POR 15 fuel tank sealer.

[Tim Smith]

As a matter of interest, has anyone used the fuel tank sealer to seal the tin can hydraulic reservior on a IIA? As I expect to have some spare and the MSDS say that it is a one shot deal once the can is open I tohught I may as well give it a go.

I'm planning a SIII dual circuit brake conversion anyway so I have an out if it all goes horribly wrong.

Cheers
Gregor

Brake fluid (other than DOT 5 Silicone) is a very good paint remover. So before I went ahead with anything in the reservoir, I'd make absolutely sure the sealer is rated to work with it.

I'd imagine that brazing would be sufficient.

[greenmeanie]

Brake fluid (other than DOT 5 Silicone) is a very good paint remover. So before I went ahead with anything in the reservoir, I'd make absolutely sure the sealer is rated to work with it.

Ah now that is the purpose of the experiment. Bear in mind that this is a sealer of some sort and not just paint. As I will have some spare sealer I thought I'd give it a go. If it works it could be a fairly cheap way to rejuvinate these things.

I have a back up plan just in case.

Cheers
Gregor

[siii8873]

All this talk about gas tanks raises a few questions comments.
First I had a tank that I thought was leaking (not 5 gallons overnight). I removed the tank and sealed all the holes with duct tape except the fill neck. I then hooked up the discharge side of my vacuum to the neck to slightly pressurize the tank and sprayed all the seams with soapy water. There were no leaks. In my case I think it was fuel returning to the tank leaking from the line. Not saying you don't have a leak but this is a good way to find one.
Secondly I have an original gas tank that was treated by the PO. The tank looks to be in great shape but the treatment inside is peeling. Anyone know how this flaking could be removed and be confident that all of it is removed? I do not know what sealer was used on the tank.
Thanks

[dwc]

It doesn't lose its effectiveness with exposure to UV light. It just gets dull looking.

From the POR-15 website:

"WILL THE SUN DESTROY MY POR-15 COATING IF I DON'T TOPCOAT IT?
If the surface is exposed to the sun for an extended amount of time, the UV rays will eventually break down the POR-15 and cause it to fail. That’s why we recommend you topcoat it."

http://www.por15.com/faq.asp

[greenmeanie]

In my case I think it was fuel returning to the tank leaking from the line. Not saying you don't have a leak but this is a good way to find one.

That is a good way to find a leak. In my case there was no doubt that the water was peeing out of the void between the double skins on the base of the tank. I pulled the access plates to the tank connections to make sure they were tight just in case.

Secondly I have an original gas tank that was treated by the PO. The tank looks to be in great shape but the treatment inside is peeling. Anyone know how this flaking could be removed and be confident that all of it is removed? I do not know what sealer was used on the tank.
Thanks

My first choice would be hit it with a good pressure washer. If it is already peeling high pressure water will help it on its way. After that I would maybe try some laquer paint thinner or stripper and leave it to soak for a day or two.

After that I might try heat on the outside of the tank but would have to balance that against the risk of loosing my eyebrows if there are still any fumes present.

Cheers
Gregor