Gas Tank Crack – TIG Weld Repair?

[Timothy Hertle]

Another question:
My 1939 Evinrude Elto Cub has a hairline crack in the gas tank that leaks.  The crack is near the base of the gas tank neck where it meets the brass ring.

Is the best fix for this is to have it TIG welded?  There is a custom classic auto shop near me that does TIG welding.  I will eventually paint the exterior of the gas tank down the road.

thanks Tim

[Timothy Hertle]

Would a better option be JB Weld TankWeld?

Not sure how well JB Weld TankWeld works, how well it seals,  and how long it lasts?

[Timothy Hertle]

JB Tank Weld Putty another option?  Does this work?

[Buccaneer]

Use one of the gas tank sealers, that seals the tank from the inside out.
I use the Kreem brand that works well.

Amazon.com: Kreem Products Fuel Tank Liner Combo-Pak 1210 by Kreem Products | Complete 3-part fuel tank liner system, seals & protects tanks, prevents rust & corrosion, made in USA, for 2.5 gallon tanks : Automotive

 

Prepare to be boarded!

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Timothy Hertle

[JOSEPH BRINCAT]

That is a steel tank, correct.. not a good candidate for welding in that location. The brass “ring” was likely soft soldered in pllace. The best permanent fix is to solder the split.  However as the split is up at the very top , any little dab of filler would be fine… or just keep the tank half full

Joe B

1 user thanked author for this post.

Timothy Hertle

[olcah]

I have a 6 gallon external tank that had a split in the tank bottom from someone slamming in the gas nozzle.  A radiator repair person soldered over the crack and it has held up for years.  Soldering is good as temperature is low and no  ark or flame.  Most people do not like welding on a gas tank however empty.

[Tubs]

The tank is steel and the filler neck is brass so it cant be welded. It was soldered in originally and although the others suggestions would work if done correctly, re-soldering is the best repair if you can do that or have it done.

A "Boathouse Repair" is one thats done without having tools or the skills to do it properly.

1 user thanked author for this post.

Timothy Hertle

[opposedtwin]

When looking for a good soldering shop, who does that kind of work? I’ve got a couple older tanks that need repair but it’s outside of my skill set.

[Buccaneer]

opposedtwin wrote:

When looking for a good soldering shop, who does that kind of work? I’ve got a couple older tanks that need repair but it’s outside of my skill set.

Older guy at a radiator repair shop perhaps.

Prepare to be boarded!

[Tubs]

You will need to clean the tank real good, inside and out, to get rid of all the gas and oil before you go.

A "Boathouse Repair" is one thats done without having tools or the skills to do it properly.

[Author]

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