[Fot] Anti Runon Valve ADU9535

[sherry robyn]

With my TR6 there is still a bit of run on even with the valve.  It doesn't
seem 
to be the end of the world to kill it with a combination of clutch
out brake 
in.  Jim




________________________________
From: Larry Young
<cartravel at pobox.com>
To: FOT at autox.team.net
Sent: Mon, August 6, 2012 5:13:08
PM
Subject: [Fot] Anti Runon Valve ADU9535

This question is not of interest
to racers, but my street TR250 has had a 
problem with run-on or dieseling
since leaded premium went away back in the 
1980s.  This has continued through
several carb rebuilds, many ignition 
configuration changes and recently an
engine rebuild.  During recent rebuild, I 
tried to remove any sharp areas
that might create hot spots and of course all 
the carbon has been removed,
but the problem still persists.  There is 
additional tuning I should and will
do such as carb rebuilds, carb needles, 
timing advance curves, etc., but I
suspect this problem will continue.  The 
solution for later Triumphs and
other British cars was the anti run-on valve.  
It appears that the simplest
retrofit would be to install a Rover/MG ADU9535 
valve.  Basically, the valve
opens when the ignition is turned off and floods 
the manifold with air making
the mixture too weak to support combustion.  Where 
do I find one of these
valves?  They do not appear to be available except on 
ebay.uk.
Larry
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