The BSA A7-A10 Forum
Technical (Descriptive Topic Titles - Stay on Topic) => Frame => Topic started by: TaylorP on 21.03. 2021 14:34
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Any experience with a fuel tank leak through the badge mounting screws? The tank isn't in too bad a condition but after filling up I've noticed the leak. I don't know if its coming from the end or the weld. I'm currently thinking whether to fit a modern good quality liner or try and seal it from inside the badge mounting screw. Thanks for any suggestions
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G'day Taylor.
I had similar many years ago with a 51 A7 tank. One of the holes was stripped and in my failed repair it started leaking. I had to line the tank with Por15. It's final resting position to dry was with that part down to give extra thickness over that spot.
Cheers
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If like me you hate 'liners', use silver solder or braze to fill the screw hole and re-tap the thread.
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You'd do well to get an effective solder "fill" of a blind hole, and then you'd do well to accurately redrill the hole for retapping.
And then the tank would need repainting too.. *conf*
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Fill the hole as explained ^^^ and fix the badge with 3m double sided tape. *smile*
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No biggie, done it a few times, with silver solder. Pretty easy really.
Perhaps I've been lucky.
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Maybe fill the hole with jb weld epoxy filler and retap it I’ve not tried anything like that but its worth a go if you have some jbweld in the shed. Its quite liquid and would sink and fill gaps. Alternatively dont tap it and use a good double sided tape for 5he badges, and glue dummy screw heads on as well.
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This is what I plan to do as a first attempt as the rest of the tank is reasonable. Current thought is to then shorten the screw and reuse.
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+1 with you Muskrat on POR 15.
I treated many tanks with it and never had any problems, from friable flat tanks to TIG pinholed new ones.
Make sure you get the tank sealer version, they have a paint as well and it does not work.
Dont leave a pool anywhere inside because the pool bubbles up when drying