Holley fuel fitting

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May 12, 2011 | 12:13 PM

bluovl

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Instructor

Joined: Nov 2006

Posts: 186

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From: Valencia CA

Holley fuel fitting

I have a 67 with a 427/390 and a Holley 3811. My question is if the compression fitting on the fuel line going into the carb should have a gasket. Or should I be using Teflon tape?

Thanks Peter

May 12, 2011 | 12:32 PM

67*427

Burning Brakes

Joined: Mar 2008

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From: Magnolia Texas

No sealer, no tape. Assuming it's a stock fitting, it is a flare fitting and seals without any additional items required.

Steve

Quote:

Originally Posted by bluovl

I have a 67 with a 427/390 and a Holley 3811. My question is if the compression fitting on the fuel line going into the carb should have a gasket. Or should I be using Teflon tape?

Thanks Peter

May 12, 2011 | 12:34 PM

midyearvette

Le Mans Master

Joined: Nov 2008

Posts: 5,691

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From: columbus oh

Quote:

Originally Posted by bluovl

I have a 67 with a 427/390 and a Holley 3811. My question is if the compression fitting on the fuel line going into the carb should have a gasket. Or should I be using Teflon tape?

Thanks Peter

if you are asking about the large bowl fitting, yes it takes a gasket but it is not a compression fitting that know of.....

May 12, 2011 | 12:37 PM

JohnZ

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Joined: Oct 2000

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From: Washington Michigan

Quote:

Originally Posted by bluovl

I have a 67 with a 427/390 and a Holley 3811. My question is if the compression fitting on the fuel line going into the carb should have a gasket. Or should I be using Teflon tape?

Thanks Peter

There's no compression fitting at that fuel inlet connection. The large hex adapter fitting uses a thin circular steel gasket at the fuel bowl inlet side, and the fuel line tube nut uses an SAE flare fitting with no gasket (just like a brake line fitting); it seals at the flare, not in the threads.

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May 13, 2011 | 03:11 PM

67BETE

Pro

Joined: Apr 2006

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From: Worthington Ohio

I know both items are suppose to seal on their own, but we all know that doesn't always happen for a variety of reasons. I have had to use the white thread sealing goop (forget the name) on both to make sure there is no gas leakage. May be overkill, but well worth it in my mind.

Kirk

May 13, 2011 | 03:52 PM

JohnZ

Team Owner

Joined: Oct 2000

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From: Washington Michigan

Quote:

Originally Posted by 67BETE

The TFE white pipe dope (or a little anti-seize or oil) on the threads of the tube nut is helpful in that it reduces thread friction or galling, and you'll get a better mechanical seal at the flare surface with much less torque applied to the tube nut. You're only sealing 6-7 psi, not the 1500 psi you'll see in a brake line.

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