<html xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><meta http-equiv=Content-Type content="text/html; charset=utf-8"><meta name=Generator content="Microsoft Word 15 (filtered medium)"><style><!--
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--></style></head><body lang=EN-US link=blue vlink=purple style='word-wrap:break-word'><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif'>This respones is correct.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif'><o:p> </o:p></span></p><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'>From:</span></b><span style='font-size:11.0pt;font-family:"Calibri",sans-serif'> Healeys <healeys-bounces@autox.team.net> <b>On Behalf Of </b>Jim Ryan<br><b>Sent:</b> Saturday, October 11, 2025 2:03 PM<br><b>To:</b> Simon Lachlan <simon.lachlan@alexarevel.plus.com><br><b>Cc:</b> Healeys <healeys@autox.team.net><br><b>Subject:</b> Re: [Healeys] Radiator cap with expansion tank.<o:p></o:p></span></p></div><p class=MsoNormal><o:p> </o:p></p><div><div><p class=MsoNormal>Hey Simon,<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>No, the radiator cap stays on the radiator. Increased pressure in the radiator raises the boiling point. If the radiator gets hot enough for the pressure to release the cab then the overflow will go into the wall bottle. Once it cools down it's supposed to get pulled back into the radiator. Of course, this is a British car so theory and reality May differ. But you definitely want to leave a lady in the cop on the radiator.<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><div><p><span style='font-size:10.0pt;color:navy'>Jim Ryan</span><span style='font-size:9.5pt'><o:p></o:p></span></p><p><span style='font-size:9.5pt'>©¿©¬<o:p></o:p></span></p></div></div></div><p class=MsoNormal><o:p> </o:p></p><div><div><p class=MsoNormal>On Sat, Oct 11, 2025, 11:45<span style='font-family:"Arial",sans-serif'> </span>AM Simon Lachlan via Healeys <<a href="mailto:healeys@autox.team.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><p><span lang=EN-GB>Forgive another stupid question but it’s sensible to be sure……….</span><o:p></o:p></p><p><span lang=EN-GB>Am I right in assuming(!) that, if one fits an expansion tank, the standard cap is moved from the radiator to the expansion tank and is replaced by a blanking(?) cap ie one which has no spring, no means of relief etcetc? Seem logical to me but logic has let me down before.</span><o:p></o:p></p><p><span lang=EN-GB>Simon</span><o:p></o:p></p></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/ryan@jimryan.com" target="_blank">http://autox.team.net/mailman/options/healeys/ryan@jimryan.com</a><o:p></o:p></p></blockquote></div></div></body></html>