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Re: o rings for steel gas lines to carbs?
Posted by: VairKing ()
Date: January 04, 2014 06:06AM

So to summarize this thread (which I found VERY interesting btw)

The solutions here are to fix a worn flair seat. Not the line. If there is an issue with the line or the flared end of a line, it should be replaced with new. If the issue is in the seat where the flare nut threads into, one of two things can be done. This seat wears over time since it is made of a soft material and the line that seats into it is steel.

O rings should only be used in an emergency situation to fix a leaky fuel line. Flair fittings should only be tightened with fingers, no wrench, or they will wreck the o ring. The problem here is that the flare nut could shake loose.

Copper or Aluminum gaskets spec'ed above can be bought and used to fill the imperfections in the flare seat. This seems to be the best permanent fix.

Thanks for the info and discussion guys!

_________________________________________
Ryan Counterman (Moderator)
1965 Corsa Kelmark V8 ///1965 Monza Sedan 110/PG /// Ultimate Corvair Hauler/// Don Eichstaedt's 1965 Corsa Racecar
West Michigan Corvair Club /// 1966 Corsa GTP Convertible Mid Engine 3.8L Supercharged

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Re: o rings for steel gas lines to carbs?
Posted by: azdave ()
Date: January 04, 2014 06:15AM

66cv8 Wrote:
-------------------------------------------------------
> They look easy to make. Buy some copper tube flare
> it and cut em off, no brainer.

True. If you visit the threads I linked you will see I previously showed how I made my own with a simple hand punch.

Having said that, I would rather buy them from now on and get some that are perfectly sized, annealed and ready to use. You can find the Parker parts on Amazon or a local store.

Dave W. / Gilbert Arizona
65 Corsa 140/4
66 Corsa 140/4
66 Corsa 140/4 w/factory A/C
66 Corsa 455 Toro V8
65 Monza Convertible 110/4
66 Monza Convertible 140/4 A/C
65 Monza 4DR 140/PG w/factory A/C
65 Monza 4DR EJ20T/5



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Re: o rings for steel gas lines to carbs?
Posted by: flamingchariots ()
Date: January 04, 2014 01:49PM

Quote
VairKing
If the issue is in the seat where the flare nut threads into, one of two things can be done. This seat wears over time since it is made of a soft material and the line that seats into it is steel.
...O rings...or...Copper or Aluminum gaskets...


A third choice is to replace the fuel inlet nut (seat) with a new one for $11.

[www.corvair.com]

Diagram on page 55.
[www.corvair.com]

Kevin
Medina, OH

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Re: o rings for steel gas lines to carbs?
Posted by: azdave ()
Date: January 04, 2014 04:52PM

flamingchariots Wrote:
-------------------------------------------------------
> A third choice is to replace the fuel inlet nut
> (seat) with a new one for $11.

Yes, but on a 140 for instance, you may need four of those plus the three brass T-blocks and the brass 5/16 fuel line adapter going into the pump. That adds up quickly.

Dave W. / Gilbert Arizona
65 Corsa 140/4
66 Corsa 140/4
66 Corsa 140/4 w/factory A/C
66 Corsa 455 Toro V8
65 Monza Convertible 110/4
66 Monza Convertible 140/4 A/C
65 Monza 4DR 140/PG w/factory A/C
65 Monza 4DR EJ20T/5



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Re: o rings for steel gas lines to carbs?
Posted by: VairKing ()
Date: January 04, 2014 05:19PM

It seems like they would make a tool that could recut that seat surface. Maybe this is what I am thinking of maybe not.

[www.tristareng.com]

_________________________________________
Ryan Counterman (Moderator)
1965 Corsa Kelmark V8 ///1965 Monza Sedan 110/PG /// Ultimate Corvair Hauler/// Don Eichstaedt's 1965 Corsa Racecar
West Michigan Corvair Club /// 1966 Corsa GTP Convertible Mid Engine 3.8L Supercharged




Edited 1 time(s). Last edit at 01/04/2014 05:21PM by VairKing.

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Re: o rings for steel gas lines to carbs?
Posted by: Vairismo ()
Date: January 04, 2014 07:20PM

Not saying you should, but I have taken the hole (3/8") that did not get removed from a stock paper gasket, removed it, punched a hole in the
center with a .22 or .17 rimfire shell, and used it in the flare joint for better sealing when they leak.
Good for short term use anyway.

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Re: o rings for steel gas lines to carbs?
Posted by: MattNall ()
Date: January 06, 2014 01:53PM

.

MODERATOR
Sea Mountain, between Charleston Harbor and Coos Bay! SW Oregon Coast
Click HERE for My Website...Click HERE for My TechPages!
...............110-PG.................................................Webered-Turbo

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Follow up to gas line o ring thread
Posted by: nnsquared ()
Date: January 06, 2014 01:43PM

I just installed 2 copper flare gaskets to replace my dreaded and dangerous O rings. $7 and change for 10. Deciding factor was cost and availability of less than 50 Viton O rings. Got the flares from local Grainger store.

May test them at track day Saturday at NJMP. Any of you tried to go real fast on a track at about 20 degrees F?

Regards,
Kerwin,
Newtown Square, PA 19073

65 Monza 110 PG, Stinger wannabe SW 001;
has moved on to club member. Photo will stay.

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