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When #1 is TDC compression #4 is at TDC at the transition between the exhaust
and intake stroke so those valves will be nearly closed but completely closed.
The other two will be at BDC, one of which is commencing the exhaust stroke and
the other is commencing the compression stroke. One will be closing off the
intake valve and the other will be just opening the exhaust valve. So I'd say
no, none of the other cylinders will have the valves closed to the point where
you can set the gap. All three will have one or more valves slightly open.
Dave Massey
-----Original Message-----
From: dave n <dave@ranteer.com>
To: triumphs <triumphs@autox.team.net>
Sent: Thu, Jul 23, 2015 3:09 pm
Subject: [TR] tr4 engine
on a tr4 engine, when the first cylinder is at top dead center, the two valves
are both completely closed.
do any other cylinders have both valves closed? or are they all at various
stages?
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<font color='black' size='4' face='Arial, Helvetica, sans-serif'><font
size="4">When #1 is TDC compression #4 is at TDC at the transition between the
exhaust and intake stroke so those valves will be nearly closed but completely
closed. The other two will be at BDC, one of which is commencing the
exhaust stroke and the other is commencing the compression stroke. One
will be closing off the intake valve and the other will be just opening the
exhaust valve. So I'd say no, none of the other cylinders will have the
valves closed to the point where you can set the gap. All three will have
one or more valves slightly open.</font>
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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: dave n <dave@ranteer.com><br>
To: triumphs <triumphs@autox.team.net><br>
Sent: Thu, Jul 23, 2015 3:09 pm<br>
Subject: [TR] tr4 engine<br>
<br>
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on a tr4 engine, when the first cylinder is at top dead center, the two valves
are both completely closed.
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</div>
<div>
do any other cylinders have both valves closed? or are they all at
various stages?
</div>
</div>
</div>
</div>
</div>
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#000;background-color: #fff;">
<pre style="font-size: 9pt;"><tt>
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removedlink__262d9240-d7cb-4737-8b33-c9bc4bd095f2__href="http://autox.team.net/mailman/options/triumphs/dave1massey@cs.com";
target="_blank"></a>
</tt></pre>
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