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Old 12-13-2015, 10:03 PM   #41
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I presumably have a high-engine-room-temperature alarm. It has never "gone off."

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Old 12-13-2015, 10:06 PM   #42
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Am I the only one here without ER fans on a diesel boat?
Why worry? Doubt you've ever had engine-overheating.
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Old 12-13-2015, 10:31 PM   #43
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Why worry? Doubt you've ever had engine-overheating.
Not worried. Just asking.
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Old 12-14-2015, 12:22 AM   #44
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It's got nothing to do with the engines over heating. It can have everything to do with the engines getting the correct amount of ambient temperature intake air.
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Old 12-14-2015, 12:34 AM   #45
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It's got nothing to do with the engines over heating. It can have everything to do with the engines getting the correct amount of ambient temperature intake air.
Whatever the position about that, after several hours running it is noticeably less hot in my ER if I use the blower than if I don`t. It is the difference between happily going in there to do something, and deciding it is too hot to be in there safely and not doing that something until it cools down somewhat.
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Old 12-14-2015, 12:36 AM   #46
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Quote:
Originally Posted by FlyWright View Post
Am I the only one here without ER fans on a diesel boat?
Nope. Count me in as well. Doesn't need one - won't get one. Just saying'...
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Old 12-14-2015, 01:08 AM   #47
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Nope. Count me in as well. Doesn't need one - won't get one. Just saying'...
Another "single vs twin" arguing point?
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Old 12-14-2015, 01:22 AM   #48
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A diesel at light load does not care if intake air is 40F or 140F. At higher loads the airflow is so high that temps at intake drop to near ambient. Blowers on diesel boats are pretty useless during operation unless huge, and still pretty pointless there. Helpful after shutdown to cool ER down, that's about it.

I run my blowers on summer days with gennie on to help get the heat from the gennie electrical end out, but don't bother if main engine is on. Usually one or the other is running, rare for both.
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