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</o:shapelayout></xml><![endif]--></head><body 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'>When I restored my BT7 I put in a high efficiency core, for rows I believe. Nothing was difficult. The top and bottom will accept the core and almost any competent radiator shop can do the work.<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 class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'>One caveat, I had to flatten the inside of the rail and bend it to accept the wider core. Again, that was not difficult. It is hard to see the modification.<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 class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'>John<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'>62’ BT7<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 class=MsoNormal><b><span style='font-size:11.0pt;font-family:"Calibri",sans-serif'>From:</span></b><span style='font-size:11.0pt;font-family:"Calibri",sans-serif'> Healeys [mailto:healeys-bounces@autox.team.net] <b>On Behalf Of </b>Harold Manifold<br><b>Sent:</b> Tuesday, July 11, 2023 9:40 AM<br><b>To:</b> warthodson@aol.com<br><b>Cc:</b> healeys@autox.team.net<br><b>Subject:</b> Re: [Healeys] Heater query<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal>Gary,<o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>I had the same options when restoring my Mk1 BT7. I looked into aluminum radiators extensively to see what the benefits might be. Contrary to popular belief it is not better heat transfer properties of the materials. The copper radiator fins on the original Healey radiators have much better thermal conductivity than aluminum. The advantage of the aluminum radiator is the manufacturing process and the formability of modern aluminum. The result is more tube and fin area. I estimated a Wizard radiator has about 25% more fin area than the stock radiator. The greater the fin area the better to expel heat.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Having said that, there is a third option which is to replace the original core with a high efficiency core. This retains the stock look of the engine bay and will be close in performance to the aluminum radiator. The high efficiency core option will be more expensive than a Wizard radiator and the difficulty is finding a radiator shop that can access the core can do the work.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>This website has a good overview: <a href="https://usradiator.com/cores">https://usradiator.com/cores</a><o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Harold<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div></div><p class=MsoNormal><o:p> </o:p></p><div><div><p class=MsoNormal>On Tue, Jul 11, 2023 at 9:12 AM warthodson--- via Healeys <<a href="mailto:healeys@autoxteam.net">healeys@autox.team.net</a>> wrote:<o:p></o:p></p></div><blockquote style='border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-right:0in'><div><div><div><p class=MsoNormal><span style='font-family:"Comic Sans MS"'>My 100 radiator is in need of some rehabilitation. It either needs to be boiled out, which would not replace some of the damaged fins, or re-cored. I am leaning toward re-coring but that would be more expensive, which leads to the aluminum option. <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-family:"Comic Sans MS"'>Besides price what are the pros vs. cons of these options? Does anyone know if re-cored 100 radiator is more efficient than an aluminum radiator?<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-family:"Comic Sans MS"'>Gary H<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-family:"Comic Sans MS"'><o:p> </o:p></span></p></div></div><div id="m_-2269323291578053413ydp70f1316yahoo_quoted_9797011705"><div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A'>On Monday, July 10, 2023 at 09:02:21 PM CDT, BJ8Healeys via Healeys <<a href="mailto:healeys@autox.team.net" target="_blank">healeys@autox.team.net</a>> wrote: <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A'><o:p> </o:p></span></p></div><div><div id="m_-2269323291578053413ydp70f1316yiv6075989256"><div><div><p><span style='font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#1F497D'>I live in the sunny South (90° F and 90% relative humidity today) and I used to refer to my BJ8’s heater as the “auxiliary engine cooler”; but I no longer have to use it that way since I had a modern core installed in the radiator and added a 190° sleeved thermostat that I bought from Kees.</span><span style='font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A'><o:p></o:p></span></p><p><span style='font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#1F497D'> </span><span style='font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A'><o:p></o:p></span></p><p><span style='font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#1F497D'>Steve Byers</span><span style='font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A'><o:p></o:p></span></p><p><span style='font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#1F497D'>HBJ8L/36666</span><span style='font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A'><o:p></o:p></span></p><p><span style='font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#1F497D'>BJ8 Registry</span><span style='font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A'><o:p></o:p></span></p><p><span style='font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#1F497D'>AHCA Delegate at Large</span><span style='font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A'><o:p></o:p></span></p><p><span style='font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#1F497D'>Havelock, NC USA</span><span style='font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A'><o:p></o:p></span></p><p><a name="m_-2269323291578053413__MailEndCompose"><span style='font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#1F497D'> </span></a><span style='font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A'><o:p></o:p></span></p><div id="m_-2269323291578053413ydp70f1316yiv6075989256yqt99156"><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'><p><span style='font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A'><o:p> </o:p></span></p></div></div></div></div></div></div></div></div></div></div><p class=MsoNormal style='margin-bottom:12.0pt'>_______________________________________________<br>Support Team.Net <a href="http://www.team.net/donate.html" target="_blank">http://www.team.net/donate.html</a><br>Suggested annual donation $12.75<br><br>Archive: <a href="http://www.team.net/pipermail/healeys" target="_blank">http://www.team.net/pipermail/healeys</a> <a href="http://autox.team.net/archive/healeys" target="_blank">http://autox.team.net/archive/healeys</a><br><br><a href="mailto:Healeys@autox.team.net" target="_blank">Healeys@autox.team.net</a><br><a href="http://autox.team.net/mailman/listinfo/healeys" target="_blank">http://autox.team.net/mailman/listinfo/healeys</a><br><br>Unsubscribe/Manage: <a href="http://autox.team.net/mailman/options/healeys/manifold@telus.net" target="_blank">http://autox.team.net/mailman/options/healeys/manifold@telus.net</a><o:p></o:p></p></blockquote></div></div></body></html>