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<div> <font size="3">Back in the day the advice was (probably) "Fill until neck is half full." Any excess will get dumped on the ground and the system will find it's own "Full." Back in the day that was acceptable. (probably)</font><br>
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<div style="clear:both"><font size="4">Dave </font><br>
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<div style="font-family:arial,helvetica;font-size:10pt;color:black"><font size="2">-----Original Message-----<br>
From: Dave MacKay <dave@mdmackay.ca><br>
To: Randy and Valerie DeRuiter <deruiterville@hotmail.com>; Triumphs@autox.team.net<br>
Sent: Mon, Feb 14, 2022 9:56 am<br>
Subject: Re: [TR] Add coolant overflow catch to TR3A<br>
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<div class="yiv1680948366MsoNormal"><span lang="EN-US">The TR3A owners manual (Practical hints …) says to “keep the neck of the filler at least half full of water”. I’ve been doing that and have always had coolant spilling out from the car. </span></div>
<div class="yiv1680948366MsoNormal"><span lang="EN-US"> </span></div>
<div class="yiv1680948366MsoNormal"><span lang="EN-US">If Randy is correct in saying that one should barely see coolant in the radiator neck when the TR3A is cold, I’ve been overfilling the radiator. Can I solve the overflow problem simply by keeping the rad less full? If so, how high should I fill the rad? </span></div>
<div class="yiv1680948366MsoNormal"><span lang="EN-US"> </span></div>
<div class="yiv1680948366MsoNormal"><span lang="EN-US">Or would I be better off fitting a TR4A overflow bottle? If so, where would be a good location? Here’s what I’d been thinking of: <a rel="nofollow noopener noreferrer" target="_blank" href="https://mossmotors.com/catalogsearch/result/?cat=8823&q=overflow">https://mossmotors.com/catalogsearch/result/?cat=8823&q=overflow</a></span></div>
<div class="yiv1680948366MsoNormal"><span lang="EN-US"> </span></div>
<div class="yiv1680948366MsoNormal"><span lang="EN-US">Thanks,</span></div>
<div class="yiv1680948366MsoNormal"><span lang="EN-US"> </span></div>
<div class="yiv1680948366MsoNormal"><span lang="EN-US">Dave MacKay</span></div>
<div class="yiv1680948366MsoNormal"><span lang="EN-US"> </span></div>
<div class="yiv1680948366MsoNormal"><b><span lang="EN-US">>From:</span></b><span lang="EN-US"> Randy and Valerie DeRuiter <<a rel="nofollow noopener noreferrer" ymailto="mailto:deruiterville@hotmail.com" target="_blank" href="mailto:deruiterville@hotmail.com">deruiterville@hotmail.com</a>> <br>
<b>>Subject:</b> Re: [TR] Add coolant overflow catch to TR3A</span></div>
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<div class="yiv1680948366MsoNormal"><span style="font-size:12.0pt;">><span style="color:black;">I'm not sure you have room as I haven't done it on a TR3A, but a coolant bottle and bracket from a TR4A-6 might fit which would put it below the horns. On my TR4, I added an expansion tank from an MGB like the picture attached which </span>><span style="color:black;">remained pressurized with the system and worked well. That tank can be added pretty much anywhere you have room.</span></span></div>
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<div class="yiv1680948366MsoNormal"><span style="font-size:12.0pt;">><span style="color:black;">That said, are you sure you need an overflow bottle? The 3A radiator neck has a lot of expansion space in it - and normally that is what keeps all the coolant in place - are you possibly overfilling your radiator? When cold you should barely </span>><span style="color:black;">see coolant in the radiator neck. </span></span></div>
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<div class="yiv1680948366MsoNormal"><span style="font-size:12.0pt;">><span style="color:black;">Randy</span></span></div>
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<div class="yiv1680948366xmsonormal">>> I’d like to add a coolant overflow bottle to my TR3A (s/n 68639L). I’m trying to determine a good spot for the coolant overflow bottle. The spot I like best is already taken up by the horns.</div>
<div class="yiv1680948366xmsonormal">>> </div>
<div class="yiv1680948366xmsonormal">>> What Have others done? Pictures would be very helpful.</div>
<div class="yiv1680948366xmsonormal">>> </div>
<div class="yiv1680948366xmsonormal">>> Thanks in advance,</div>
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