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Old 11-07-2007, 16:05   #1
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Water Temp Gauge for Yanmar 2GM20F

I have three 3/8-inch ports near the thermostat, water in and out to my water heater and a sender for my over-heat alarm is in the third, BUT, I want to install a “real” gauge. Teeing off any of the ports for separate senders seems clunky and there’s not much room. Any way to use the same sender for both the hi-temp alarm and gauge? Any recommendations for a gauge (100-220deg should be plenty)? I read that brass fittings would deteriorate with vibration. What other material would be better?
Thanks _/)
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Old 11-07-2007, 19:46   #2
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People like to do this alot. I see now need in it.

How many hours a day while motoring do you look at the gauge? why arn't you looking where you are goiing?

An over heating is a minor incident. yes with a gauge and constant monitoring you can catch things ahead of time. but I'd rather sail and fix it when it breaks, not wory about when it's going to break.

Just my $.02

To answer your question. No I don't know of any. Just get a gauge with a 3/8 MIP thread sender and use one of the ports or make a T to go in line to the water heater for the sender.
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Old 11-07-2007, 19:52   #3
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Quote:
An over heating is a minor incident. yes with a gauger and constant monitoring you can catch things ahead of time. but I'd rather sail and fix it when it breaks, not wory about when it's going to break.
I'll agree with Pat. Don't sweat the dumb stuff. When you overheat you'll see lots of signals. If you catch it soon no problem. There are a lot of things that can go wrong but not all of them deserve this much detail. Sometimes the bigger picture is what matters more.
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Old 12-07-2007, 03:45   #4
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ENGINE TEMPERATURE GAUGE/SENSORs c/w AUDIBLE ALARM

Aqualarm Engine Overheat 20118 20118 Detector: AQUALARM :: 20118 Engine Overheat Detector, 12v,24, 32v $23.00

CruzPro T60: CruzPro T60 Digital Water Temperature Gauge and Alarm

Engine Watchdog TM2: ENGINE WATCHDOG TM2, Engine Coolant Temperature Sensor, Gauge and Alarm

Vetus Exhaust Temperature Alarm 85020: Vetus - Exhaust Temperature Alarm
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Old 12-07-2007, 17:10   #5
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Thanks for the feedback. It may seem minor but I’ve got one neighbor who lost his engine by picking up a plastic bag in the raw water intake. Another neighbor calls them “$6,000 jelly fish”!
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Old 12-07-2007, 18:34   #6
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A GM series can stand a short overheat like that without damage. The only way I can think a bag would cause that much damage would be if the alarms were inop on the boat.
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