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</o:shapelayout></xml><![endif]--></head><body lang=EN-CA link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='mso-fareast-language:EN-US'>Ed is correct, it is the ferrule that does the sealing when it is compressed by the threaded fitting tightening down to the fuel pump housing. The fuel pipe threads into the fuel pump with a 5/16” compression fitting. If replaced, these may be prone to leaking fuel because the original ferrule was .297” to .303” in length whereas most North American ferrules are only .247” to .253” in length. Consequently, the compression fitting often bottoms out before the ferrule is properly compressed. The Roadster Factory sells compression fittings and ferrules that they claim do not have this problem. Also, several years ago, Scott uhring suggested using two ferrules end to end and filed down on the mating surface to get the necessary length.<o:p></o:p></span></p><p class=MsoNormal><img width=242 height=276 style='width:2.525in;height:2.8791in' id="Picture_x0020_1" src="cid:image001.png@01D66FED.44E9E5C0"><span style='mso-fareast-language:EN-US'><o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b><span lang=EN-US>From:</span></b><span lang=EN-US> EDWARD WOODS <fogbro1@comcast.net> <br><b>Sent:</b> August 11, 2020 7:02 AM<br><b>To:</b> Greg Lemon <grglmn@gmail.com>; staffel <staffel@comcast.net><br><b>Cc:</b> Triumphs <triumphs@autox.team.net><br><b>Subject:</b> Re: [TR] TR4 Fuel Delivery Issue & Mod<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Helvetica",sans-serif;color:#333333'>And isn't it the brass "acorn" that seals the connection at the pump, not the threads? ISTR that the original "acorn" is a bit longer than the replacements available which limits compression and can cause a leak. At one time there was someone making a longer "acorn" to solve this problem. <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Helvetica",sans-serif;color:#333333'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Helvetica",sans-serif;color:#333333'>Ed Woods <o:p></o:p></span></p></div><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><p class=MsoNormal> <o:p></o:p></p></blockquote></div></body></html>