[Fot] Anti Runon Valve ADU9535

[EDWARD BARNARD]

Larry: Send me your address and one will miraculously appear in your mail box
from the run-on gods.
Life is good:O)
-ED-

--- On Mon, 8/6/12, Larry Young <cartravel at pobox.com> wrote:


From: Larry Young <cartravel at pobox.com>
Subject: [Fot] Anti Runon Valve ADU9535
To: FOT at autox.team.net
Date: Monday, August 6, 2012, 6:52 PM


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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