Subject: [Fot] Head question on TR-6

From: "Spitfire Racing" <[email-masked]>
Date: Sun, 18 Oct 2015 09:32:47 -0400

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For the past 20 years or so I have had a NOS Circle B 6 cylinder head on a
shelf in the parts room. For some reason I assumed it was for a TR-6 and
would be ideal as a starting point for an eventual TR-250 project. Must to
my disappointment I find it is a Mk2 GT-6 head. Likely it would afford too
high a CR sitting on a 2500cc engine in stock condition. 

The question is... Is it unreasonable to think I can open up the combustion
chamber to bring the CR down to ~ 10.5:1 using it on a 2500cc application ?

Any of you have the combustion chamber volume to achieve this using flat top
pistons ??

Anyone out there have done this before? No point in trying to reinvent the
wheel.  Serial number on head is 517528.

Snow on the ground this AM and temps in the 20s has me already in the winter
project mode!

Thanks,

Russ Moore

Spitfire #49

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vlink=3Dpurple><div class=3DWordSection1><p class=3DMsoNormal><span =
style=3D'font-size:14.0pt'>For the past 20 years or so I have had a NOS =
Circle B 6 cylinder head on a shelf in the parts room. For some reason I =
assumed it was for a TR-6 and would be ideal as a starting point for an =
eventual TR-250 project. Must to my disappointment I find it is a Mk2 =
GT-6 head. Likely it would afford too high a CR sitting on a 2500cc =
engine in stock condition. <o:p></o:p></span></p><p =
class=3DMsoNormal><span style=3D'font-size:14.0pt'>The question =
is&#8230;&#8230;&#8230; Is it unreasonable to think I can open up the =
combustion chamber to bring the CR down to ~ 10.5:1 using it on a 2500cc =
application ?<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:14.0pt'>Any of you have the combustion chamber volume =
to achieve this using flat top pistons ??<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:14.0pt'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span style=3D'font-size:14.0pt'>Anyone out there have =
done this before? No point in trying to reinvent the wheel. &nbsp;Serial =
number on head is 517528.<o:p></o:p></span></p><p =
class=3DMsoNormal><span style=3D'font-size:14.0pt'>Snow on the ground =
this AM and temps in the 20s has me already in the winter project =
mode!<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:14.0pt'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:14.0pt'>Thanks,<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:14.0pt'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span style=3D'font-size:14.0pt'>Russ =
Moore<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:14.0pt'>Spitfire #49<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:14.0pt'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:14.0pt'><o:p>&nbsp;</o:p></span></p></div></body></htm=
l>
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_______________________________________________
[email-masked]

http://www.fot-racing.com

Archive: http://www.team.net/archive

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From: "Jim Gray" <[email-masked]>
Date: Sun, 18 Oct 2015 13:37:45 -0600

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Russ,

Yes you can adjust the volume that way but you can always go to a thicker
head gasket to get you there. You also have to know the deck height of the
block

it's going on.

jim g

  _____  

From: Fot [mailto:[email-masked]] On Behalf Of Spitfire Racing
Sent: Sunday, October 18, 2015 7:33 AM
To: 'Fot'
Subject: [Fot] Head question on TR-6

Thanks,

Russ Moore

Spitfire #49

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<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'>Russ,<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'>Yes you can adjust the volume that =
way but
you can always go to a thicker head gasket to get you there. You also =
have to
know the deck height of the block<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'>it&#8217;s going =
on.<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'>jim g<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'><o:p>&nbsp;</o:p></span></font></p>

<div>

<div class=3DMsoNormal align=3Dcenter style=3D'text-align:center'><font =
size=3D3
face=3D"Times New Roman"><span =
style=3D'font-size:12.0pt;font-family:"Times New Roman"'>

<hr size=3D2 width=3D"100%" align=3Dcenter tabindex=3D-1>

</span></font></div>

<p class=3DMsoNormal><b><font size=3D2 face=3DTahoma><span =
style=3D'font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font =
size=3D2
face=3DTahoma><span style=3D'font-size:10.0pt;font-family:Tahoma'> Fot
[mailto:[email-masked]] <b><span =
style=3D'font-weight:bold'>On Behalf
Of </span></b>Spitfire Racing<br>
<b><span style=3D'font-weight:bold'>Sent:</span></b> Sunday, October 18, =
2015
7:33 AM<br>
<b><span style=3D'font-weight:bold'>To:</span></b> 'Fot'<br>
<b><span style=3D'font-weight:bold'>Subject:</span></b> [Fot] Head =
question on
TR-6</span></font><font size=3D3 face=3D"Times New Roman"><span =
style=3D'font-size:
12.0pt;font-family:"Times New Roman"'><o:p></o:p></span></font></p>

