The Ford Barn

marc hildebrant · 09-15-2017, 02:19 PM

Group,

The GAV brass holder leaks where it screws into the Zenith carb. This is the part that the GAV needle valve screws into.

Can I use Teflon tape on the threads to stop the gas leak ? Its a very small leak.

Marc

mhsprecher · 09-15-2017, 02:34 PM

I think the answer to that is no.

I believe that gasoline will deteriorate white teflon tape. Some use the yellow teflon tape. Fixing what is causing the leak is probably best. I have also heard that there is a teflon paste, but if the tape deteriorates, why wouldn't the tape?

Tom Endy · 09-15-2017, 03:09 PM

I have been using a product called Gasoila E-Seal on the GAV threads. I believe someone on this forum recommended it. It seems to work. You will have to look it up on line. It leaves a green deposit on the threads.

I had been using the white Teflon tape on the GAV threads for years with good results until one day a small piece of the tape broke off and ended up at the tip of the cap jet.

Tom Endy

Benson · 09-15-2017, 03:41 PM

... erased "BS"

Smog Tech · 09-15-2017, 03:44 PM

I also use Gasoila E-Seal. Works good for sealing threads that see the E-10 we have in California.

Big hammer · 09-15-2017, 04:48 PM

Sponsored Links (Register now to hide all advertisements)

NO........... Teflon tape is not for automotive work, period!

redmodelt · 09-15-2017, 10:47 PM

I use white Teflon tape on my Model T spark plugs all the time!

Permatex make a thread sealer, come in a small white tube, no issues with it and gas or oil that I have seen.
There is noting wrong with using the Teflon tape on pipes or fitting related to the cooling system.

johnbuckley · 09-16-2017, 10:13 AM

I have used teflon tape (PTFE tape over here) for many years on GAV threads, It has always sealed successfully and I have never had problems.

wingski · 09-16-2017, 10:24 AM

Wow, it's nice to see a direct answer without any B.S.

[email protected] · 09-16-2017, 03:11 PM

Never use teflon tape on A carbs. Little pieces will work there way to the bowl and clog up the jets and everything between. Replace the GAV if worn. Last resort would be Permatex if case is issue.

09-15-2017, 02:19 PM	#1
marc hildebrant Senior Member Join Date: May 2010 Location: Cape Cod Posts: 1,128	Teflon Tape On GAV Threads? Group, The GAV brass holder leaks where it screws into the Zenith carb. This is the part that the GAV needle valve screws into. Can I use Teflon tape on the threads to stop the gas leak ? Its a very small leak. Marc

09-15-2017, 02:34 PM	#2
mhsprecher Senior Member Join Date: Aug 2012 Location: Takoma Park, MD Posts: 2,817	Re: Teflon Tape On GAV Threads? I think the answer to that is no. I believe that gasoline will deteriorate white teflon tape. Some use the yellow teflon tape. Fixing what is causing the leak is probably best. I have also heard that there is a teflon paste, but if the tape deteriorates, why wouldn't the tape?

09-15-2017, 03:41 PM	#4
Benson Senior Member Join Date: May 2010 Posts: 2,599	Re: Teflon Tape On GAV Threads? ... erased "BS" Last edited by Benson; 09-16-2017 at 12:20 PM. Reason: erased "BS".

09-15-2017, 03:44 PM	#5
Smog Tech Senior Member Join Date: Jan 2014 Location: Arcadia, CA Posts: 145	Re: Teflon Tape On GAV Threads? I also use Gasoila E-Seal. Works good for sealing threads that see the E-10 we have in California.

09-15-2017, 04:48 PM	#6
Big hammer Senior Member Join Date: Jun 2014 Location: Land of Lincoln Posts: 3,131	Re: Teflon Tape On GAV Threads? Sponsored Links (Register now to hide all advertisements) NO........... Teflon tape is not for automotive work, period! __________________ Don't force it with a little hammer tap, tap, tap get a bigger hammer tap done

09-15-2017, 10:47 PM	#7
redmodelt Senior Member Join Date: May 2010 Location: Portland OR Posts: 6,342	Re: Teflon Tape On GAV Threads? I use white Teflon tape on my Model T spark plugs all the time! Permatex make a thread sealer, come in a small white tube, no issues with it and gas or oil that I have seen. There is noting wrong with using the Teflon tape on pipes or fitting related to the cooling system. __________________ I know the voices aren't real but damn they have some good ideas!

09-16-2017, 10:13 AM	#8
johnbuckley Senior Member Join Date: Jul 2010 Location: United Kingdom Posts: 1,443	Re: Teflon Tape On GAV Threads? I have used teflon tape (PTFE tape over here) for many years on GAV threads, It has always sealed successfully and I have never had problems.

09-16-2017, 10:24 AM	#9
wingski Senior Member Join Date: Jul 2017 Location: Cave Junction, Oregon Posts: 432	Re: Teflon Tape On GAV Threads? Wow, it's nice to see a direct answer without any B.S.

09-16-2017, 03:11 PM	#10
[email protected] Junior Member Join Date: Apr 2016 Posts: 4	Re: Teflon Tape On GAV Threads? Never use teflon tape on A carbs. Little pieces will work there way to the bowl and clog up the jets and everything between. Replace the GAV if worn. Last resort would be Permatex if case is issue.