Topic: So...how do you braze or solder a tank?

[trueblue]

Like I said in my previous post, use Bakers Solder Flux, some 60/40 plumbers solder and a large soldering iron.  The fuel won't worry the solder, and to make it stick, clean the metal up as clean as you can get it.  Don't use resin cored solder it won't flow as well and the resin can leave inclusions in the finish.  Here is a picture of my tank after it was repaired, I didn't think to take a before photo, but just imagine it full of holes along the bottom.

[VTCBike750]

Very cool. Thanks for all the advice and tolerance of my over analyzing. Just dont wanna screw it up.

Next step, go to the store and this weekend get this tank fixed up, unless my wife goes into labor, then all sorts of changes happen around the house.

 I really appreciate it guys.

[trueblue]

Very cool. Thanks for all the advice and tolerance of my over analyzing. Just dont wanna screw it up.

Next step, go to the store and this weekend get this tank fixed up, unless my wife goes into labor, then all sorts of changes happen around the house.

 I really appreciate it guys.

If the missus does go into labour you could always do what my old man did when my mother went into labour with my younger brother, he was in the middle of painting his car, so in between coats he dropped her at the hospital and went back home to finish the job.

[brewsky]

I used this stuff on a car tank that had a pinhole in the bottom of the tank.

Did not have to empty the tank, just wipe clean and stick on the leak area.

Worked for several years.
http://www.autozone.com/autozone/accessories/ITW-Performance-Polymers-1-oz-magnum-instant-gas-tank-repair/_/N-259t?itemIdentifier=552984_0_0_

[70CB750]

I had a pinhole on my spare tank. All I did was sand it, apply flox and solder it with plumbers tin. It holds, but I didnt have gas in it yet.

[colljoc]

I used this to restore and seal my tank "Por-15 CYCLE-TANK-REPAIR-KIT"

[VTCBike750]

I used this to restore and seal my tank "Por-15 CYCLE-TANK-REPAIR-KIT"

Already had on e POR-15 liner fail. Dont plan on using it again.

[VTCBike750]

OK, we have good news! 
First, found a second pin hole underneath the left tank emblem mount .
So then, washed the tank out with degreaser and water a few times then left it to bake in the sun. Held a propane torch over the cap hole and had a few small bursts of flames. Got to the point where I could put the propane flame in the tank and nothing would happen. Then washed it out again and dried it in the sun. Cant find a place in Burlington on a Sunday that sells dry ice, not a single grocery store!
I then using a propane torch, soldering iron, and 50/50 solder with flux I soldered the pin holes closed. So far Im pretty happy with my first attempt. I left the solder on the bottom fairly thick, not knowing how thin the surrounding area was. But I got to say, not too hard to do. If I had to redo It I would probably be less timid about using too much heat. Also, it did a number on the paint.






As a secondary precaution I covered the soldered areas with a 2 part epoxy gas tank pin hole patch. It was 4 bucks and figured it was worth the added benefits.

Thank you to all that helped, hopefully Ill be riding in a few days. Right now the tank is sitting in 8 bucks of Evaporust to remove the flash rust.

[VTCBike750]

Im happy to report that there are still no leaks to the tank since the soldering.

[trueblue]

I doubt you will have any problems if it was done right, I did mine well over a year ago and it is still holding up strong .