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<div dir="ltr" data-setdir="false">Hi Paul;</div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false">Please find attached a spreadsheet I use to calculate compression ratio, or to determine the head volume needed to get a particular ratio. Just fill in the information requested in the yellow cells and it should yield what you want. You will need to measure the volume of the combustion chamber in the head (HV), cell F10. You should measure all of them because there can be significant variation in the factory head and/or from valve depression due to wear or prior valve jobs. Head volume measurement ("CCing") kits can be obtained from Summit Racing. You'll need to measure over 50 cc, so get a big one. Any issues, feel free to call me. Eastern time.</div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false">Regards,</div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false">Phil Gott</div><div dir="ltr" data-setdir="false">508 414 0256</div><div><br></div>
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On Saturday, February 22, 2025 at 08:41:37 AM EST, Paul Morro via Fot <fot@autox.team.net> wrote:
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<div><div id="yiv6852371742"><div><div style="font-family:arial;font-size:16px;" class="yiv6852371742yahoo-style-wrap"><div dir="ltr">Hi out there,</div><div dir="ltr"> Would anyone out there have a compression ratio chart for a High Port TR3 head? Or be able to share CR with respect to cylinder head thickness and bore? I'm building a street engine and would like a 9.5:1 CR.</div><div dir="ltr">Thanks in advance!</div><div dir="ltr">Paul Morro</div><div dir="ltr"><br></div><div dir="ltr"><br></div></div></div></div>_______________________________________________<br><a ymailto="mailto:fot@autox.team.net" href="mailto:fot@autox.team.net">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" 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/vfracing@aol.com" target="_blank">http://autox.team.net/mailman/options/fot/vfracing@aol.com</a><br><br><br></div>
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