+- Austinsevenfriends (https://www.austinsevenfriends.co.uk/forum)
+-- Forum: Austin Seven Friends Forum (https://www.austinsevenfriends.co.uk/forum/forumdisplay.php?fid=1)
+--- Forum: Forum chat... (https://www.austinsevenfriends.co.uk/forum/forumdisplay.php?fid=14)
+--- Thread: Fuel tank slosh sealant (/showthread.php?tid=3782)
RE: Fuel tank slosh sealant - Ruairidh Dunford - 18-01-2020
Fuel tanks should be tinned, so far as I know.
RE: Fuel tank slosh sealant - Hedd_Jones - 18-01-2020
The Bill Hirsch slosh has been in my RL 20 years now. It's still super in there as I regularly peer through the hole.
Looks to me someone's just slashed round some paint in a rusty tank.
I have to say that I've also used the POR product, actually in a oil lamp tank. It pretty much did what your photos show. Bubbled and didn't stick
RE: Fuel tank slosh sealant - AllAlloyCup - 07-02-2023
Hi Ruairidh
I’ve seen your post on tank sealing. Neil and I wondered how you stop the Sealant fouling the internal pickup pipe / outlet in the tank? I wondered about blowing air in from a tyre pump while orienting the tank to cover all the sides etc?
Another job to do as well as the steering and charging.
Bill
RE: Fuel tank slosh sealant - Ruairidh Dunford - 07-02-2023
Keep rotating it to get full coverage and then sit it up so the tap is higher than the base of the tank. You could also poke wire through a few times, whilst it cures. I've not had one block up, so far as I can remember...
RE: Fuel tank slosh sealant - Duncan Grimmond - 07-02-2023
"Fuel tanks should be tinned, so far as I know." I agree but it is very difficult to tin mild steel. I have tried...
Using a copper bit in a roofer's soldering butt to tin one face of sheet steel. However as soon as you start the material starts to warp and flex as it is heating locally. Very difficult to flatten out again in sheet-rolls as the solder is not a perfect thickness. The flux residue also stains the rollers meaning a major cleaning operation.
I even tried painting the surface with a flux/powdered solder mixture spread like grease over the surface and the results are patchy.
I buy tinplate from one of the few remaining suppliers and they can only obtain 0.5mm thick material which is totally inadequate for anything bigger than a gallon can. Thicker material is available but only in huge quantities (half a container) and while I plan to carry on working till I drop I cannot imagine using that much in what time I have left!
The mild steel tanks I have made I lined with POR which seems to be a good product on new, clean metal, so far, so good. Never had a problem with a brass one but the material is pricey.
If only Terne plate was still available...
RE: Fuel tank slosh sealant - Ruairidh Dunford - 07-02-2023
I have had around 8 or 9 fuel tanks repaired and tinned in the last couple of years, by Dave Campbell at Lincolnshire Radiators, Duncan.
RE: Fuel tank slosh sealant - Old Dave - 07-02-2023
Blimey! Reading this thread through I am glad I have gone for aluminium (powder-coated black) for my new tank.
RE: Fuel tank slosh sealant - Henry Harris - 08-02-2023
Aluminium is not a good choice for ethanol laced fuel.
RE: Fuel tank slosh sealant - Duncan Grimmond - 08-02-2023
Hi Ruairidh, that sounds interesting. Is the outside tinned as well when you get them back or is it just internal? Does he have a bath of molten tin/solder to do his radiators in? I have a lot of scrap pewter which is almost pure tin but I can't see how I could exploit it without serious investment in melting/handling equipment.
I'm jealous! Obviously much more specialised than my attempts.
There is always an answer...
RE: Fuel tank slosh sealant - Ruairidh Dunford - 08-02-2023
It’s just the inside.
I don’t ask them how, just pleased they can and do.