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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link="#467886" vlink="#96607D" style='word-wrap:break-word'><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt'>Yep, I did exactly that plus deshrouded the valves. I took off just enough to remove the shrouds at the valves and went with Wiseco pop ups made to order through BF&E. Also welded in and reshaped the exhaust valve pockets and part of the ports. It spent a lot of time on the flow bench.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'>The head I built before this one eventually cracked due to being milled to thin so I went the other way to get compression.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'>jg<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'><o:p> </o:p></span></p><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b><span style='font-size:11.0pt;font-family:"Calibri",sans-serif'>From:</span></b><span style='font-size:11.0pt;font-family:"Calibri",sans-serif'> Fot <fot-bounces@autox.team.net> <b>On Behalf Of </b>Bob Kramer via Fot<br><b>Sent:</b> Saturday, January 11, 2025 8:33 AM<br><b>To:</b> Fot <fot@autox.team.net><br><b>Subject:</b> [Fot] milling TR4 head for pop-ups<o:p></o:p></span></p></div><p class=MsoNormal><o:p> </o:p></p><div><div><p class=MsoNormal>I am finally rebuilding the engine I got with the #67 TR4 many years ago. The car came to me with dual SK sidedrafts (Weber rip-offs) and the head had some interesting stuff done to it.The intake area on the head was carved out to raise the angle of the SK's and the combustion chambers were recessed with a flat mill to fit pop up pistons to gain compression without much head milling. I know others run pop-up pistons. Has anyone else done this?<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><div><div><p class=MsoNormal>Bob Kramer<o:p></o:p></p></div></div></div></div></div></body></html>