Subject: [Fot] TR3 Cyl head Specs

From: Paul Morro via Fot <[email-masked]>
Date: Sat, 22 Feb 2025 13:15:49 +0000 (UTC)

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Hi out there,=C2=A0Would anyone out there have a compression ratio chart fo=
r a High Port TR3 head? Or be able to share CR with respect to cylinder hea=
d thickness and bore? I'm building a street engine and would like a 9.5:1 C=
R.Thanks in advance!Paul Morro

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<html><head></head><body><div class="yahoo-style-wrap" style="font-family:arial;font-size:16px;"><div dir="ltr" data-setdir="false">Hi out there,</div><div dir="ltr" data-setdir="false">&nbsp;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" data-setdir="false">Thanks in advance!</div><div dir="ltr" data-setdir="false">Paul Morro</div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false"><br></div></div></body></html>
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_______________________________________________
[email-masked]

http://www.fot-racing.com

Archive: http://autox.team.net/archive http://www.team.net/pipermail/fot

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From: vfracing--- via Fot <[email-masked]>
Date: Sat, 22 Feb 2025 14:19:17 +0000 (UTC)

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 Hi Paul;
Please find attached a spreadsheet I use to calculate compression ratio, or=
 to determine the head volume needed to get a particular ratio. =C2=A0Just =
fill in the information requested in the yellow cells and it should yield w=
hat you want. =C2=A0You will need to measure the volume of the combustion c=
hamber in the head (HV), cell F10. =C2=A0You should measure all of them bec=
ause there can be significant variation in the factory head and/or from val=
ve depression due to wear or prior valve jobs. =C2=A0Head volume measuremen=
t ("CCing") kits can be obtained from Summit Racing. =C2=A0You'll need to m=
easure over 50 cc, so get a big one. =C2=A0Any issues, feel free to call me=
. =C2=A0Eastern time.
Regards,
Phil Gott508 414 0256
    On Saturday, February 22, 2025 at 08:41:37 AM EST, Paul Morro via Fot <=
[email-masked]> wrote:  =20

 Hi out there,=C2=A0Would anyone out there have a compression ratio chart f=
or a High Port TR3 head? Or be able to share CR with respect to cylinder he=
ad thickness and bore? I'm building a street engine and would like a 9.5:1 =
CR.Thanks in advance!Paul Morro

com

 =20
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<html><head></head><body><div class=3D"ydp8812ca45yahoo-style-wrap" style=
=3D"font-family:arial;font-size:16px;"><div></div>
        <div dir=3D"ltr" data-setdir=3D"false">Hi Paul;</div><div dir=3D"lt=
r" data-setdir=3D"false"><br></div><div dir=3D"ltr" data-setdir=3D"false">P=
lease find attached a spreadsheet I use to calculate compression ratio, or =
to determine the head volume needed to get a particular ratio. &nbsp;Just f=
ill in the information requested in the yellow cells and it should yield wh=
at you want. &nbsp;You will need to measure the volume of the combustion ch=
amber in the head (HV), cell F10. &nbsp;You should measure all of them beca=
use there can be significant variation in the factory head and/or from valv=
e depression due to wear or prior valve jobs. &nbsp;Head volume measurement=
 ("CCing") kits can be obtained from Summit Racing. &nbsp;You'll need to me=
asure over 50 cc, so get a big one. &nbsp;Any issues, feel free to call me.=
 &nbsp;Eastern time.</div><div dir=3D"ltr" data-setdir=3D"false"><br></div>=
<div dir=3D"ltr" data-setdir=3D"false">Regards,</div><div dir=3D"ltr" data-=
setdir=3D"false"><br></div><div dir=3D"ltr" data-setdir=3D"false">Phil Gott=
</div><div dir=3D"ltr" data-setdir=3D"false">508 414 0256</div><div><br></d=
iv>
       =20
        </div><div id=3D"yahoo_quoted_0828330009" class=3D"yahoo_quoted"><d=
iv class=3D"yahoo-style-wrap" style=3D"font-family:arial;font-size:16px;">
            <div style=3D"font-family:'Helvetica Neue', Helvetica, Arial, s=
ans-serif;font-size:13px;color:#26282a;">
               =20
                <div class=3D"quoted-text-header">
                        On Saturday, February 22, 2025 at 08:41:37 AM EST, =
Paul Morro via Fot &lt;[email-masked]&gt; wrote:
                    </div>
                </div><div style=3D"font-family:'Helvetica Neue', Helvetica=
, Arial, sans-serif;font-size:13px;color:#26282a;border-left: 1px solid #cc=
c;padding-left: 8px;margin: 0px 0px 0px 8px" class=3D"inline_reply_quote_co=
ntainer">
                <div><br></div><div><br></div>
                <div><div id=3D"yiv6852371742"><div><div style=3D"font-fami=
ly:arial;font-size:16px;" class=3D"yiv6852371742yahoo-style-wrap"><div dir=
=3D"ltr">Hi out there,</div><div dir=3D"ltr">&nbsp;Would anyone out there h=
ave 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=3D"ltr">Thanks in advance!=
</div><div dir=3D"ltr">Paul Morro</div><div dir=3D"ltr"><br></div><div dir=
=3D"ltr"><br></div></div></div></div>______________________________________=
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