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B gas tank brazing


 
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35 chopper
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PostPosted: Sun Sep 01, 2013 3:05 pm    Post subject: B gas tank brazing Reply to specific post Reply with quote

Our late model B has a hole rubbed in the gas tank it otherwise looks pretty solid. I tried brazing a couple of times but it still weeps. I used flux coated brazing rod. Any ideas/tricks? Thanks!
 
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rick deere
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PostPosted: Sun Sep 01, 2013 3:11 pm    Post subject: Re: B gas tank brazing Reply to specific post Reply with quote

quick steal will work and not leak if you clean area good and is much safer than brazing???????
 
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pbb
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PostPosted: Sun Sep 01, 2013 3:30 pm    Post subject: Re: B gas tank brazing Reply to specific post Reply with quote

My D started leaking around where the sediment bowl screws in. I took the tank off and turned it upside down and I sanded it real good then I put JB Weld on it. I put about 3 different layers over a couple of days. It's been on there over 4 years now and hasn't leaked yet. I tried that gas tank putty at Orileys that you can put on wet and it wouldn't stick at all. Give JB a try ,
 
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David G
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PostPosted: Sun Sep 01, 2013 3:46 pm    Post subject: Re: B gas tank brazing Reply to specific post Reply with quote

I did same thing, cleaned it up good and used jbweld.
 
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tim s
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PostPosted: Sun Sep 01, 2013 4:09 pm    Post subject: Re: B gas tank brazing Reply to specific post Reply with quote

Yes when you Braze a gas tank you have trouble finding some one to help hold the tank....
 
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pbb
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PostPosted: Sun Sep 01, 2013 5:45 pm    Post subject: Re: B gas tank brazing Reply to specific post Reply with quote

I welded a 6 gallon Johnson outboard tank with a 115 volt wire welder. I washed it out serval times and had it full of water when I welded it. It was so thin I had to tack weld it and let it cool and keep tacking until it was sealed.
 
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Bob Harvey
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PostPosted: Sun Sep 01, 2013 7:35 pm    Post subject: Re: B gas tank brazing Reply to specific post Reply with quote

Ya but, it's only difficult 'cause it's 1/2 full !!! ;^)
 
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Dave H
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PostPosted: Mon Sep 02, 2013 3:54 am    Post subject: Re: B gas tank brazing Reply to specific post Reply with quote

I used JB and it has b een over ten years now.
 
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old popper
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PostPosted: Mon Sep 02, 2013 4:33 am    Post subject: Re: B gas tank brazing Reply to specific post Reply with quote

ROFLMAO.... About 40 years ago I was part timing in a small repair shop. A man came in with a gas tank off a lawn mower, and wanted me to weld the hole in it. I said "sure thing, you hold it, I'll weld it." He left, and bought a new tank.
 
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old popper
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PostPosted: Mon Sep 02, 2013 4:36 am    Post subject: Re: B gas tank brazing Reply to specific post Reply with quote

When mine leaked, I had it soldered (by a pro). That has been 10 or 12 years ago. No leaks.
 
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Vern H
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PostPosted: Mon Sep 02, 2013 7:47 am    Post subject: Re: B gas tank brazing Reply to specific post Reply with quote

35 chopper,
You didn t mention a patch piece to overlay the hole. I ve had good luck using galvinized sheet metal and soft solder for this job. Clean and tin area and patch, and sweat it on with your propane torch. Do fill the tank with water first! Good luck, VH
 
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rick deere
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PostPosted: Mon Sep 02, 2013 1:30 pm    Post subject: Re: B gas tank brazing Reply to specific post Reply with quote

empty is more dangerous fumes is what goes bang
 
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35 Chopper
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PostPosted: Mon Sep 02, 2013 2:20 pm    Post subject: Re: B gas tank brazing Reply to specific post Reply with quote

Put JB weld over the braze and it looks to be working. Thanks for all the input.
 
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JDMan Wis.
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PostPosted: Mon Sep 02, 2013 5:39 pm    Post subject: Re: B gas tank brazing Reply to specific post Reply with quote

You can wire feed weld them or braze them all day long if you flush them out with water them take a hose from another welders gas tank co2 or argon an co2 run it in the tank to chase all the air out so you just have co2 coming out. It cant go bang with no fumes in it. Iv welded lots of tanks this way and patch them also.
 
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