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</o:shapelayout></xml><![endif]--></head><body bgcolor=white lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'>Kees: I wonder whether you can confirm that you really intended below to refer to the experiences of those who have had issues as “some of you claim…”? <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'><o:p> </o:p></span></p><p style='margin-left:.5in'>If the SU-pumps would have been so unreliable as some of you claim, they would not have been used on such a large scale. Many millions of cars have had them in the 1930´s through to the 1990´s, from the humble Morris Minor to Rolls Royce.<o:p></o:p></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'>Sounds like you doubt people’s “claims” to have been stuck on the side of the road, or under a teetering car with traffic passing by – covered in gasoline, or spending time in hotel rooms working on fuel pumps, etc. As I said – just wondering whether you can confirm your intent…<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'><o:p> </o:p></span></p><div><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'>Al Fuller</span><o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'>'65 BJ-8</span><o:p></o:p></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'>'85 Rx-7</span><o:p></o:p></p></div><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'><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 style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:windowtext'>From:</span></b><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:windowtext'> Healeys [<a href="mailto:healeys-bounces@autox.team.net">mailto:healeys-bounces@autox.team.net</a>] <b>On Behalf Of </b>Kees Oudesluijs<br><b>Sent:</b> Thursday, November 29, 2018 5:15 AM<br><b>To:</b> <a href="mailto:healeys@autox.team.net">healeys@autox.team.net</a><br><b>Subject:</b> Re: [Healeys] Fuel pumps (AGAIN!)<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p>It is not uncommon that a car´s service sheet also included the SU-pump (clean the points every service), e.g. Lotus Eclat/Elite. However I never did and I have had no problems. I used my car as a daily driver but it had to live outside all year. Nowadays the car is pampered in a heated garage and is mainly driven when the weather is suitable for open top driving except for long trips abroad.<o:p></o:p></p><p>The pressure delivered by an SU-pump depends on where the pump is situated. If it is fitted under the bonnet it should be a so called low-pressure or suction pump delivering 1,8psi (e.g. some Austin-Healey Sprite/Mg Midget). You can often recognise this pump by the 2BA screw (same size as the screws that hold the coil housing to the pump body) on the coil housing for the earth spade. If the pump is fitted near the petrol tank it should be a so-called pressure pump delivering 2,7psi (e.g. MGB) or 3,8psi (Austin-Healey 3000, Jaguar 6-cyl. cars MkII, E-type etc., Triumph Stag, Jensen-Healey a.o.). The high pressure pumps can be recognised by a smaller 4BA screw for the earth spade. The pressure is fixed and is controlled by the spring fitted under the diaphragm. All pumps are identical as far as the coil housing, points system, diaphragm are concerned. The differences are in the pump body but this has no effect on the pressure, mainly on the variation of delivery pressure and flow rate. Some cars have the h.p. pump fitted on the chassis open to the elements (e.g. MGB, A-H), others have it protected in the boot (e.g. J-H).<o:p></o:p></p><p>There are three types of spring, the low pressure 1,8psi spring can be easily recognised as the wire is rather thin and it has more coils, the 2,7 an3,8psi springs have less coils and look identical to each other but the 3,8psi spring is slightly thicker and should have a (faint) dab of red paint.<o:p></o:p></p><p>If the SU-pumps would have been so unreliable as some of you claim, they would not have been used on such a large scale. Many millions of cars have had them in the 1930´s through to the 1990´s, from the humble Morris Minor to Rolls Royce.<o:p></o:p></p><p>Sure, the early ones did wear the points rather quickly because of arcing/spark erosion, but this was counteracted by proper maintenance which was usually every 1000 to 3000miles in the 30´s up to the 50´s. The wear was significantly reduced by using a simple capacitor (very like the capacitor in the points distributor), then a diode and lately Burlen fitting a transil. The pumps are dual polarity except when a diode is fitted. <o:p></o:p></p><p>However spark erosion is not the main problem, that is electrolytic corrosion due to lack of use and dampish conditions under the cover because of improper ventilation like no tubes connected from the pump to a dry area of the car (boot) or no rubber band or friction tape on the joint of the cover and coil housing or damp storage.<o:p></o:p></p><p>I am not sure if the quality of the points you buy today is less than the old ones. I have never used them. I still have NOS points to replace worn points, but more often than once cleaning and repolishing the old points will do.