The Ford Barn

tintop · 09-29-2021, 06:29 PM

Hi,,what exactly does the 34 gas tank drain plug consist of? Is it a pipe thread plug,,1/4" ×18 with slightly taped threads? Or, is it a type of bolt/bung hex head using a copper crush washer? The last thing I want to do, is damage the tank threads. Anyone? Thank You!

Lawson Cox · 09-29-2021, 07:50 PM

Whatever you do, don't use a blue wrench around that plug.

rich b · 09-29-2021, 07:54 PM

Pipe plug.

19Fordy · 09-30-2021, 11:17 AM

Yes it is a pipe thread. Use a dab of this sealer and don't over tighten. Most hardware stores have it. I bought some at Auto Zone.
https://www.acehardware.com/departme...B&gclsrc=aw.ds

cas3 · 09-30-2021, 12:19 PM

Like Lawson said, no heat as the threaded boss in riveted on, and soldered to seal. heat, and solder runs out onto floor. dont ask how I know that !

d.conrad · 09-30-2021, 05:32 PM

Sponsored Links (Register now to hide all advertisements)

Slotted pipe plug

supereal · 10-01-2021, 04:32 PM

Most gas tank "drain plugs" were installed before the tanks were coated with "tern", a
solder-like metal, making plug removal likely to damage the tank. Old cars will usually develop pin hole leaks in the top. where they can't be seen, caused by the layer of road grime that builds out of sight. That was the problem with my '47, and putting in a plastic tank was a really good idea.

JM 35 Sedan · 10-01-2021, 09:41 PM

I've tried several different methods (but never used heat) to remove gas tank drain plugs on various early Ford's, and have never been successful. I usually wind up completely removing the tank, and use the openings for the neck and/or the opening(s) on the top of tank for draining, cleaning, or flushing tank. Or if the tank is found to have serious issues, I replace the tank with a good used or new reproduction.

cas3 · 10-01-2021, 11:39 PM

Agree with JM35, or if the tank is out and you have some skill with a drill you can drill it to the bare minimum of plug left , and remove the last bits with a pick. Then I replace it with a hex head plug so you can get it out next time

09-29-2021, 06:29 PM	#1
tintop Junior Member Join Date: Jul 2013 Location: Riverside, California Posts: 13	34 Gas Tank Drain plug Hi,,what exactly does the 34 gas tank drain plug consist of? Is it a pipe thread plug,,1/4" ×18 with slightly taped threads? Or, is it a type of bolt/bung hex head using a copper crush washer? The last thing I want to do, is damage the tank threads. Anyone? Thank You!

09-29-2021, 07:50 PM	#2
Lawson Cox Senior Member Join Date: May 2010 Location: Above the gnat line in Georgia Posts: 7,009	Re: 34 Gas Tank Drain plug Whatever you do, don't use a blue wrench around that plug. __________________ Life is like a roll of toilet paper. The closer to the end, the faster it goes. It is better to be seen, than viewed. "We sleep safe in our beds because rough men stand ready in the night to visit violence on those who would do us harm".

09-29-2021, 07:54 PM	#3
rich b Senior Member Join Date: May 2010 Location: Minnesota Posts: 1,825	Re: 34 Gas Tank Drain plug Pipe plug.

09-30-2021, 11:17 AM	#4
19Fordy Senior Member Join Date: May 2010 Location: Coral Springs FL Posts: 10,925	Re: 34 Gas Tank Drain plug Yes it is a pipe thread. Use a dab of this sealer and don't over tighten. Most hardware stores have it. I bought some at Auto Zone. https://www.acehardware.com/departme...B&gclsrc=aw.ds Last edited by 19Fordy; 09-30-2021 at 11:37 AM.

09-30-2021, 12:19 PM	#5
cas3 Senior Member Join Date: Jan 2011 Location: sw minnesota Posts: 4,568	Re: 34 Gas Tank Drain plug Like Lawson said, no heat as the threaded boss in riveted on, and soldered to seal. heat, and solder runs out onto floor. dont ask how I know that ! Last edited by cas3; 09-30-2021 at 12:19 PM. Reason: change

09-30-2021, 05:32 PM	#6
d.conrad Senior Member Join Date: Aug 2010 Location: St. Louis, Mo Posts: 359	Re: 34 Gas Tank Drain plug Sponsored Links (Register now to hide all advertisements) Slotted pipe plug

10-01-2021, 04:32 PM	#7
supereal Senior Member Join Date: Jul 2014 Location: Iowa Posts: 1,634	Re: 34 Gas Tank Drain plug Most gas tank "drain plugs" were installed before the tanks were coated with "tern", a solder-like metal, making plug removal likely to damage the tank. Old cars will usually develop pin hole leaks in the top. where they can't be seen, caused by the layer of road grime that builds out of sight. That was the problem with my '47, and putting in a plastic tank was a really good idea.

10-01-2021, 09:41 PM	#8
JM 35 Sedan Senior Member Join Date: May 2010 Location: Near Rising Sun, Maryland Posts: 10,858	Re: 34 Gas Tank Drain plug I've tried several different methods (but never used heat) to remove gas tank drain plugs on various early Ford's, and have never been successful. I usually wind up completely removing the tank, and use the openings for the neck and/or the opening(s) on the top of tank for draining, cleaning, or flushing tank. Or if the tank is found to have serious issues, I replace the tank with a good used or new reproduction. __________________ *John* *"Never give up on what you really want to do. The person with big dreams is more powerful than one with all the facts". Albert Einstein*

10-01-2021, 11:39 PM	#9
cas3 Senior Member Join Date: Jan 2011 Location: sw minnesota Posts: 4,568	Re: 34 Gas Tank Drain plug Agree with JM35, or if the tank is out and you have some skill with a drill you can drill it to the bare minimum of plug left , and remove the last bits with a pick. Then I replace it with a hex head plug so you can get it out next time