</div>

<p class=3DMsoNormal><font size=3D2 face=3DCalibri><span =
style=3D'font-size:11.0pt'><o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoNormal><font size=3D4 face=3DCalibri><span =
style=3D'font-size:14.0pt'>For
the past 20 years or so I have had a NOS Circle B 6 cylinder head on a =
shelf in
the parts room. For some reason I assumed it was for a TR-6 and would be =
ideal
as a starting point for an eventual TR-250 project. Must to my =
disappointment I
find it is a Mk2 GT-6 head. Likely it would afford too high a CR sitting =
on a
2500cc engine in stock condition. <o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D4 face=3DCalibri><span =
style=3D'font-size:14.0pt'>The
question is&#8230;&#8230;&#8230; Is it unreasonable to think I can open =
up the
combustion chamber to bring the CR down to ~ 10.5:1 using it on a 2500cc
application ?<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D4 face=3DCalibri><span =
style=3D'font-size:14.0pt'>Any
of you have the combustion chamber volume to achieve this using flat top
pistons ??<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D4 face=3DCalibri><span =
style=3D'font-size:14.0pt'><o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoNormal><font size=3D4 face=3DCalibri><span =
style=3D'font-size:14.0pt'>Anyone
out there have done this before? No point in trying to reinvent the =
wheel. &nbsp;Serial
number on head is 517528.<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D4 face=3DCalibri><span =
style=3D'font-size:14.0pt'>Snow
on the ground this AM and temps in the 20s has me already in the winter =
project
mode!<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D4 face=3DCalibri><span =
style=3D'font-size:14.0pt'><o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoNormal><font size=3D4 face=3DCalibri><span =
style=3D'font-size:14.0pt'>Thanks,<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D4 face=3DCalibri><span =
style=3D'font-size:14.0pt'><o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoNormal><font size=3D4 face=3DCalibri><span =
style=3D'font-size:14.0pt'>Russ
Moore<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D4 face=3DCalibri><span =
style=3D'font-size:14.0pt'>Spitfire
#49<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D4 face=3DCalibri><span =
style=3D'font-size:14.0pt'><o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoNormal><font size=3D4 face=3DCalibri><span =
style=3D'font-size:14.0pt'><o:p>&nbsp;</o:p></span></font></p>

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From: [email-masked]
Date: Mon, 19 Oct 2015 11:52:53 -0400

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From: Bud Rolofson <[email-masked]>
To: Spitfire Racing <[email-masked]>
Cc: Fot <[email-masked]>
Sent: Mon, Oct 19, 2015 10:49 am
Subject: Re: [Fot] Head question on TR-6

Russ, 
I have a TR6 circle B head (not NOS) sitting on the shelf if you decide to go another way.
Bud

Sent from my Commodore 64

"Sent from my Commodore 64"...

Now...that's funny.

Bill Dentinger

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<font color='black' size='2' face='arial'>
<div>From: Bud Rolofson &lt;[email-masked]&gt;<br>
To: Spitfire Racing &lt;[email-masked]&gt;<br>
Cc: Fot &lt;[email-masked]&gt;<br>
Sent: Mon, Oct 19, 2015 10:49 am<br>
Subject: Re: [Fot] Head question on TR-6<br>

</div>

<div style="color: black; font-family: arial,helvetica; font-size: 10pt;">
<div id="AOLMsgPart_1.2_90823803-77ef-4f81-a3b3-64bf8f1d00f1">

<div class="aolReplacedBody" dir="auto">
<div>Russ,&nbsp;</div>

<div>I have a TR6 circle B head (not NOS) sitting on the shelf if you decide to go another way.</div>

<div>Bud<br>
<br>
Sent from my Commodore 64</div>

<div><br>
"Sent from my Commodore 64"...</div>

<div>&nbsp;</div>

<div>Now...that's funny.</div>

<div>&nbsp;</div>

<div>Bill Dentinger</div>

<div>&nbsp;</div>
</div>
</div>

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