<o:p></o:p></p><p><o:p> </o:p></p><p>Kees Oudesluijs<o:p></o:p></p><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><p>Not trying to reinvent the wheel, David, just get a fuel pump that lasts. Others have had good service from points pumps like you, but I haven't. I'm not doing anything unusual; if you get them installed and they don't leak and they run that's about all you can do--there's no trick or secret to installing them that I know of. Mine just keep failing, with between a few hundred and up to 15K miles of service (this over about 140,000 miles I've put on my BJ8). I will say I have driven through some serious downpours, so water entry into the switching compartment could be a problem, but some of the failures didn't get drowned.<o:p></o:p></p><p>The points can be problematic, else SU wouldn't have gone from:<o:p></o:p></p><p>1) no arc suppression<o:p></o:p></p><p>2) capacitor arc suppression<o:p></o:p></p><p>3) diode arc suppression<o:p></o:p></p><p>That is to say, SU wouldn't have gone to the expense and labor of installing capacitors and diodes if there wasn't some issue with reliability or longevity. I tried all three, with results as noted. I've installed the out-of-the-box, rebuilt and adjusted them myself, installed SS switching mechanism, used capacitors, diodes, TVSes, transistors and installed SU electronic out-of-the box with predictable results. I do recall your dad either writing or saying that they used to take the pumps out and service them--cleaning the points and adjusting the mechanism I presume--at 15K mile service when he worked at BMC (or was it BL, don't recall), so they aren't typically bulletproof forever. <o:p></o:p></p><p>Maybe I pissed the SU gods off somehow; though both my sets of SU carbs have been all but bulletproof, and the basic points-type in my BN2 has worked for a few hundred miles.<o:p></o:p></p><p>Bob<o:p></o:p></p><div><p class=MsoNormal>On 11/28/2018 9:50 AM, <a href="mailto:healeydoc@gmail.com">healeydoc@gmail.com</a> wrote:<o:p></o:p></p></div><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><div><div><div><p class=MsoNormal><span style='font-family:"Century",serif'>I do not understand the problem with the SU pump that everyone feels that they have to re invent the wheel. I have using the standard SU pump with points in my Healey for almost 75000 miles and never had a failure. <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-family:"Century",serif'> <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-family:"Century",serif'>We also have been installing the standard SU points pump here at the shop on every car we do for over 40 years <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-family:"Century",serif'>Everything from Healey’s, MG’s and Jaguar’s and had very few failures.<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-family:"Century",serif'> <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-family:"Century",serif'> <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-family:"Century",serif'> <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-family:"Century",serif'>David Nock<br></span><a href="mailto:healeydoc@sbcglobal.net"><span style='font-family:"Century",serif'>healeydoc@sbcglobal.net</span></a><span style='font-family:"Century",serif'><br>209 948 8767<br></span><a href="http://www.britishcarspecialists.com"><span style='font-family:"Century",serif'>www.britishcarspecialists.com</span></a><span style='font-family:"Century",serif'><br><br>Help us have our Founder Norman Nock inducteed into the <br>British Sportscar Hall of Fame, You can vote for your favorites <br>by visiting the site at.<br></span><a href="http://www.britishsportscarhall.org"><span style='font-family:"Century",serif'>www.britishsportscarhall.org</span></a><span style='font-family:"Century",serif'><o:p></o:p></span></p></div><p class=MsoNormal><span style='font-family:"Century",serif'><o:p> </o:p></span></p></div></div></blockquote><p class=MsoNormal><br><br><o:p></o:p></p><pre>_______________________________________________<o:p></o:p></pre><pre>Support Team.Net <a href="http://www.team.net/donate.html">http://www.team.net/donate.html</a><o:p></o:p></pre><pre>Suggested annual donation $12.75<o:p></o:p></pre><pre><o:p> </o:p></pre><pre>Archive: <a href="http://www.team.net/pipermail/healeys">http://www.team.net/pipermail/healeys</a> <a href="http://autox.team.net/archive">http://autox.team.net/archive</a><o:p></o:p></pre><pre><o:p> </o:p></pre><pre><a href="mailto:Healeys@autox.team.net">Healeys@autox.team.net</a><o:p></o:p></pre><pre><a href="http://autox.team.net/mailman/listinfo/healeys">http://autox.team.net/mailman/listinfo/healeys</a><o:p></o:p></pre><pre><o:p> </o:p></pre><pre>Unsubscribe/Manage: <a href="http://autox.team.net/mailman/options/healeys/coudesluijs@chello.nl">http://autox.team.net/mailman/options/healeys/coudesluijs@chello.nl</a><o:p></o:p></pre><pre><o:p> </o:p></pre></blockquote></div></body></html>