The BSA A7-A10 Forum

Technical => Frame => Topic started by: Russ on 16.03. 2011 05:28

Title: Tank Sealer
Post by: Russ on 16.03. 2011 05:28
Has anyone used KBS Coatings "Gold Standard Fuel Tank Sealer". 
Title: Re: Tank Sealer
Post by: muskrat on 16.03. 2011 08:40
G'day Russ,
                just put some in a mates HD tanks. It's not leaking now and he's still riding. I spilt a drop on one of the mount plates un-noticed for a few days, buggered if I can get it off. It's as hard as a rock. Says it's ethanol resistant, but no one I know uses ethanol petrol in bikes.
Title: Re: Tank Sealer
Post by: Russ on 16.03. 2011 10:10
Thanks Muskrat,
Will buy it tommorrow and give it a go. Won't need to use my tank for a couple of years, yes I know I'm slow, so it will have plenty of time to cure. Do you know how much I will need for my tank which, according to Roy Bacon, is 4.25 gallons.  According to the tin, 250ml is enough for a 20 litre tank which is more than 4.25 gallons, but it seems such a small amount.

Thanks Russ.

Title: Re: Tank Sealer
Post by: alanp on 16.03. 2011 16:52
Russ, here's an option.......don't buy it yet!!
There is a big problem with sealants affected by Ethanol in petrol and even if this isn't in your local petrol, my feeling is that it soon will be and for thoise already suffering it will get worse as the % increases.
Some sealants are better than others in this respect and I would wait a while as this gets worked through by the various sealant manufacturers and users have experience of them.
Please bear in mind that if the makers say 'ethanol resistant' that does not mean 'ethanol proof'.
Title: Re: Tank Sealer
Post by: Russ on 16.03. 2011 21:13
Thanks Alan,
Yes that makes sense, I won't rush into it.
Title: Re: Tank Sealer
Post by: Brian on 18.03. 2011 23:06
Russ I havent used the KBS but I have used POR15 and so far it seems good. Its been in the tank for about a year now and shows no sign of any deteriation. I cant see why the KBS wouldnt be just as good.

I wouldnt use any of these products unless its absolutely necessary and remember these ones are coatings, not sealers like Kreen was. If your tank leaks before you put the coating in it will still leak afterwards. You have to solder up any leaks and make sure your tank doesnt leak before you put any of these products in.

A 250ml tin is plenty for a fuel tank but buy a kit with the rust remover and cleaner, its important to use these before putting the coating in. If you do buy a kit read the instructions carefully and do it as they say, if the tank isnt properly prepared and dry the stuff wont work.
Title: Re: Tank Sealer
Post by: Russ on 21.03. 2011 00:17
Brian, Thanks for your input.
The KBS brochure and website state that the product will fill pin holes and weld seams should they be leaking so I'll take their word for it.
I've had this tank rebuilt by John Bennet, who specialises in tank repairs. The tank has now been chromed and cleaned out with correct cleaning fluid.  I had a very small leak in a weld seam after the rebuild, which John has fixed, so I'm now confident it will not leak.  The tank is very clean inside.
Question? Do I use the tank sealer or not as this tank will sit on the bench for the next two years while I fiddle around rebuilding the rest. Also, any suggestions on how I should store the tank for this length of time.
Title: Re: Tank Sealer
Post by: a101960 on 21.03. 2011 00:42
Also, any suggestions on how I should store the tank for this length of time.

Store it in the airing cupboard, that's what I did with mine.

Title: Re: Tank Sealer
Post by: Russ on 21.03. 2011 05:56
Good idea John but I don't have an airing cupboard.

Title: Re: Tank Sealer
Post by: trevinoz on 21.03. 2011 06:14
             I think that you can use the KBS products with confidence.
I have done 2 tanks for work in progress but they have not been fueled yet.
This sealer seems to be very similar to POR 15.
If you have any concerns just ring them, in fact they are not far from my area. I have spoken to them and they are very helpful.
I imagine that in these days of product liability that they would be idiots to make false claims!

Title: Re: Tank Sealer
Post by: Russ on 21.03. 2011 08:46
Thanks Trev.
I'll use it and report back when I put fuel in it "in about 2 years".

Title: Re: Tank Sealer
Post by: bsa-bill on 21.03. 2011 18:44
Store it full, use paraffin, diesel or heating oil.
If it doesn't leak why line it.

I stored mine for about two years maybe more in a plastic bag in a plastic storage box with lid and thought that was all I had to do. didn't check it often enough and it rusted, not severely but enough I though to cause problems.
I sealed it with Por and it's fine
Title: Re: Tank Sealer
Post by: Russ on 22.03. 2011 08:29
Thanks Bill.
I'll fill it with Diesel. If it doesn't leak I won't bother linning it.

Thanks All for your helpful info.
Title: Re: Tank Sealer
Post by: bsa-bill on 22.03. 2011 09:35
Give it an occasional slosh Russ to coat the top.

As a point of interest the firm bought a lot of John Deere tractors (when I worked), most of them are in constant use so no problem but the crawler I drove in the harvest stood idle for most of the year apart from regular starts to circulate oil, the instructions from the Deere dealer were to store it with tanks brim full to prevent condensation forming in the tanks (tanks were plastic BTW),.
The reason for this was the injectors did not like water (common rail engine) and at £1000 UK a time you were not going to be the best liked guy on the payroll if A. the thing would not start when you wanted it and B. it cost 6 grand plus labour to get it going .
I looked after that thing until I retired then it gave problems starting, there followed a three way argument (negotiation) between the firm, Deere and the fuel suppliers as to who stood the cost, turned out the fuel was at fault as many other farms reported the same fault, which brings me nicely back on subject.
In our discussion here we are assuming the fuel we use is mixed correctly, it is quite possible Ethanol might have got into some supplies in greater percentage than stated or any of the other additives for that matter.

Scientific reliable testing is needed.
Title: Re: Tank Sealer
Post by: lawnmowerman on 22.03. 2011 15:35
Even if the fuel is mixed correctly there can be water contamination. While chatting to a 24hr recovery garage owner last week down in the West Country in Bideford he was saying that apart from an increase in fuel filter problems getting clogged with what looked like delaminated fuel tanks, he had a spate of problems recently with water in the petrol - all of which was supplied at a large supermarket in the area. In the end there were so many complaints that the supermarket eventually admitted they had a problem and paid for all remedial work. One customer bought loads of the stuff in cans for their orchard business and put it in mowers, generators, presses etc and the whole lot had to be serviced and fixed by the relevant manufacturers - must have cost a fortune.