<html><head></head><body>Jim, we've debated this often. Its my opinion that blocking the bypass is not necessary, and may lead to unpleasant side effects (like a cracked head). Even Triumph later deleted the sleeved thermostat.<br><br>So you might want to try leaving it open.<br><br>To answer your question, I've heard that a 3/4" copper pipe cap fits well in the hose. I chose a different route, and tapped the fitting on the water pump housing for a pipe plug.<br>-- Randall<br><br><div class="gmail_quote">On 19 April 2019 06:17:29 GMT-07:00, Jim Henningsen <trguy75@gmail.com> wrote:<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
<pre class="k9mail">I would like to install a regular (non bellows) 160 degree thermostat in my<br>62 TR4. I am hearing that to do so I need to block off the bypass hose.<br>I'd like to keep the stock look of the bypass hose installed. Is there a<br>particular plug or bung that folks have used to insert into the bypass<br>opening on the water pump housing or thermostat housing that is effective. <br>Thanks in advance.<br>Jim Henningsen<br>Ocala, FL 34471<br><br>** triumphs@autox.team.net **<br><br>Donate: <a href="http://www.team.net/donate.html">http://www.team.net/donate.html</a><br>Archive: <a href="http://www.team.net/pipermail/triumphs">http://www.team.net/pipermail/triumphs</a> <a href="http://www.team.net/archive">http://www.team.net/archive</a><br><br>Unsubscribe/Manage: <a href="http://autox.team.net/mailman/options/triumphs/tr3driver@ca.rr.com">http://autox.team.net/mailman/options/triumphs/tr3driver@ca.rr.com</a><br></pre></blockquote></div></body></html>