I dont think the gas will eat the gum...

A 2nd option is to carry on as planned but switch the WT weld for something called Cyanoacrylate or CA glue. like this http://www3.towerhobbies.com/cgi-bin...&I=LXPT38&P=ML

You can pick it up at any hobby store just ask for thin CA for balsa wood.

You would patch the whole with the gum then apply this glue onto whats left of the gum and the surrounding metal and then dust with baking soda. Repeat 5 or 6 times until a good seal has been made. This method has been used to repair plastic fuel tanks on lawn equipment like string trimmers with great success. You have to use the thin ca and baking soda.

Start with the white trash weld as it will be much eraser to apply get the stuff that bonds in 5 minutes. I still think this plan will work...as for both plans the metal must be clean and free of gas while the stuff is applied (thats what the gum is for)

happy hunting.

-Gun

 

They make a compound specifically for repairing holes in gas tanks. Like JB weld, but designed for gas tank holes. Check the glue/adhesive/sticky-stuff-in-tubes section of your local auto store.

 

I remember an old comercial on TV that went something like "You can pay me now, or you can pay me later" Replace the tank and be done with it. Since the mustang tank fits, if you want to go cheap, find a used one. At least you won't run the risk of blowing yourself up.

 

Go for the JBWeld. I used that to repair a cracked oil-pan on my 83 Pontiac. It stayed in place even after getting in a 40mph head-on crash with a delivery truck. I would say to run the car until you were low enough on gas that you could jack up one side of the back end of the car and get what's left of the fuel to slosh away from the hole. Then clean the outside of the tank. Low speed with a brass wire wheel should be good (don't want any sparking). After that wipe it down with some Lacquer thinner or 99.9% Isoproply Alcohol to clean up any residues. Then mix up your JB Weld on a small piece of aluminum foil, and slap it on over the hole. Use the regular 24hr set stuff. It's a lot stronger than the JB Kwik (5 minute set).