<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div dir="ltr">Mine is a December 1963 built TR4 with crank breather tube, twin ZS and valve cover vent to the carbs. I researched this some time ago and it seemed the ZS carbs were introduced late summer of ‘63. </div><div dir="ltr"><br><blockquote type="cite">On Jan 16, 2021, at 8:28 AM, Michael Burdick <salty1249y@gmail.com> wrote:<br><br></blockquote></div><blockquote type="cite"><div dir="ltr"><div dir="ltr">FWIW, I have 2 '64 TR4s (CT28xxx and CT35xxx) and both have ZS carbs with the same crankcase vent system (valve cover vent into "flame trap" branching into the air filter housings). My assumption was that this set up was implemented for the 1964 model year only...<div><br></div><div>Cheers,</div><div>Mike</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sat, Jan 16, 2021 at 9:47 AM dave <<a href="mailto:dave@ranteer.com">dave@ranteer.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div lang="EN-US" style="overflow-wrap: break-word;"><div class="gmail-m_1586514425795871951WordSection1"><p class="MsoNormal">Here is an interesting video of a TR4 engine refresh. Wish I could do it that quickly!!!<u></u><u></u></p><p class="MsoNormal"><u></u> <u></u></p><p class="MsoNormal"><a href="https://www.youtube.com/watch?v=1GAl_ScYOOY" target="_blank">https://www.youtube.com/watch?v=1GAl_ScYOOY</a><u></u><u></u></p><p class="MsoNormal"><u></u> <u></u></p><p class="MsoNormal">it look like an early car – it has the round engine mounts, but it also has ZS carbs.<u></u><u></u></p><p class="MsoNormal"><u></u> <u></u></p><p class="MsoNormal">Clearly I was wrong – I thought the ZS didn’t appear until the TR4a<u></u><u></u></p></div></div>** <a href="mailto:triumphs@autox.team.net" target="_blank">triumphs@autox.team.net</a> **<br>
<br>
Donate: <a href="http://www.team.net/donate.html" rel="noreferrer" target="_blank">http://www.team.net/donate.html</a><br>
Archive: <a href="http://www.team.net/pipermail/triumphs" rel="noreferrer" target="_blank">http://www.team.net/pipermail/triumphs</a> <a href="http://www.team.net/archive" rel="noreferrer" target="_blank">http://www.team.net/archive</a><br>
<br>
Unsubscribe/Manage: <a href="http://autox.team.net/mailman/options/triumphs/salty1249y@gmail.com" rel="noreferrer" target="_blank">http://autox.team.net/mailman/options/triumphs/salty1249y@gmail.com</a><br>
</blockquote></div>
<span>** triumphs@autox.team.net **</span><br><span></span><br><span>Donate: http://www.team.net/donate.html</span><br><span>Archive: http://www.team.net/pipermail/triumphs http://www.team.net/archive</span><br><span></span><br><span>Unsubscribe/Manage: http://autox.team.net/mailman/options/triumphs/john@linneyweb.com</span><br></div></blockquote></body></html>