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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple style='word-wrap:break-word'><div class=WordSection1><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Jack,<o:p></o:p></p><p class=MsoNormal>I use the Wiseco pop ups for the same reason. I have a big investment in my head and so I didn’t want to mill it so far as to sacrifice reliability.<o:p></o:p></p><p class=MsoNormal>My last one cracked at a water jacket.<o:p></o:p></p><p class=MsoNormal>I use BFE supplied liners ( LA Sleeve ).<o:p></o:p></p><p class=MsoNormal>jim g<img width=405 height=348 style='width:4.2187in;height:3.625in' id="Picture_x0020_1" src="cid:image001.jpg@01D7D53C.ECA7C150" alt="A group of pots and pans on a counter
Description automatically generated with low confidence"><o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b>From:</b> Fot <<a href="mailto:fot-bounces@autox.team.net">fot-bounces@autox.team.net</a>> <b>On Behalf Of </b>Jack Wheeler via Fot<br><b>Sent:</b> Tuesday, November 9, 2021 7:20 AM<br><b>To:</b> Erik Jacobsen <<a href="mailto:kekjacobsen@yahoo.com">kekjacobsen@yahoo.com</a>><br><b>Cc:</b> FOT Triumph <<a href="mailto:fot@autox.team.net">fot@autox.team.net</a>><br><b>Subject:</b> Re: [Fot] TR3 Race pistons and liners<o:p></o:p></p></div></div><p class=MsoNormal><o:p> </o:p></p><div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Helvetica",sans-serif'>Thirty + years ago I modified a set of pop-up pistons made for a Chevy. I shaped the pop-up portion to fit into the combustion chamber of the TR cylinder head. This gave me higher compression without having to mill the head so much. It was a long time ago, but I think I was running 13.5:1 compression with .150" milled off the head.<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Helvetica",sans-serif'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Helvetica",sans-serif'>After I won The Runoffs in 1990, Cosworth contacted me and wanted to know what pistons I was using. They asked if they could borrow one of my pistons to use as a template for a pop-up piston for the TR engine. In return, they gave me a set of new Cosworth pop-up pistons ready to install, without modification.<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Helvetica",sans-serif'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Helvetica",sans-serif'>The advantage of the pop-up design is that you don't have to mill as much off the head, thus extending cylinder head life. I suspect these Cosworth pistons may still be available through a Cosworth dealer. Perhaps someone on the FOT knows if these are still available.<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Helvetica",sans-serif'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Helvetica",sans-serif'>Good luck.<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Helvetica",sans-serif'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Helvetica",sans-serif'>Jack Wheeler <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Helvetica",sans-serif'><o:p> </o:p></span></p></div></div><div id="ydp44ab9334yahoo_quoted_7123597973"><div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A'>On Tuesday, November 9, 2021, 09:05:33 AM EST, Erik Jacobsen via Fot <<a href="mailto:fot@autox.team.net">fot@autox.team.net</a>> wrote: <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A'><o:p> </o:p></span></p></div><div><div id=ydp44ab9334yiv6796105370><div><div><div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Helvetica",sans-serif;color:#26282A'>Good morning FoT!<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Helvetica",sans-serif;color:#26282A'>Karen and I are working on the TR3 race car, and are looking for your advice on pistons and liners for it. We are attempting to build a (semi) streetable race motor for our 3. It has a Crane 244-310-8 cam, and the head has been ported and is running big valves, so we are figuring the compression should be in the 10.5-11.5:1 range. It has H-beam rods and a worked crank, but we will still keep the revs under 6500 in an attempt to keep it all in one piece. <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Helvetica",sans-serif;color:#26282A'>There seems to be very little info on what people are running for race pistons floating around on the net. <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Helvetica",sans-serif;color:#26282A'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Helvetica",sans-serif;color:#26282A'>Thanks!<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Helvetica",sans-serif;color:#26282A'>Jake & Karen Jacobsen <o:p></o:p></span></p></div></div></div></div><p class=MsoNormal style='margin-bottom:12.0pt'><span style='font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A'>_______________________________________________<br><a href="mailto:fot@autox.team.net" target="_blank">fot@autox.team.net</a><br><br><a href="http://www.fot-racing.com" target="_blank">http://www.fot-racing.com</a><br><br>Donate: <a href="http://www.team.net/donate.html" target="_blank">http://www.team.net/donate.html</a><br>Archive: <a href="http://autox.team.net/archive%20" target="_blank">http://autox.team.net/archive </a><a href="http://www.team.net/pipermail/fot" target="_blank">http://www.team.net/pipermail/fot</a><br>Unsubscribe/Manage: <a href="http://autox.team.net/mailman/options/fot/jwheeler1947@yahoo.com" target="_blank">http://autox.team.net/mailman/options/fot/jwheeler1947@yahoo.com</a><o:p></o:p></span></p></div></div></div></div></body></html>