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<div class="moz-cite-prefix">On 11/26/18 12:14 PM, Andrew Uprichard
wrote:<br>
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<p class="MsoNormal"><span style="font-family:"Times New
Roman","serif"">When it comes to the
4-cylinder TR models, I am aware of four variations on
cylinder head design: the original low-port TR2 head, the
“le Mans” head which was a variation on the low port design,
the high port head which came with most of the TR3s and the
TR4 head with the smaller intake aperture.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Times New
Roman","serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Times New
Roman","serif"">But someone was talking to me
the other day about a variation in the high port TR3 head.
According to this guy, there was a variation in the
thermostat housing, some of which were more sloping than
rounded. He claimed the sloped design was more attractive
as it lended itself to more shaving and thus a better, high
compression engine.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Times New
Roman","serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Times New
Roman","serif"">I must admit I had never
heard about this. I have three heads sitting in my barns
and all have what appears to be the same, rounded underneath
to the thermostat housing.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Times New
Roman","serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Times New
Roman","serif"">Has anyone heard of this?<br>
</span></p>
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<p>Yes I have & wrote a web page</p>
<p><a class="moz-txt-link-freetext" href="http://www.tr3a.info/FAQ_heads.htm">http://www.tr3a.info/FAQ_heads.htm</a></p>
TeriAnn<br>
<div class="moz-signature">-- <br>
<p align="center"><a href="http://overlandtravel.us">Book - The
Essential Guide to Overland Travel in the United States and
Canada</a>
<br>
2 years to write and 38 years of travel and camping to learn
what to write<br>
<br>
<b>Because the world beckons and life waits for no one</b></p>
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