Fuel Tank Drain Plug seal (1 Viewer)

[rstoddard]

I drained my tank in my FJ40. The rubber gasket is intact on the bottom of the tank (I left it in place, since it didn’t come off with the plug). Is the any sealant I can/should use on the plug when i reinstall it to ensure I don’t have leaks? Is anything recommended or useful?

Thanks!

 

[Malleus]

That's a non-reusable seal. Get a new one. It seals without sealant.

 

[rstoddard]

I thought the seal was discontinued/ unavailable?

 

[rstoddard]

That's a non-reusable seal. Get a new one. It seals without sealant.

I thought the seal was discontinued/ unavailable?

 

[Malleus]

 

[rstoddard]

View attachment 3423118
View attachment 3423119

Thanks!!!

 

[3_puppies]

what year tank? different size plugs for different year ranges

 

[Malleus]

Yep, I posted the one for mine, because I knew it. Could be different...

 

[Living in the Past]

I thought the seal was discontinued/ unavailable?

It is if you have a 1/79 or newer. Seal, plug and tank are NLA from Toyota. Best answers come with month and year of your cruiser. They look similar but the FJ40s are not one size fits all.

 

[Its me shaneus]

It is if you have a 1/79 or newer. Seal, plug and tank are NLA from Toyota. Best answers come with month and year of your cruiser. They look similar but the FJ40s are not one size fits all.

I am glad i didnt read this thread before cutting up my tank for efi pump. I had to drain and the plug seemed like it had a tar like sealant. This was a NOS tank i had bought a few years ago.

Anyhow, re installed plug with whatever sealant was on it, tested with a little gas and it held. Still no leak a few months later. Got lucky.

 

[KY Longhunter]

I have a Jan 1981 FJ40 and have light seepage at fuel tank plug.

Has anybody made their own gasket for plug?

 

[3_puppies]

I have a Jan 1981 FJ40 and have light seepage at fuel tank plug.

Has anybody made their own gasket for plug?

I used an oring on the plug on my 1980, no issues

 

[charliemeyer007]

Some of my favorite seals/gasket solutions are made by pouring pure lead on some paper then using a hole punch(s) for ID and OD. You can somewhat control the thickness by how hot the lead is, how fast you pour and the temperature of what the paper is on. Pure lead is soft and you can roll it with a pipe and a hard surface. It will crush fit and seal very well - the tighter the ID fit the better.

 

[KY Longhunter]

Some of my favorite seals/gasket solutions are made by pouring pure lead on some paper then using a hole punch(s) for ID and OD. You can somewhat control the thickness by how hot the lead is, how fast you pour and the temperature of what the paper is on. Pure lead is soft and you can roll it with a pipe and a hard surface. It will crush fit and seal very well - the tighter the ID fit the better.

Nice! Where do you get pure lead?

 

[charliemeyer007]

Muzzle loader balls are cast of pure lead. Plumbers used pure lead for cast iron joints.

 

[KY Longhunter]

If I remove plug I’ll likely make my own gasket out of nitrile sheet. I believe plug is M24.

I found this pic in another thread.

 

[peterb]

I used an oil plug gasket from my 1975 40 on my 10/79 tank. Perfect fit.