{"id":38947,"date":"2017-04-27T12:01:55","date_gmt":"2017-04-27T19:01:55","guid":{"rendered":"http:\/\/www.racingjunk.com\/news\/?p=38947"},"modified":"2017-04-27T12:03:08","modified_gmt":"2017-04-27T19:03:08","slug":"38947","status":"publish","type":"post","link":"https:\/\/www.racingjunk.com\/news\/38947\/","title":{"rendered":"Plumbing 101: Part 1"},"content":{"rendered":"<figure id=\"attachment_38948\" aria-describedby=\"caption-attachment-38948\" style=\"width: 640px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" data-attachment-id=\"38948\" data-permalink=\"https:\/\/www.racingjunk.com\/news\/38947\/1-1-4\/\" data-orig-file=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2017\/04\/1-1-1.jpg\" data-orig-size=\"3872,2592\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;7.1&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;NIKON D80&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;1490005788&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;70&quot;,&quot;iso&quot;:&quot;100&quot;,&quot;shutter_speed&quot;:&quot;0.066666666666667&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;1&quot;}\" data-image-title=\"1-1\" data-image-description=\"\" data-image-caption=\"&lt;p&gt;In the distant past, this was \u201cstate-of-the-art\u201d when it came to plumbing. Today, we highly recommend you stay away from rubber hose and worm clamps.  &lt;\/p&gt;\n\" data-medium-file=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2017\/04\/1-1-1-300x201.jpg\" data-large-file=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2017\/04\/1-1-1-1024x685.jpg\" class=\"wp-image-38948\" src=\"http:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2017\/04\/1-1-1-1024x685.jpg\" alt=\"In the distant past, this was \u201cstate-of-the-art\u201d when it came to plumbing. Today, we highly recommend you stay away from rubber hose and worm clamps. \" width=\"640\" height=\"428\" srcset=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2017\/04\/1-1-1-1024x685.jpg 1024w, https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2017\/04\/1-1-1-300x201.jpg 300w, https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2017\/04\/1-1-1-768x514.jpg 768w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><figcaption id=\"caption-attachment-38948\" class=\"wp-caption-text\">In the distant past, this was \u201cstate-of-the-art\u201d when it came to plumbing. Today, we highly recommend you stay away from rubber hose and worm clamps.<\/figcaption><\/figure>\n<p>Decades ago, the task of plumbing a car usually meant you went to the local auto parts store, bought a roll of fuel safe rubber hose along with a handful of common brass fittings.\u00a0 You hooked it all together with \u201cfits-all\u201d worm gear clamps.\u00a0 An hour or two later you had a \u201crace car\u201d fuel system done. It wasn\u2019t exactly safe; it wasn\u2019t exactly pretty and it wasn\u2019t exactly efficient. But then hot rodders and racers discovered aircraft plumbing. It proved very safe, it proved very good-looking and it turned out to be extremely efficient.\u00a0 Our world forever changed (and it\u2019s still evolving, but we\u2019ll get to that later).<\/p>\n<figure id=\"attachment_38949\" aria-describedby=\"caption-attachment-38949\" style=\"width: 640px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" data-attachment-id=\"38949\" data-permalink=\"https:\/\/www.racingjunk.com\/news\/38947\/1-2-5\/\" data-orig-file=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2017\/04\/1-2-1-e1493319614184.jpg\" data-orig-size=\"640,398\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;3.5&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;NIKON D80&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;1443632087&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;18&quot;,&quot;iso&quot;:&quot;200&quot;,&quot;shutter_speed&quot;:&quot;0.016666666666667&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;1&quot;}\" data-image-title=\"1-2\" data-image-description=\"\" data-image-caption=\"&lt;p&gt;Instead of rubber hose, go straight to high performance AN plumbing. Once you get the hang of working with the various hoses and fittings you\u2019ll never turn back.&lt;\/p&gt;\n\" data-medium-file=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2017\/04\/1-2-1-e1493319614184-300x187.jpg\" data-large-file=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2017\/04\/1-2-1-1024x685.jpg\" class=\"wp-image-38949\" src=\"http:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2017\/04\/1-2-1-1024x685.jpg\" alt=\"Instead of rubber hose, go straight to high performance AN plumbing. Once you get the hang of working with the various hoses and fittings you\u2019ll never turn back.