<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><span style="-webkit-text-size-adjust: auto; font-family: Verdana, Trebuchet, "Trebuchet MS", sans-serif; background-color: rgb(255, 255, 255);">on page 43 of the "triumph preparation handbook</span><br style="-webkit-text-size-adjust: auto; font-family: Verdana, Trebuchet, "Trebuchet MS", sans-serif; background-color: rgb(255, 255, 255);"><span style="-webkit-text-size-adjust: auto; font-family: Verdana, Trebuchet, "Trebuchet MS", sans-serif; background-color: rgb(255, 255, 255);">it says "to achieve the 11.7c.r. mill .150" </span><span style="-webkit-text-size-adjust: auto; font-family: Verdana, Trebuchet, "Trebuchet MS", sans-serif; background-color: rgb(255, 255, 255);">from the stock cylender head face,use the 87mm cyl. & </span><br style="-webkit-text-size-adjust: auto; font-family: Verdana, Trebuchet, "Trebuchet MS", sans-serif; background-color: rgb(255, 255, 255);"><span style="-webkit-text-size-adjust: auto; font-family: Verdana, Trebuchet, "Trebuchet MS", sans-serif; background-color: rgb(255, 255, 255);">piston kit and a steel shim head gasket"</span><div><font face="Verdana, Trebuchet, Trebuchet MS, sans-serif"><span style="-webkit-text-size-adjust: auto; background-color: rgb(255, 255, 255);"><br></span></font></div><div><font face="Verdana, Trebuchet, Trebuchet MS, sans-serif"><span style="-webkit-text-size-adjust: auto; background-color: rgb(255, 255, 255);"><br></span></font></div><div><font face="Verdana, Trebuchet, Trebuchet MS, sans-serif"><span style="-webkit-text-size-adjust: auto; background-color: rgb(255, 255, 255);">A lot of us have done just that, successfully. </span></font></div><div><font face="Verdana, Trebuchet, Trebuchet MS, sans-serif"><span style="-webkit-text-size-adjust: auto; background-color: rgb(255, 255, 255);"><br></span></font></div><div><font face="Verdana, Trebuchet, Trebuchet MS, sans-serif"><span style="-webkit-text-size-adjust: auto; background-color: rgb(255, 255, 255);"><br id="lineBreakAtBeginningOfSignature"></span></font><div dir="ltr">You only get one chance at life, make it a TRIUMPH.</div><div dir="ltr"><br><blockquote type="cite">On Apr 5, 2024, at 9:58 PM, tr4 via Fot <fot@autox.team.net> wrote:<br><br></blockquote></div><blockquote type="cite"><div dir="ltr"><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><div dir="auto">I have never had to go that far. The problem would be not the combustion chamber but the flat surface would be way too thin and collapse in short order. You would be much better off with popping the piston or go with a slight done to get that level of compression.</div><div dir="auto"><br></div><div dir="auto"><br></div><div dir="auto"><br></div><div id="composer_signature" dir="auto"><div style="font-size:12px;color:#575757" dir="auto">Sent via the Samsung Galaxy S23+ 5G, an AT&T 5G smartphone</div></div><div dir="auto"><br></div><div><br></div><div align="left" dir="auto" style="font-size:100%;color:#000000"><div>-------- Original message --------</div><div>From: GREGORY THOMPSON via Fot <fot@autox.team.net> </div><div>Date: 4/5/24 6:36 PM (GMT-06:00) </div><div>To: FOT Triumph <fot@autox.team.net> </div><div>Subject: [Fot] TR4 head milling </div><div><br></div></div>Has anyone had an issue with breaking into a water jacket on the TR4A head with taking off .150?<div><br></div><div><div style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:16px;" class="ydp72b54109yahoo-style-wrap"><div><div>Thank you,</div><div><br></div><div class="ydp72b54109signature">Greg Thompson </div></div></div></div><span>_______________________________________________</span><br><span>fot@autox.team.net</span><br><span></span><br><span>http://www.fot-racing.com</span><br><span></span><br><span>Donate: http://www.team.net/donate.html</span><br><span>Archive: http://autox.team.net/archive http://www.team.net/pipermail/fot</span><br><span>Unsubscribe/Manage: http://autox.team.net/mailman/options/fot/rkramer56@gmail.com</span><br><span></span><br><span></span><br></div></blockquote></div></body></html>