<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto">Thanks Ken and Tony,<div><br></div><div>Glad to hear the bottom end has more life. Will do a leak down test and be asking about Triumph top end rebuilders in New England. </div><div><br></div><div>Jim<br><br><div dir="ltr">Sent from my iPhone</div><div dir="ltr"><br><blockquote type="cite">On Oct 28, 2023, at 7:06 PM, Ken Knight <kknight@klaenv.com> wrote:<br><br></blockquote></div><blockquote type="cite"><div dir="ltr"><meta http-equiv="Content-Type" content="text/html; charset=utf-8"><meta name="Generator" content="Microsoft Word 15 (filtered medium)"><style>@font-face { font-family: "Cambria Math"; }
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ul { margin-bottom: 0in; }</style><div class="WordSection1"><p class="MsoNormal">If you can barrow a leak down tester that is still the best tool to assess engine health. I also change oil filters after each race and cut it open to see what is trapped inside. A well built TR race motor can easily do double those hours on the bottom end. In my opinion the key to long tern motor health, assuming a good build, is a high quality race oil. My choice is Joe Gibbs Driven XP-3 10-30, I have bearings that look almost new at 50 hrs. using this oil. No such thing as “cheap” racing oil. “Never be beaten by parts” K. Kastner.</p><p class="MsoNormal"><o:p> </o:p></p><p class="MsoNormal">Ken</p><p class="MsoNormal"><o:p> </o:p></p><p class="MsoNormal"><o:p> </o:p></p><p class="MsoNormal"><o:p> </o:p></p><p class="MsoNormal">Sent from <a href="https://go.microsoft.com/fwlink/?LinkId=550986">Mail</a> for Windows</p><p class="MsoNormal"><o:p> </o:p></p><div style="mso-element:para-border-div;border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in"><p class="MsoNormal" style="border:none;padding:0in"><b>From: </b><a href="mailto:fot@autox.team.net">James Trudeau via Fot</a><br><b>Sent: </b>Saturday, October 28, 2023 2:06 PM<br><b>To: </b><a href="mailto:fot@autox.team.net">fot@autox.team.net</a><br><b>Subject: </b>[Fot] Race Engine Refreshing Frequency - compression results</p></div><p class="MsoNormal"><o:p> </o:p></p><p class="MsoNormal">I finished a 9 weekend race/school/track day season that started in April and finished at Thompson in October with no obvious performance problems. Total of 38 engine hours including warmup, grid, race, cool down. <o:p></o:p></p><div><p class="MsoNormal"><o:p> </o:p></p></div><div><p class="MsoNormal">Did a dry compression test today:<o:p></o:p></p></div><div><ol style="margin-top:0in;-webkit-text-size-adjust: auto" start="1" type="1"><li class="li1" style="margin-top:0in;margin-bottom:0in;mso-list:l0 level1 lfo1;font-stretch: normal"><span class="s1">210</span><o:p></o:p></li><li class="li1" style="margin-top:0in;margin-bottom:0in;mso-list:l0 level1 lfo1;font-stretch: normal"><span class="s1">225</span><o:p></o:p></li><li class="li1" style="margin-top:0in;margin-bottom:0in;mso-list:l0 level1 lfo1;font-stretch: normal"><span class="s1">195</span><o:p></o:p></li><li class="li1" style="margin-top:0in;margin-bottom:0in;mso-list:l0 level1 lfo1;font-stretch: normal"><span class="s1">200</span><o:p></o:p></li></ol><div><p class="MsoNormal"><o:p> </o:p></p></div><div><p class="MsoNormal">I get some oil blow by at the valve cover cap and maybe some drips from lower end seals (not sure if oil starts at valve cover). <o:p></o:p></p></div><div><p class="MsoNormal"><o:p> </o:p></p></div><div><p class="MsoNormal">I’m sure I’ll hear a suggestion to do a leak down test and / or wet compression. <o:p></o:p></p></div><div><p class="MsoNormal"><o:p> </o:p></p></div><div><p class="MsoNormal">Oil filter forensics?<o:p></o:p></p></div><div><p class="MsoNormal"><o:p> </o:p></p></div><div><p class="MsoNormal">In the absence of obvious issues, how much of a tear down is warranted? <o:p></o:p></p></div><div><p class="MsoNormal"><o:p> </o:p></p></div><div><p class="MsoNormal" style="margin-bottom:12.0pt">Jim<o:p></o:p></p></div></div><p class="MsoNormal">Sent from my iPhone<o:p></o:p></p><p class="MsoNormal"><o:p> </o:p></p></div></div></blockquote></div></body></html>