I'd just buy a 10 AN bulkhead fitting....place wires where you need them...block the back with tape (can you still get to the back from another spot on the tank?).....and mix up some epoxy and fill the hole from the front. Other than that...I personally havent seen anything specific for this.

Dave
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Old 09-19-2008, 01:38 PM
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What pump are you using? I am assuming it is a submersible pump for F.I. and you are adapting it to a universal fuel cell.

Can you drill a hole in the fuel cell and insert a rubber grommet with a brass stud going through it and a eye terminal on the wire ends like is normally done on fuel sending units and the in-tank fuel pumps?

I don't think you will ever get the wires to seal passing through any grommet or rubber insert in a bulkhead fittings.

Another reason to do it like that would be that if for some reason the wire stretched and broke, it would not pull through the insulation and break in the tank...With current going through the wire that could be a disaster.


Another alternative is to check out the wiring harnesses that Fuel Safe sells, they are hermetically sealed and it looks like you could mount one side in the tank and the other just plugs in from the outside...



http://www.fuelsafe.com/pdf/Partsand...ories_beta.pdf

Scroll down to page 8 on that PDF.

Just a thought.


Mikey
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Old 09-19-2008, 08:51 PM
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Exactly correct. Two FI pumps actually. I like the brass stud idea, didn't think of that, thanks.

I did see the terminals fuel safe has. I was looking to find something like these in the picture but I cannot find them anywhere.

J



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Old 09-19-2008, 09:14 PM
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That looks like your basic liquid-tight cord grip. Liquid-tight is a term used in electrical wiring supplies, for a type of conduit, connectors and cord reliefs, used in wet enviorments.

http://www.altechcorp.com/PDFS/LTSR_Straight.pdf

Scroll down on that page for the bushings that fit the housings, there you'll find bushings that have multiple holes for wires.

Make sure you find one with a bushing compatable with gas.

Those are also available at any decent electrical supply house.

Later, mikey
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Old 09-19-2008, 10:25 PM
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Old 11-09-2009, 04:28 PM
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I found this searching and figured I might bump this back up.

Fuel Safe used to sell an inexpensive (under $5/pair) kit that would let you put an insulated stud through a fill plate (i.e. metal). It consisted of some insulating washers (nylon I think) and a stainless bolt (or was it a stud?) w/ double nut arrangement. They no longer have it in their catalog. I called them and they said they stopped carrying them about 8-9 years ago because they would leak when upside down (sounds like installation error to me). I can see how fuel could leak down the threads of a stud if a good thread sealant wasn't used.

If you want to recreate it you would need 4 of McMaster #90062a011, a stainless stud or fully threaded bolt, a few nuts, and some thread sealer (i.e. liquid Teflon but I might even be tempted to use red loc-tite). I don't know what you would do with the extra 96 insulating washers because they only come in a package of 100 but at $4.91 the price isn't that bad.

I am working with someone right now that is going to use a 700 HP Aeromotive pump in-tank and it needs 12-awg wires run to it. The Fuel Safe bulkhead connector has much smaller wires.
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Old 11-09-2009, 04:34 PM
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Now, what type of wire do you need to use inside a tank? Mil-Spec Teflon insulated wire would be great for sure but where could you get just a few feet of the stuff? I wouldn't think PVC would like the fuel. Anything else?
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Old 06-08-2010, 10:47 PM
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Quote:
Originally Posted by Triaged
Now, what type of wire do you need to use inside a tank? Mil-Spec Teflon insulated wire would be great for sure but where could you get just a few feet of the stuff? I wouldn't think PVC would like the fuel. Anything else?
The tank I found at the wrecking yard wires did not seem to be anything special and the are in with the fuel . I guess if you are worried you could use them.
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