<html><body><div style="font-family: Arial; font-size: 12pt; color: #000000"><div aria-label="Compose body">Don't the caps used with an overflow system require a check valve, to pull the overflowed coolant back into the radiator as it cools?<br></div><div aria-label="Compose body"><br></div><div aria-label="Compose body">Dunno if you can find the right size cap for a Healey rad with such a check valve.<br></div><div aria-label="Compose body"><br></div><div aria-label="Compose body">Bob<br></div><div><br></div><hr id="zwchr"><div style="color:#000;font-weight:normal;font-style:normal;text-decoration:none;font-family:Helvetica,Arial,sans-serif;font-size:12pt;" data-mce-style="color: #000; font-weight: normal; font-style: normal; text-decoration: none; font-family: Helvetica,Arial,sans-serif; font-size: 12pt;"><br><div><br></div><style><!--
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--></style><div dir="ltr">Let it overflow. Once it reaches the level of about one inch below the rim it will not over flow any more. But make sure you have the proper radiator cap. Check with British Car Specialist as the depth which it seals is deeper than the standard caps.<br>Rich Kahn<br><div><br></div><div><hr id="stopSpelling"><br><div><br></div><div class="ecxWordSection1"><p class="ecxMsoNormal"><a class="mceItemAnchor" name="_MailEndCompose" target="_blank"></a><span style="color:#1F497D;" data-mce-style="color: #1f497d;">The BN6 does not have a radiator overflow and leaves a big puddle in the garage after every drive.</span></p><p class="ecxMsoNormal"><span style="color:#1F497D;" data-mce-style="color: #1f497d;">My brother, the hot rodder, suggested a thin chromed overflow canister available at most rod shops and amazon. I am not sure if there is enough room and it would look to out of place. </span></p><p class="ecxMsoNormal"><span style="color:#1F497D;" data-mce-style="color: #1f497d;">Does anyone have a picture of an elegant and easy solution.</span></p><p class="ecxMsoNormal"><span style="color:#1F497D;" data-mce-style="color: #1f497d;"> </span></p><p class="ecxMsoNormal"><span style="color:#1F497D;" data-mce-style="color: #1f497d;">Thank you</span></p><p class="ecxMsoNormal"><span style="color:#1F497D;" data-mce-style="color: #1f497d;">Ross Maylor</span></p><p class="ecxMsoNormal"><span style="color:#1F497D;" data-mce-style="color: #1f497d;">1958 BN6</span></p></div><br></div></div></div></div></body></html>