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First, I have never lapped one of these valves but I have scraped a lot of Babbitt bearings and flat steel surfaces in my time and if I were lapping this valve, this is the technique I would use. I would use Engineer’s Blue on the lapped surface of the plug.
Place the plug in the body and then turn it a full turn. Remove the plug and look at where the blue has rubbed off the surface of the plug, and where it remains. In the areas that it remains, the plug is not in good contact with the valve body. Continue lapping
until the blue is removed evenly across the entire surface of the plug.
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<div>As I said, I have never done this exact thing, but I believe this will work. YMMV</div>
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<div>Mike<br>
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<div dir="ltr">Sent from my iPhone</div>
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<blockquote type="cite">On May 3, 2021, at 16:28, David Friedlander <forzion7@gmail.com> wrote:<br>
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<div dir="auto">How can one tell when the two parts are correctly and sufficiently lapped? Do we need to reassemble the parts, re-mount it to the block each time?</div>
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<div dir="ltr" class="gmail_attr">On Mon, May 3, 2021 at 2:22 PM Reihing, Randall S. <<a href="mailto:Randall.Reihing@utoledo.edu">Randall.Reihing@utoledo.edu</a>> wrote:<br>
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Stan has the solution but in place of toothpaste the Clover Lapping Compound might be faster. Try 800 grit and finer. </div>
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<div style="font-family:Calibri,Arial,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">
Randall Reihing</div>
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1959 TR3A</div>
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<div id="m_-1194398242546532104divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Triumphs <<a href="mailto:triumphs-bounces@autox.team.net" target="_blank">triumphs-bounces@autox.team.net</a>> on behalf
of Stan Foster <<a href="mailto:stan@redtr6.com" target="_blank">stan@redtr6.com</a>><br>
<b>Sent:</b> Sunday, May 2, 2021 10:50 PM<br>
<b>To:</b> Triumphs <<a href="mailto:triumphs@autox.team.net" target="_blank">triumphs@autox.team.net</a>><br>
<b>Subject:</b> [EXTERNAL] [TR] FW: TR2-3-4 Engine and Rad Taps</font>
<div> </div>
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<div lang="EN-US" link="#0563C1" vlink="#954F72" style="word-wrap:break-word">
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<p><span style="color:black">The new engine drain tap leaked when I rebuilt my TR3 engine. I took the tap apart and lapped the tapers together with toothpaste until all surfaces looked even. It did not take long. No leaks in 6 years and the engine still has
that minty fresh smell.</span></p>
<p><span style="color:black"> </span></p>
<p><span style="color:black">Stan</span></p>
<p><span style="color:black"> </span></p>
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<p><b>From:</b> Triumphs <<a href="mailto:triumphs-bounces@autox.team.net" target="_blank">triumphs-bounces@autox.team.net</a>>
<b>On Behalf Of </b>Brian Thomas<br>
<b>Sent:</b> Sunday, May 2, 2021 12:11 PM<br>
<b>To:</b> <a href="mailto:triumphs@autox.team.net" target="_blank">triumphs@autox.team.net</a><br>
<b>Cc:</b> Brad Smith (<a href="mailto:britspcars@gmail.com" target="_blank">britspcars@gmail.com</a>) <<a href="mailto:britspcars@gmail.com" target="_blank">britspcars@gmail.com</a>><br>
<b>Subject:</b> [TR] TR2-3-4 Engine and Rad Taps</p>
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<p> </p>
<p><span lang="EN-CA" style="font-size:14.0pt;font-family:"Comic Sans MS"">Hi,</span></p>
<p><span lang="EN-CA" style="font-size:14.0pt;font-family:"Comic Sans MS""> </span></p>
<p><span lang="EN-CA" style="font-size:14.0pt;font-family:"Comic Sans MS"">I’m having great difficulty getting either of the drain taps in the TR2 to stop leaking. I’ve tried various used taps from my 45+ year “collection” without any success. The taps leak
mostly out the drain hole but some also where screwed into the block/rad.</span></p>
<p><span lang="EN-CA" style="font-size:14.0pt;font-family:"Comic Sans MS""> </span></p>
<p><span lang="EN-CA" style="font-size:14.0pt;font-family:"Comic Sans MS"">I recently ordered a pair of new replacements from Rimmer with high hopes but after install, both leak from the side opposite the lever – see pic. This is with antifreeze in, rad cap
off and no pressurization. I’ve asked Rimmer for comment, but they are closed until Tuesday (bank holiday Monday).</span></p>
<p><span lang="EN-CA" style="font-size:14.0pt;font-family:"Comic Sans MS""> </span></p>
<p><span lang="EN-CA" style="font-size:14.0pt;font-family:"Comic Sans MS""></p>
<div><image001.png></div>
</span><span lang="EN-CA" style="font-size:14.0pt;font-family:"Comic Sans MS""></span>
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<p><span lang="EN-CA" style="font-size:14.0pt;font-family:"Comic Sans MS""> </span></p>
<p><span lang="EN-CA" style="font-size:14.0pt;font-family:"Comic Sans MS"">The pic is shows the engine install with the spring portion “up” – that’s what it tightened to.</span></p>
<p><span lang="EN-CA" style="font-size:14.0pt;font-family:"Comic Sans MS""> </span></p>
<p><span lang="EN-CA" style="font-size:14.0pt;font-family:"Comic Sans MS"">Has anyone had success with current offerings from the various vendors? I see Moss also offers them – others? TRF doesn’t currently have them.
