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Old 03-25-2013, 11:51 AM
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edwardc edwardc is offline
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My gauges are also easy line-of-sight, and I monitor them continuously.

But I also have a high-temp alarm, with the sensor mounted in the coolant outflow from the manifold. The setpoint is fixed pretty low at 200 degrees (my normal operating point is 180). I figure an overheat condition could escalate rapidly, and it would only take a few minutes of inattention to miss it without the alarm.

The only time I ever get a "nuisance" alarm is if I shut down the engine immediately after cruising in gear. The temp will rise to over 200, and the alarm will go off briefly when I restart. Simply running in neutral at idle for 1 min before shutting down (my normal practice) eliminates this.

Although I don't have a low oil pressure alarm, the Oil Pressure Safety Switch (OPSS) will shut down my electric fuel pump, which should kill the engine in the time it takes to empty the float bowl (30-60 sec?).

I have a friend who has alarms on everything, and he took great pains to insure that each one had a distinctive sound and could not be confused with any other one!
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1977 Pearson P-323 "Dolce Vita"
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