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<div> <font size="3">I wonder if Kas' tuning manual has that information.  I have his TR6 manual but nothing on the TR3/4.</font><br>
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<div style="clear:both"><font size="4">Dave Massey</font><br>
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<div style="font-family:arial,helvetica;font-size:10pt;color:black">-----Original Message-----<br>
From: Dan Cronin <adcronin@mi.rr.com><br>
To: DAVID MASSEY <dave1massey@cs.com><br>
Cc: mark <mark@bradakis.com>; Triumph List <triumphs@autox.team.net><br>
Sent: Tue, Oct 16, 2018 9:52 am<br>
Subject: Re: [TR] Compression<br>
<br>


<div id="AOLMsgPart_2_29fea728-0025-4384-b866-67be3c15112f">

<div class="aolReplacedBody" style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;"><font color="#4f7a28">Anyone have this information for the TR3-4a series motors?</font>
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<div>On Oct 16, 2018, at 7:55 AM, DAVID MASSEY <<a target="_blank" rel="noopener noreferrer" removedlink__00e89340-e356-40b2-869c-575a8579ab97__href="mailto:dave1massey@cs.com">dave1massey@cs.com</a>> wrote:</div>
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<div> <font size="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 properly.  I took the liberty of putting the data into a spreadsheet and taking an image attached below.</font></div>



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"><br>

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<div><font size="3">Did I get this right?  Also note I added a column for per-cylinder displacement which is critical for calculating compression ratio.</font><br>

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

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<div style="font-family: arial, helvetica; font-size: 10pt;">-----Original Message-----<br>

From: Mark J Bradakis <<a target="_blank" rel="noopener noreferrer" removedlink__00e89340-e356-40b2-869c-575a8579ab97__href="mailto:mark@bradakis.com">mark@bradakis.com</a>><br>

To: triumphs <<a target="_blank" rel="noopener noreferrer" removedlink__00e89340-e356-40b2-869c-575a8579ab97__href="mailto:triumphs@autox.team.net">triumphs@autox.team.net</a>><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:
> Can anyone tell me where the TR250 & early TR6 engine gets it’s high compression as the bore & stroke is the same as the latter engine?
>
Application       CR    Thickness   CC depth   CC volume

GT6 Mk I        9.50
GT6+            9.25     3.450     0.425       34
GT6 Mk III      9.25     3.32       .47        37
(early)
GT6 Mk III      8.0      3.40       .55        44
(late)
TR250, TR6      8.5      3.55       .60        48.5
TR6 middle      7.75     3.54       .68        55
TR6 late        7.5      3.55       .70        57
TR6 race 1     10.25     3.375      .52        41.6
TR6 race 2     12.3      3.295      .44        33
GT6 race 1     10.75     3.31       .385       30
GT6 race 2     12.75     3.22       .300       24.4

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