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This is typical of many American cars of that era as well.=C2=A0 There is =
a sensor that has two nipples as you noted.=C2=A0 One connects to the vacuu=
m source and the other connects to the vacuum motor on the snorkel.=C2=A0 I=
don't know where the vacuum source is but=C2=A0 it might be a tee on some =
other vacuum line or it might be a dedicated nipple on the intake.=C2=A0=20
I have some spare bits from a TR7, I can have a look in the morning.
=20
Dave=20
=20
=20
-----Original Message-----
From: Tom Walling <pdqtr6@comcast.net>
To: triumphs@autox.team.net <triumphs@autox.team.net>
Sent: Tue, Jun 27, 2023 5:12 pm
Subject: [TR] TR7 question
I'm an "old hand" with the earlier TRs, having owned a TR3 and a TR6 for=
many years, but I now find myself in new territory with a 1979 TR7 in my g=
arage. =C2=A0 First question (of many to come) for the list: There is a=
vacuum motor attached to a heat sensor to open and close a flap in the air=
intake to prevent carburetor icing I think. I can see that the sensor conn=
ects to the vacuum motor with a rubber hose, but where does the vacuum come=
from? The sensor has 2 nipples, and it probably doesn't matter which is co=
nnected to the source or the motor, but what is the source of the vacuum? I=
t must be either the intake manifold or one of the carburetors, but where? =
=C2=A0 Interestingly, the Rimmer Bros. catalog shows a short piece of t=
ubing that they think connects the 2 sensor nipples! And of course they don=
't stock it anyway. =C2=A0 ** triumphs@autox.team.net **
Archive: http://www.team.net/pipermail/triumphs=C2=A0 http://www.team.net/a=
rchive
sey@cs.com
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<div style="color:black;font: 12pt Arial, Helvetica, sans-serif;">
<div> <font size="3">This is typical of many American cars of that era as
well. There is a sensor that has two nipples as you noted. One
connects to the vacuum source and the other connects to the vacuum motor on the
snorkel. I don't know where the vacuum source is but it might be a
tee on some other vacuum line or it might be a dedicated nipple on the
intake. <br>
</font></div>
<div><font size="3"><br>
</font></div>
<div><font size="3">I have some spare bits from a TR7, I can have a look in the
morning.<br>
</font></div>
<div> <br>
</div>
<div style="clear:both">
<div style="color:black;font:12pt Arial, Helvetica, sans-serif;">
<div style="color:black;font:12pt Arial, Helvetica, sans-serif;">
<div><font size="4">Dave <br>
</font></div>
<div><span style="font-size:10.0pt;font-family:sans-serif;color:black;"><br>
</span></div>
<br>
</div>
</div>
</div>
<div> <br>
</div>
<div> <br>
</div>
<div style="font-family:arial,helvetica;font-size:10pt;color:black"><font
size="2">-----Original Message-----<br>
From: Tom Walling <pdqtr6@comcast.net><br>
To: triumphs@autox.team.net <triumphs@autox.team.net><br>
Sent: Tue, Jun 27, 2023 5:12 pm<br>
Subject: [TR] TR7 question<br>
<br>
<div id="yiv8227956237">
<div>
<div style="font-size:12pt;font-family:helvetica, arial,
sans-serif;color:#333333;" class="yiv8227956237default-style">
<span style="font-family:helvetica;font-size:12pt;">I'm an "old hand" with
the earlier TRs, having owned a TR3 and a TR6 for many years, but I now find
myself in new territory with a 1979 TR7 in my garage.</span>
</div>
<div style="font-size:12pt;font-family:helvetica, arial,
sans-serif;color:#333333;" class="yiv8227956237default-style">
</div>
<div style="font-size:12pt;font-family:helvetica, arial,
sans-serif;color:#333333;" class="yiv8227956237default-style">
<span style="font-family:helvetica;font-size:12pt;">First question (of many
to come) for the list: There is a vacuum motor attached to a heat sensor to
open and close a flap in the air intake to prevent carburetor icing I think. I
can see that the sensor connects to the vacuum motor with a rubber hose, but
where does the vacuum come from? The sensor has 2 nipples, and it probably
doesn't matter which is connected to the source or the motor, but what is the
source of the vacuum? It must be either the intake manifold or one of the
carburetors, but where?</span>
</div>
<div style="font-size:12pt;font-family:helvetica, arial,
sans-serif;color:#333333;" class="yiv8227956237default-style">
</div>
<div style="font-size:12pt;font-family:helvetica, arial,
sans-serif;color:#333333;" class="yiv8227956237default-style">
<span style="font-family:helvetica;font-size:12pt;">Interestingly, the
Rimmer Bros. catalog shows a short piece of tubing that they think connects the
2 sensor nipples! And of course they don't stock it anyway.</span>
</div>
<div style="font-size:12pt;font-family:helvetica, arial,
sans-serif;color:#333333;" class="yiv8227956237default-style">
</div>
</div>
</div>
** <a ymailto="mailto:triumphs@autox.team.net";
href="mailto:triumphs@autox.team.net";>triumphs@autox.team.net</a> **<br>
<br>
Archive: <a href="http://www.team.net/pipermail/triumphs";
target="_blank">http://www.team.net/pipermail/triumphs</a> <a
href="http://www.team.net/archive";
target="_blank">http://www.team.net/archive</a><br>
<br>
</font></div>
</div>
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** triumphs@autox.team.net **
Archive: http://www.team.net/pipermail/triumphs http://www.team.net/archive
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