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03-29-2008, 10:11 AM
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CC Member
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Join Date: Mar 2001
Location: Burbank, Calif. USA,
Posts: 121
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AN Fittings Leaking
My oil cooler uses AN fittings going into pipe thread fittings. No matter how firm I tighten it, oil still dribbles out. I'm considering using pipe tape or other thread filler or something. Anyone out there have any suggestions?
Thanks,
Ron
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03-29-2008, 10:28 AM
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Charter Club Cobra Member
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Join Date: Jan 1999
Location: Sublimity,,
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Cobra Make, Engine: My Shell Valley Coupe is here! Now the building begins....
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Is the fitting leaking in the adapter going to the cooler or on the JIC fitting side?
Scott S
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Working as hard as I can every day to double my carbon footprint.
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03-29-2008, 01:31 PM
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CC Member
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Join Date: Mar 2001
Location: Burbank, Calif. USA,
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AN Fittings Leaking
It seems to be leaking where the adaptor is going into the pipe threads of the oil cooler.
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03-29-2008, 01:51 PM
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Join Date: Jul 2006
Location: Ankeny,
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Cobra Make, Engine: Hi tech 427 SC
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I've had leaks through liquid thread sealant-teflon tape works much better.
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03-29-2008, 02:14 PM
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Join Date: Jul 2005
Location: Bartlett,
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Cobra Make, Engine: Everett-Morrison LS1
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If it is leaking at only one fitting,it is a coinsident---if it is leaking at both fittings you probably are using fittings with the wrong kind of threads---tapered pipe, str pipe, British, and/or straight AN.
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03-29-2008, 02:47 PM
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Charter Club Cobra Member
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Join Date: Jan 1999
Location: Sublimity,,
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Cobra Make, Engine: My Shell Valley Coupe is here! Now the building begins....
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Thread tape could work fine there, but I am kinda with Jerry.
You may have a straight AN fitting that is meant to be fit with a o-ring. They will screw into pipe threads and leak.
Scott S
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Working as hard as I can every day to double my carbon footprint.
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03-29-2008, 04:18 PM
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CC Member
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Join Date: Mar 2000
Location: Fairfield, NJ, USA,
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Cobra Make, Engine: A & C, 351W, Tremec 3550. Exiled Member: Club Cranky
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If you have the right fittings I suggest teflon paste instead of the tape.
Roscoe
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Roscoe
"Crisis occurs when women and cattle get excited!"....James Thurber
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03-29-2008, 04:44 PM
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Join Date: Mar 2001
Location: Burbank, Calif. USA,
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Thanks for the input. I did go with the teflon paste instead of tape, with the fear that small pieces of tape could break off into the oil. I'll check tomorrow to see if it leaks.
Thanks again,
Ron
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03-29-2008, 07:13 PM
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Join Date: Feb 2007
Location: Austin,
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Cobra Make, Engine: Lonestar Classics, 302 stroked to 347; Metallic British Racing Green
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I had the same problem...used Teflon tape...worked PERFECTLY!
Glyn
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03-29-2008, 07:21 PM
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Join Date: May 2001
Location: California,
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Cobra Make, Engine: NAF 289 Slabside Early Comp Car with 289 Webers and all the goodies. Cancelling the efforts of several Priuses
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Look at the tapered face on the nipple, for a perfect seal snug the nut down and gently twist the tube back and forth. Then disassemble, there should be a scribed line completely around on the tapered face. Any irregularities are potential leakage spots.
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Rick
As you slide down the Banister of Life, may the splinters never be pointing the wrong way
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