\" width=\"640\" height=\"428\" \/><figcaption id=\"caption-attachment-38949\" class=\"wp-caption-text\">Instead of rubber hose, go straight to high performance AN plumbing. Once you get the hang of working with the various hoses and fittings you\u2019ll never turn back.<\/figcaption><\/figure>\n<p>Before we go any further, let\u2019s start from the very beginning.\u00a0 Aircraft (AN) hose really began the in mid 1930\u2019s.\u00a0 At that time, a universal military standard was developed to more easily identify and categorize hardware, tubing, hose and hose (end) fittings.\u00a0 This standard became A-N or &#8220;Army-Navy&#8221; (some figure it was &#8220;Air Force-Navy&#8221; or \u201cAir Corps-Navy, but it doesn\u2019t matter).\u00a0 The A-N standard provides us a universally accepted method of identification and standard specifications for aircraft fittings, hose and even hardware.<\/p>\n<figure id=\"attachment_38950\" aria-describedby=\"caption-attachment-38950\" style=\"width: 620px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" data-attachment-id=\"38950\" data-permalink=\"https:\/\/www.racingjunk.com\/news\/38947\/1-3-4\/\" data-orig-file=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2017\/04\/1-3-1.jpg\" data-orig-size=\"3872,2592\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;4.5&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;NIKON D80&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;1490006042&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;70&quot;,&quot;iso&quot;:&quot;200&quot;,&quot;shutter_speed&quot;:&quot;0.016666666666667&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;1&quot;}\" data-image-title=\"1-3\" data-image-description=\"\" data-image-caption=\"&lt;p&gt;The hard line in the photo is \u00bd-inch. Meanwhile the AN hose is -8AN. They\u2019re not quite the same size \u2013 AN is slightly smaller on the ID than hardline.  Keep that in mind when selecting hose for something like a fuel system.&lt;\/p&gt;\n\" data-medium-file=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2017\/04\/1-3-1-300x201.jpg\" data-large-file=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2017\/04\/1-3-1-1024x685.jpg\" class=\"wp-image-38950\" src=\"http:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2017\/04\/1-3-1-1024x685.jpg\" alt=\"The hard line in the photo is \u00bd-inch. Meanwhile the AN hose is -8AN. They\u2019re not quite the same size \u2013 AN is slightly smaller on the ID than hardline. Keep that in mind when selecting hose for something like a fuel system.\" width=\"620\" height=\"415\" srcset=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2017\/04\/1-3-1-1024x685.jpg 1024w, https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2017\/04\/1-3-1-300x201.jpg 300w, https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2017\/04\/1-3-1-768x514.jpg 768w\" sizes=\"auto, (max-width: 620px) 100vw, 620px\" \/><figcaption id=\"caption-attachment-38950\" class=\"wp-caption-text\">The hard line in the photo is \u00bd-inch. Meanwhile the AN hose is -8AN. They\u2019re not quite the same size \u2013 AN is slightly smaller on the ID than hardline. Keep that in mind when selecting hose for something like a fuel system.<\/figcaption><\/figure>\n<p>&nbsp;<\/p>\n<p>Following WW2 early rodders and racers discovered military surplus \u2013 it was big (and cheap) after the war.\u00a0 The truth is, the use of aircraft hose and fittings was a very good practice in the late forties, and it\u2019s still a good practice today.\u00a0 Within the A-N system, the various components are identified by way of a specification number and a series of letters and dashes identifying the size of the component.\u00a0 When it comes to hose and fittings, the following chart depicts the relationship between A-N numbers, <u>metal tube<\/u> outside diameters (OD&#8217;s) and thread size:<\/p>\n<figure id=\"attachment_38951\" aria-describedby=\"caption-attachment-38951\" style=\"width: 620px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" data-attachment-id=\"38951\" data-permalink=\"https:\/\/www.racingjunk.com\/news\/38947\/1-4-4\/\" data-orig-file=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2017\/04\/1-4-1.jpg\" data-orig-size=\"3872,2592\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;4.8&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;NIKON D80&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;1490006384&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;145&quot;,&quot;iso&quot;:&quot;100&quot;,&quot;shutter_speed&quot;:&quot;0.066666666666667&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;1&quot;}\" data-image-title=\"1-4\" data-image-description=\"\" data-image-caption=\"&lt;p&gt;Plenty of aftermarket parts are sized with pipe threads. Pipe threads incorporate a tapered joint in order to seal. You\u2019ll always encounter pipe thread connections on automotive parts.  