gas tank fix

I have a small crack just below the fill cap on the gas tank opening. Allows just enough fuel to leak out to make me nervous. Tried some JB weld, doesnt seem to stay put. Anybody had any success with any other patching compound/epoxy that will hold up to gas?
 
Dan......there are several grades of JB-Weld. There are also other 'poxies that claim gass-proof. Go shopping. Be certain to "ruff-sand" where you need to seal to give the 'poxie sumptin' to hold onto. ......Dell
 
Please be careful when sanding.
Don't mean to give you a scare.
Just concerned.

Maybe someone else can chime in for a second opinion on sanding close to the filler opening.

No disrespect to Dell, I may be totally wrong.

Greg
 
You might check with your local radiator repair shop. They are usually set up to boil out the tank and repair them if needed. I had one soldered up by a radiator shop.
 
Pull the tank. Wash it out thoroughly with laquor thinner then a good cleaner like Simple Green and water. Let it air out for a couple of days. Then clean the area around the crack real well with a wire brush and then solder it up.
Easy.
I've never had much luck using puckys around gas tanks or lines.
 
I repared small pin holes in my 51 A jd this last winter with the sodering iorn. (the big one that you heat with a torch) it flowed in like butter. clean it and flux it and KEEP THE FLAMES AWAY. and you will be ok. Bob
 
JB Weld will work if you have the area cleaned well. Use laquer thinner to clean it. I suggest you clean it several times a day for a couple of days - it will hold!
 
put half a scoop or so of tide laundry soap and a couple gallons of water in the tank,slosh it around good, and then rinse it out well. that will usually kill the gas in the tank. If your still nervous, go get some dry ice, put it in the tank with a bit of water, let sit for a little while and then braze or solder the crack.the dry ice and water produce co2 and displace the oxygen.no oxygen, no boom. leave ice and water in the tank while you work on it, and work in a ventilated area.could even weld it then if you have access to a wire feed.
 
jb weld WILL work.. but as was said.. drain the tank down so the fuel level is lower than the gas. IMHO.. I'd drill a hole on either edge of the crack to stop it.. use a micro drill bit.. nothing big.. sand the area, clean with brake cleaner, then apply the jb weld and allow to fully cure.

they also make gas tank epoxy repair sticks.. these claim to stick to gas wet metal.. but I'd clean it first..

soundguy
 
Sure you can do a quick fix with JB. But remember that tank been in your tractor for 50 years if there is one weak spot there is certainly others! Take it out and wash it out and check for other weak spots. Depending on your skill level or how well equipped your garage is its a diy or send it to a professional to get done. Everybody else gave good ideas how to diy. Last thing you need is that old N going up in flames by jerry rigging the fuel tank. Do it right the first time and never have the worry's of a fire. BTW, put a fire extinquisher on her for safety. Mines on the right rear fender bracket. I'm all about safety and doing it right the first time, my Father and Grandfather drilled it into my brother and me when we were kids on the farm and its easier than a trip to the hospital or calling the fire dept.
 
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