Jay---I thik all of the factory installed anti-run on valves are as you
described. The aftermarket ones from England do the job another way.
Probably not as neatly.
Dick
Jay wrote:
The anti-run valves do work well, but the circuit is a bit different (at
least on my '73). The valve energizes when the ignition has been turned
off but there is still oil pressure (the valve is wired to the oil
pressure switch). This connects the vacuum system to the float chambers
of the carbs, stopping any further flow of gas. When the oil pressure
drops further, the valve de-energizes.
You would need the proper carbs with float bowl vents (which themselves
are operated by a small valve) to replicate the original setup.
Jay
'73 TR6
On Aug 9, 2005, at 5:59 PM, Sally or Dick Taylor wrote:
Jim---The valves as said to work well. I understand they are now
hard to come by, but there is a place in England that sells something
that supposedly does the same thing as these valves. The mention of the
option is shown in Roger Williams Restoring....book. Looks simple enough
to fit it to the intake manifold. It is wired to open a large air intake
when the ignition key is shut off. That dilutes the air/fuel mix enough
to cause the engine to stop, plus vacuum drops to zero. Installing
either of these would only be worth the effort if the dieseling is
frequent and annoying. ........
Dick
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