There\u2019s no getting around it.&lt;\/p&gt;\n\" data-medium-file=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2017\/04\/1-4-1-300x201.jpg\" data-large-file=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2017\/04\/1-4-1-1024x685.jpg\" class=\"wp-image-38951\" src=\"http:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2017\/04\/1-4-1-1024x685.jpg\" alt=\"Plenty of aftermarket parts are sized with pipe threads. Pipe threads incorporate a tapered joint in order to seal. You\u2019ll always encounter pipe thread connections on automotive parts. There\u2019s no getting around it.\" width=\"620\" height=\"415\" srcset=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2017\/04\/1-4-1-1024x685.jpg 1024w, https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2017\/04\/1-4-1-300x201.jpg 300w, https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2017\/04\/1-4-1-768x514.jpg 768w\" sizes=\"auto, (max-width: 620px) 100vw, 620px\" \/><figcaption id=\"caption-attachment-38951\" class=\"wp-caption-text\">Plenty of aftermarket parts are sized with pipe threads. Pipe threads incorporate a tapered joint in order to seal. You\u2019ll always encounter pipe thread connections on automotive parts. There\u2019s no getting around it.<\/figcaption><\/figure>\n<p><u>AN Number, Tube Size &amp; Corresponding Thread Size<\/u><\/p>\n<p>&nbsp;<\/p>\n<p>A-N SIZE\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 METAL TUBE SIZE\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 THREAD SIZE<\/p>\n<p>_______________________________________________________________________<\/p>\n<p>&nbsp;<\/p>\n<p><em>2\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 1\/8-inch\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 5\/16-24 SAE<\/em><\/p>\n<p>3\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 3\/16-inch\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 3\/8-24\u00a0\u00a0 SAE<\/p>\n<p>4\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 1\/4-inch\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 7\/16-20 SAE<\/p>\n<p><em>5\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 5\/16-inch\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 1\/2-20\u00a0\u00a0 SAE<\/em><\/p>\n<p>6\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 3\/8-inch\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 9\/16-18 SAE<\/p>\n<p>8\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 1\/2-inch\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 3\/4-16\u00a0\u00a0 SAE<\/p>\n<p>10\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 5\/8-inch\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 7\/8-14\u00a0\u00a0 SAE<\/p>\n<p>12\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 3\/4-inch\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 1-1\/16-12 SAE<\/p>\n<p>16\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 1-inch\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 1-5\/16-12 SAE<\/p>\n<p>20\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 1-1\/4-inch\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 1-5\/8-12 SAE<\/p>\n<p>24\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 1-1\/2-inch\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 1-7\/8-12 SAE<\/p>\n<p>28\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 1-3\/4-inch\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 2-1\/4-12 SAE<\/p>\n<p>32\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 2-inch\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 2-1\/2-12 SAE<\/p>\n<p><strong><em>\u00a0<\/em><\/strong><\/p>\n<p><strong><em>NOTE: <\/em><\/strong><em>\u00a0You\u2019ll note A-N sizes 2 and 5 on the above chart.\u00a0 Fittings and hose in these sizes are next to impossible to find or are prohibitively expensive.