<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto">We had a rear main on a wet sleeve engine crack. It was discovered by routine magna fluxing at our machine shop. Bearing looked normal. Fortunately we have more caps than engines and found an orphan that fit close enough to machine to fit.<div>Phil Gott<br><div><br id="lineBreakAtBeginningOfSignature"><div dir="ltr">Sent from my iPhone</div><div dir="ltr"><br><blockquote type="cite">On Feb 18, 2024, at 9:34 AM, JS Performance Motoring, LLC via Fot <fot@autox.team.net> wrote:<br><br></blockquote></div><blockquote type="cite"><div dir="ltr"><div dir="ltr">Hi Mike,<div><br></div><div>I had the same issue recently on a street TR6 engine. It was a tired, but running engine. </div><div><br></div><div>We sorted through a whole box of caps before finding one that was close enough to be cut/ line honed. That's been my experience anytime I've had to replace a cap, there seems to be a ton of variation from block to block.</div><div><br clear="all"><div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><div dir="ltr"><div>Jason Sukey</div><div><span></span><span></span>JS Performance Motoring, LLC<br></div><div>440.984.7720</div><div><a href="mailto:jason@jsperformancemotoring.com" target="_blank">jason@jsperformancemotoring.com</a><br></div><div><a href="https://www.facebook.com/JSPerformanceMotoring/" target="_blank">https://www.facebook.com/JSPerformanceMotoring/</a><br></div></div></div></div></div></div></div></div></div></div><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sun, Feb 18, 2024 at 8:50 AM Michael Deweerd via Fot <<a href="mailto:fot@autox.team.net">fot@autox.team.net</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 dir="ltr">WE tore down the TR4engine yesterday to check the bearing wear and give it a once over before the new race season starts. Everything looked great till I removed the front main bearing cap. Is this a common fault? Has anyone had this before and what would cause the main cap to break? It's not a fresh crack so I was racing this way.....time to buy a lotto ticket? Dragged a spare engine out from the engine shed and will send it to the machine shop on Monday. <div>I checked a few other mains and nothing I have lines up close enough to line hone ...also a Triumph thing? <br clear="all"><div><div><image.png></div><br></div><span class="gmail_signature_prefix">--Cheers!!!</span><br><div dir="ltr" class="gmail_signature"><div dir="ltr"><i><font face="comic sans ms, sans-serif">Mike Deweerd</font></i></div></div></div></div>
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