Major modifications to tank / welding etc..

Well, I finally got the tank clean enough ( no gas smell ) to weld on. I cut the return and petcock out of an old gpz1100 tank with a whole saw and started to weld them into my tank with my mig welder. What a pain the arse. Every time I think I have it sealed up I put soapy water on the welds and pressurize the tank. 2 or 3 pinhole leaks every time. So I grind the welds down a bit and re-weld. More pinhole leaks...I must have done this 10 times. Next time I braze or solder. Is there anything I can put on these welds to make sure they are sealed up?

Well I got ticked off at the mig welding and went old school on the thing. My first try at brazing. I think my grandfather would be proud. He used to braze everything.

u learn something new every day.
Well done.

mark1122 wrote: u learn something new every day.
Well done.

Thanks Mark, did you get your guages yet?

yes , as a matter of fact, they came last night. i havent even open them up yet. the mail lady left them at the side of the house ane i dindt notice them till i left this am.

Thanks

good job sealing the welds over with the brazing.

leon

531blackbanshee wrote: good job sealing the welds over with the brazing.

leon

Only looks like I did. Still has pinholes. Maybe I'm putting too much pressure to it when testing

dang it!

i have heard that the test pressure should be less than ten pounds.

leon

Did your tank flex when you put pressure to it? I may be using too much heat? Trial and error till I get it.

You could always redcoat the tank. That will seal up any pin holes and might not be a bad idea just for extra security.

Boostable wrote: You could always redcoat the tank. That will seal up any pin holes and might not be a bad idea just for extra security.

I might be heading that direction. Next stop silver solder

my tank never flexed while pressure testing it.

although i was using a innertube so it took the expansion,it would flex long before the tank would.

leon