The Ford Barn

39portlander · 12-20-2015, 07:38 PM

while blasting and cleaning up the gas filler neck I noticed a small crack were the vent is brazed into the tube (pictured).

There is no movement of the small vent tube and the braze seems solid @ the moment. Wondering if I had to repair this at some point how to go about it. Any input would be great. Scott

Lawson Cox · 12-20-2015, 07:44 PM

Heat it up and let the braze flow to seal up the crack. My 2¢.

39 STD · 12-20-2015, 08:05 PM

That doesn't look like brass braze. Looks more like gas weld with steel rod. First thing I'd try, clean it up good and solder the crack shut.

19Fordy · 12-20-2015, 10:21 PM

If you have a welding torch braze completely around the area where the vent tube attaches to the filler tube.

If you don't have a welding torch , MIG welder or TIG welder bury the area with JB Weld.

G.M. · 12-21-2015, 08:49 AM

While you have it apart whether is steel welded or brazed you can
braze it. You just can't heat an old braze to make it flow, you need
flux. I also use gas tank sealer on the lead seal. G.M.

39portlander · 12-22-2015, 06:25 AM

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Quote:

Originally Posted by G.M.

While you have it apart whether is steel welded or brazed you can
braze it. You just can't heat an old braze to make it flow, you need
flux. I also use gas tank sealer on the lead seal. G.M.

As I look it over and read the responses, that probably is lead. I will do the same with the tank sealer. Scott

19Fordy · 12-22-2015, 09:53 AM

I doubt that is lead as it would not be very strong. Easy way to find out is to see if it will cut with a sharp knife.

G.M. · 12-22-2015, 12:13 PM

Quote:

Originally Posted by 19Fordy

I doubt that is lead as it would not be very strong. Easy way to find out is to see if it will cut with a sharp knife.

Why not lead? They solder the radiator over flow.
Plus it cracked. G.M.

WestCoast · 12-22-2015, 05:08 PM

you will have to do some thing with the crack to keep it from traveling, I would use a very small drill at each end of the crack to stop it from getting any longer

39 STD · 12-22-2015, 07:53 PM

After looking at it again, I think it is lead soldered. A little flux, solder iron, & solder will fix you up as good as new. Lead is more flexible than either steel or brass for a joint like that.

12-20-2015, 07:38 PM	#1
39portlander Senior Member Join Date: May 2010 Location: Suth'N Maine Posts: 1,996	gas filler neck... while blasting and cleaning up the gas filler neck I noticed a small crack were the vent is brazed into the tube (pictured). There is no movement of the small vent tube and the braze seems solid @ the moment. Wondering if I had to repair this at some point how to go about it. Any input would be great. Scott Last edited by 39portlander; 04-15-2018 at 06:07 PM.

12-20-2015, 07:44 PM	#2
Lawson Cox Senior Member Join Date: May 2010 Location: Above the gnat line in Georgia Posts: 7,009	Re: gas filler neck... Heat it up and let the braze flow to seal up the crack. My 2¢. __________________ Life is like a roll of toilet paper. The closer to the end, the faster it goes. It is better to be seen, than viewed. "We sleep safe in our beds because rough men stand ready in the night to visit violence on those who would do us harm".

12-20-2015, 08:05 PM	#3
39 STD Senior Member Join Date: Sep 2010 Location: NW Missouri Posts: 149	Re: gas filler neck... That doesn't look like brass braze. Looks more like gas weld with steel rod. First thing I'd try, clean it up good and solder the crack shut. __________________ God is great, beer is good -----People are crazy

12-20-2015, 10:21 PM	#4
19Fordy Senior Member Join Date: May 2010 Location: Coral Springs FL Posts: 10,942	Re: gas filler neck... If you have a welding torch braze completely around the area where the vent tube attaches to the filler tube. If you don't have a welding torch , MIG welder or TIG welder bury the area with JB Weld.

12-21-2015, 08:49 AM	#5
G.M. Senior Member Join Date: May 2010 Location: Florida and Penna. Posts: 4,471	Re: gas filler neck... While you have it apart whether is steel welded or brazed you can braze it. You just can't heat an old braze to make it flow, you need flux. I also use gas tank sealer on the lead seal. G.M. __________________ www.fordcollector.com

12-22-2015, 09:53 AM	#7
19Fordy Senior Member Join Date: May 2010 Location: Coral Springs FL Posts: 10,942	Re: gas filler neck... I doubt that is lead as it would not be very strong. Easy way to find out is to see if it will cut with a sharp knife.

12-22-2015, 05:08 PM	#9
WestCoast Senior Member Join Date: Sep 2014 Location: oroville calif Posts: 893	Re: gas filler neck... you will have to do some thing with the crack to keep it from traveling, I would use a very small drill at each end of the crack to stop it from getting any longer

12-22-2015, 07:53 PM	#10
39 STD Senior Member Join Date: Sep 2010 Location: NW Missouri Posts: 149	Re: gas filler neck... After looking at it again, I think it is lead soldered. A little flux, solder iron, & solder will fix you up as good as new. Lead is more flexible than either steel or brass for a joint like that. __________________ God is great, beer is good -----People are crazy