Subject: Re: [TR] Compression

From: DAVID MASSEY <[email-masked]>
Date: Tue, 16 Oct 2018 07:55:42 -0400

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 Mark, for some reason, some messages get stripped of LF's and CR's and an =
ascii table such as the one you sent don't display properly.  I took the li=
berty of putting the data into a spreadsheet and taking an image attached b=
elow.

Did I get this right?  Also note I added a column for per-cylinder displace=
ment which is critical for calculating compression ratio.

=20

=20

Dave Massey

=20

=20

-----Original Message-----
From: Mark J Bradakis <[email-masked]>
To: triumphs <[email-masked]>
Sent: Mon, Oct 15, 2018 7:31 pm
Subject: Re: [TR] Compression

On 10/15/18 9:09 AM, Carl Carlson wrote:> Can anyone tell me where the TR25=
0 & early TR6 engine gets it=E2=80=99s high compression as the bore & strok=
e is the same as the latter engine?>Application       CR    Thickness   CC =
depth   CC volumeGT6 Mk I        9.50GT6+            9.25     3.450     0.4=
25       34GT6 Mk III      9.25     3.32       .47        37(early)GT6 Mk I=
II      8.0      3.40       .55        44(late)TR250, TR6      8.5      3.5=
5       .60        48.5TR6 middle      7.75     3.54       .68        55TR6=
 late        7.5      3.55       .70        57TR6 race 1     10.25     3.37=
5      .52        41.6TR6 race 2     12.3      3.295      .44        33GT6 =
race 1     10.75     3.31       .385       30GT6 race 2     12.75     3.22 =
      .300       24.4** [email-masked] **Donate: http://www.team.n=
et/donate.htmlArchive: http://www.team.net/pipermail/triumphs  http://www.t=
eam.net/archive=20

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<font color=3D'black' size=3D'3' face=3D'Arial, Helvetica, sans-serif'>
<div> <font size=3D"3">Mark, for some reason, some messages get stripped of=
 LF's and CR's and an ascii table such as the one you sent don't display pr=
operly.&nbsp; I took the liberty of putting the data into a spreadsheet and=
 taking an image attached below.</font></div>

<div><font size=3D"3"><br>
</font></div>

<div><font size=3D"3"><img src=3D"data:image/png;base64,iVBORw0KGgoAAAANSUh=
MEPf4AtBDo4GUMS1sHN5LpoOcJevwBaCHQwcsYlrYOQif+B4I5wxTBkZHWAAAAAElFTkSuQmCC"=
 alt=3D""><br>
</font></div>

<div><br>
</div>

<div><font size=3D"3">Did I get this right?&nbsp; Also note I added a colum=
n for per-cylinder displacement which is critical for calculating compressi=
on ratio.</font><br>
<font size=3D"3"></font></div>

<div> <br>
</div>

<div> <br>
</div>

<div style=3D"clear:both"><font size=3D"4">Dave Massey</font><br>
<br>
</div>

<div> <br>
</div>

<div> <br>
</div>

<div style=3D"font-family:arial,helvetica;font-size:10pt;color:black">-----=
Original Message-----<br>
From: Mark J Bradakis &lt;[email-masked]&gt;<br>
To: triumphs &lt;[email-masked]&gt;<br>
Sent: Mon, Oct 15, 2018 7:31 pm<br>
Subject: Re: [TR] Compression<br>
<br>
On 10/15/18 9:09 AM, Carl Carlson wrote:
&gt; Can anyone tell me where the TR250 &amp; early TR6 engine gets it=E2=
=80=99s high compression as the bore &amp; stroke is the same as the latter=
 engine?
&gt;
Application&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; CR&nbsp;&nbsp;&nbsp; Thickn=
ess&nbsp;&nbsp; CC depth&nbsp;&nbsp; CC volume

GT6 Mk I&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 9.50
GT6+&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 9.25=
&nbsp;&nbsp;&nbsp;&nbsp; 3.450&nbsp;&nbsp;&nbsp;&nbsp; 0.425&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp; 34
GT6 Mk III&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 9.25&nbsp;&nbsp;&nbsp;&nbsp; 3.32&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; .47&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp; 37
(early)
GT6 Mk III&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 8.0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
3.40&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; .55&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp; 44
(late)
TR250, TR6&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 8.5&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
3.55&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; .60&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp; 48.5
TR6 middle&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 7.75&nbsp;&nbsp;&nbsp;&nbsp; 3.54&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; .68&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp; 55
TR6 late&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 7.5&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp; 3.55&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; .70&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp; 57
TR6 race 1&nbsp;&nbsp;&nbsp;&nbsp; 10.25&nbsp;&nbsp;&nbsp;&nbsp; 3.375&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp; .52&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 41.=
6
TR6 race 2&nbsp;&nbsp;&nbsp;&nbsp; 12.3&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 3.295=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; .44&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
; 33
GT6 race 1&nbsp;&nbsp;&nbsp;&nbsp; 10.75&nbsp;&nbsp;&nbsp;&nbsp; 3.31&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; .385&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 30
GT6 race 2&nbsp;&nbsp;&nbsp;&nbsp; 12.75&nbsp;&nbsp;&nbsp;&nbsp; 3.22&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; .300&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 24.=
4

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