\u00a0 Because of this it&#8217;s not really a viable hose\/fitting size for automotive applications. <\/em><\/p>\n<figure id=\"attachment_38952\" aria-describedby=\"caption-attachment-38952\" style=\"width: 620px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" data-attachment-id=\"38952\" data-permalink=\"https:\/\/www.racingjunk.com\/news\/38947\/1-5-4\/\" data-orig-file=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2017\/04\/1-5-1.jpg\" data-orig-size=\"3872,2592\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;4&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;NIKON D80&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;1490006509&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;70&quot;,&quot;iso&quot;:&quot;200&quot;,&quot;shutter_speed&quot;:&quot;0.016666666666667&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;1&quot;}\" data-image-title=\"1-5\" data-image-description=\"\" data-image-caption=\"&lt;p&gt;Pipe thread joints leak if they aren\u2019t sealed. As a result, you have to use Teflon tape or Teflon paste to make the seal.  Earl\u2019s sells both tape and paste.&lt;\/p&gt;\n\" data-medium-file=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2017\/04\/1-5-1-300x201.jpg\" data-large-file=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2017\/04\/1-5-1-1024x685.jpg\" class=\"wp-image-38952\" src=\"http:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2017\/04\/1-5-1-1024x685.jpg\" alt=\"Pipe thread joints leak if they aren\u2019t sealed. As a result, you have to use Teflon tape or Teflon paste to make the seal. Earl\u2019s sells both tape and paste.\" width=\"620\" height=\"415\" srcset=\"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2017\/04\/1-5-1-1024x685.jpg 1024w, https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2017\/04\/1-5-1-300x201.jpg 300w, https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2017\/04\/1-5-1-768x514.jpg 768w\" sizes=\"auto, (max-width: 620px) 100vw, 620px\" \/><figcaption id=\"caption-attachment-38952\" class=\"wp-caption-text\">Pipe thread joints leak if they aren\u2019t sealed. As a result, you have to use Teflon tape or Teflon paste to make the seal. Earl\u2019s sells both tape and paste.<\/figcaption><\/figure>\n<p>So far so good but the threads are straight.\u00a0 What\u2019s up with that?\u00a0 Aircraft or AN fittings seal by way of a cone shape machined into the respective ends of the fittings.\u00a0 One end is \u201cmale\u201d while the other is \u201cfemale\u201d.\u00a0 Adjoined AN ports do not require any form of sealant in order to function without leaks.\u00a0 On the other hand, almost all automotive and motorcycle applications use pipe threads.\u00a0 Because of this, parts with pipe threads aren&#8217;t compatible with the A-N fittings and adapters must be used.\u00a0 Rather than confusing the issue, companies such as Earl&#8217;s Performance, and others never size fittings by the thread size.\u00a0 Instead, they simply name the fitting size by the dash number (A-N number or size).\u00a0 Because of this, a No. 8 fitting is simply that &#8212; a dash 8 (or &#8220;number&#8221; 8) fitting.\u00a0 Adapters, required to fit pipe thread parts to AN parts are named for their application.\u00a0 For example, to simplify the transition from NPT (National Pipe Thread) to A-N &#8220;dash&#8221; sizes, something like a straight adapter fitting with 3\/8-pipe on one end and a -8 thread on the other, is termed \u201c3\/8-inch NPT to No. 8\u201d.\u00a0 If you have difficulty translating hose size into fractions, try this:\u00a0 Place the A-N size over sixteen and reduce the number (or divide).\u00a0 Here\u2019s an example:<\/p>\n<p>&nbsp;<\/p>\n<p><u>#8 hose<\/u>\u00a0\u00a0 = 1\/2-inch or 0.5-inch<\/p>\n<p>16<\/p>\n<p>&nbsp;<\/p>\n<p>When plumbing a hot rod or race car, you\u2019ll always keep in mind the relationship between pipe threads and dash numbers:\u00a0 A large percentage of components (OEM and aftermarket) don&#8217;t have A-N ports.\u00a0 Instead, they\u2019re based on tapered pipe thread.\u00a0 The truth is pipe thread is the bane of our hobby.\u00a0 Here\u2019s why:\u00a0 &#8220;National Tapered Pipe&#8221; thread sizes refer to the inside diameter of a piece of pipe that receives the male end.\u00a0 It&#8217;s designed for an interference fit between the male and female threads (hence the taper in the two parts).\u00a0 Theoretically, this interference fit within the taper is designed to stop leaks.\u00a0 The trouble is, the theory doesn\u2019t work.\u00a0 When joining <u>any<\/u> pipe thread, you must use Teflon tape or paste on the threads to prevent leaks.\u00a0 And FYI, when it comes to choosing between Teflon tape and Teflon paste, the paste is often easier to use (but it\u2019s definitely messier).