Tank Sealing

[Terryb]

OK Guy's, what is the best tank sealer?

I have a A7SS 4 gallon tank, which has a high level leak. This is only apparent when filling her up with 3 gallons plus, below this you get a very small leakage, through sloshing about. To my knowledge, the tank has never been sealed.

[chaterlea25]

Hi Terry,
I have had sucess with Caswells products,
Even a treated  fibreglass tank is fine after about 5 years

If the leak is a crack in the tank I would first try to have it welded or brazed ? as I regard lining a last resort
Rot is a different issue

Cheers
John

[Butch (cb)]

Make sure that it will withstand at least E10 petrol, the UK is heading that way soon. If the hole is in a hidden location I'd try just soft soldering it - I've had good results from that in the past.

[Seabee]

I'll second the caswell product.  13 years in the 61 and it still looks like I just put it in, and I use ethanol fuel (no choice).

[Drew Back]

Im going to try a product called red kote..I used it about 10 years ago in my sportster gas tank and still no leaks.I will be using it on my plunger tank which seems to have sprung a few leaks after the nice paint job woops..  just waiting for it in the mail..

[muskrat]

My plunger tank split the seam at the top front of the tunnel near/behind the steering head. One week before a big ride, so no time to repair properly. The split was about 1" long. I cleaned it out with wax & grease remover then metho. I used Pratley's Putty http://www.pratleyadhesives.com.au/epoxy-putties/quickset-putty-%C2%AE-125gm.aspx  About 700 miles now covered (two weeks) and still good. I repaired a hole (pea size) in the A65 crankcase two years ago with the same stuff and all good there too.
Cheers

[duTch]

 Just remembered I've used Devcon "Plastic Steel" on my Beeza tank 2yrs, Guzzi tank (about 3-4 years)and Hilux tank (few months) and is fine so far,  I don't use Ethanol so can't know about that

 I thought I'd used a Selleys "liquid steel" on my Guzzi rocker box to fill a big hole (10 yrs), but maybe was the Devcon...(?)

[Terryb]

Thanks Guy's for the replies, a great help. The 'Pratley' Adhesive, looks to be my first option, thank Muskrat.

I noticed the leak half way through last years riding season and sealed it with Epoxy. The leak is a pin hole at the front where the tank fits over the frame, so its not in a prominent position. Should have fixed it last winter, so 'Pratley' should see me through to the next, then I think it needs be soldered.

Terryb

[muskrat]

Just be sure to read the instructions first. The first time I used it I kneaded it for about 6 minutes. It didn't work. I then read the instruction saying knead it for 8 minutes (about 1 beer) and it was good to its word.
Cheers

[Johnny J]

8 minutes (about 1 beer)

Haha! :-)