</span></p>
<p><span lang="EN-CA" style="font-size:14.0pt;font-family:"Comic Sans MS""> </span></p>
<p><span lang="EN-CA" style="font-size:14.0pt;font-family:"Comic Sans MS"">I’m about to give up and try the Don Elliot solution sealing the taps where they thread into the block/rad.</span></p>
<p><span lang="EN-CA" style="font-size:14.0pt;font-family:"Comic Sans MS""> </span></p>
<p><span lang="EN-CA" style="font-size:14.0pt;font-family:"Comic Sans MS"">Appreciate any suggestions.</span></p>
<p><span lang="EN-CA" style="font-size:14.0pt;font-family:"Comic Sans MS""> </span></p>
<p><span lang="EN-CA" style="font-size:14.0pt;font-family:"Comic Sans MS"">Stay well and cheers,</span></p>
<p><span lang="EN-CA" style="font-size:14.0pt;font-family:"Comic Sans MS""> </span></p>
<p><span lang="EN-CA" style="font-size:14.0pt;font-family:"Comic Sans MS"">Brian</span></p>
<p><span lang="EN-CA" style="font-size:14.0pt;font-family:"Comic Sans MS";color:#c00000">_____________________________________________________</span></p>
<p><span lang="EN-CA" style="font-size:14.0pt;font-family:"Comic Sans MS";color:#0070c0">Brian Thomas
</span><span lang="EN-CA" style="font-size:14.0pt;font-family:"Comic Sans MS";color:black">E-Mail:
</span><span lang="EN-CA" style="font-size:14.0pt;font-family:"Comic Sans MS";color:#0070c0"> <a href="mailto:Brian.Thomas@QueensU.Ca" target="_blank"><span style="text-decoration:none">Brian.Thomas@QueensU.Ca</span></a></span></p>
<p><span lang="EN-CA" style="font-size:14.0pt;font-family:"Comic Sans MS";color:#0070c0"><a href="https://urldefense.proofpoint.com/v2/url?u=https-3A__www.google.com_maps_search_92-2BWyona-2BLane-3Fentry-3Dgmail-26source-3Dg&d=DwMFaQ&c=euGZstcaTDllvimEN8b7jXrwqOf-v5A_CdpgnVfiiMM&r=HL4LAX-jeuoWNeqz1u1ryqDHfrhQ38xO3ECYGpjCniQ&m=JDNn2zj7jhxUi1MKIVb4w35MqNI5K4-rNC7jp0Qniwg&s=Nnw9AXwLuYIBYxos2AibUns2nat1iiBVLI9eFvim6yo&e=">92
Wyona Lane</a> </span><span lang="EN-CA" style="font-size:14.0pt;font-family:"Comic Sans MS";color:black">Phone:</span><span lang="EN-CA" style="font-size:14.0pt;font-family:"Comic Sans MS";color:#0070c0"> 613-385-1947</span></p>
<p><span lang="EN-CA" style="font-size:14.0pt;font-family:"Comic Sans MS";color:#0070c0">Wolfe Island, Ontario
</span><span lang="EN-CA" style="font-size:14.0pt;font-family:"Comic Sans MS";color:black">Toys:</span><span lang="EN-CA" style="font-size:14.0pt;font-family:"Comic Sans MS";color:#0070c0"> 54 TR2, 56 TR3, 67 TR4A,
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</span><span lang="EN-CA" style="font-size:14.0pt;font-family:"Comic Sans MS";color:#00b050">75 John Deere 920</span><span lang="EN-CA" style="font-size:14.0pt;font-family:"Comic Sans MS";color:#0070c0"></span></p>
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