\u00a0 The following chart shows the various sizes of pipe threads along with a comparable (closest) A-N fitting size:<\/p>\n<p>&nbsp;<\/p>\n<p><u>Pipe Thread Sizes Versus AN Fitting Sizes<\/u><\/p>\n<p>&nbsp;<\/p>\n<p>Pipe \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Threads\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Theoretical \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0Closest<\/p>\n<p>Thread Size\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Per Inch\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 I.D. of Fitting \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 A-N Fitting To Size<\/p>\n<p>________________________________________________________________<\/p>\n<p>&nbsp;<\/p>\n<p>1\/16&#8243;\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0 27\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0 1\/16&#8243;\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 N\/A<\/p>\n<p>1\/8&#8243;\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a027\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0 1\/8&#8243;\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 #4<\/p>\n<p>1\/4&#8243;\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a018\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0 1\/4&#8243;\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 #6<\/p>\n<p>3\/8&#8243;\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a018\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0 3\/8&#8243;\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 #8<\/p>\n<p>1\/2&#8243;\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a014\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a01\/2&#8243;\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 #10<\/p>\n<p>3\/4&#8243;\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a014\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0 3\/4&#8243;\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 #12<\/p>\n<p>1&#8243;\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0 11-1\/2\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0 1&#8243;\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 #16<\/p>\n<p>1-1\/4&#8243;\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0 11-1\/2\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0 1-1\/4&#8243;\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 #20<\/p>\n<p>1-1\/2&#8243;\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0 11-1\/2\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0 1-1\/2&#8243;\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 #24<\/p>\n<p>2&#8243;\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0 11-1\/2\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0 2&#8243;\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 #32<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<div class=\"mh-excerpt\"><p>Wayne Scraba shows you what kind of plumbing you should run on your ride in part 1 of this 4 part series. <\/p>\n<\/div>","protected":false},"author":20,"featured_media":38949,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[5028,5008,17,11,3470],"tags":[281,5303,4764,321],"class_list":["post-38947","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-fuel-delivery","category-engine","category-guest-column","category-how-tos","category-news","tag-how-to","tag-plumbing","tag-tech","tag-wayne-scraba"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/www.racingjunk.com\/news\/wp-content\/uploads\/2017\/04\/1-2-1-e1493319614184.jpg","jetpack_shortlink":"https:\/\/wp.me\/s42YSK-38947","jetpack_sharing_enabled":true,"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/www.racingjunk.com\/news\/wp-json\/wp\/v2\/posts\/38947","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.racingjunk.com\/news\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.racingjunk.com\/news\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.racingjunk.com\/news\/wp-json\/wp\/v2\/users\/20"}],"replies":[{"embeddable":true,"href":"https:\/\/www.racingjunk.com\/news\/wp-json\/wp\/v2\/comments?post=38947"}],"version-history":[{"count":2,"href":"https:\/\/www.racingjunk.com\/news\/wp-json\/wp\/v2\/posts\/38947\/revisions"}],"predecessor-version":[{"id":38955,"href":"https:\/\/www.racingjunk.com\/news\/wp-json\/wp\/v2\/posts\/38947\/revisions\/38955"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.racingjunk.com\/news\/wp-json\/wp\/v2\/media\/38949"}],"wp:attachment":[{"href":"https:\/\/www.racingjunk.com\/news\/wp-json\/wp\/v2\/media?parent=38947"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.racingjunk.com\/news\/wp-json\/wp\/v2\/categories?post=38947"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.racingjunk.com\/news\/wp-json\/wp\/v2\/tags?post=38947"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}