[C320-list] Bilge Blower
J Z
jeffzinselmeyer at hotmail.com
Wed Dec 15 17:13:54 PST 2021
When I replaced mine, I am fairly certain it was with a "Johnson Pumps" 12volt blower. I have been very happy with it, not noise and seems to move a lot of air, way more than the original.
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Today's Topics:
1. Bilge blower (Joe M)
2. Re: Bilge blower (Troy Dunn)
3. Re: Bilge blower (Troy Dunn)
4. Re: Bilge blower (Joe M)
5. Re: Bilge blower (Jack Brennan)
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Message: 1
Date: Wed, 15 Dec 2021 10:17:04 -0500
From: Joe M <smith.blazer.72 at gmail.com>
To: c320-list at lists.catalina320.com
Subject: [C320-list] Bilge blower
Message-ID:
<CAO+iX3A-q1TVzvz9yA8-BT0KnMS9xvkCGcEojYZ=yQDL82X0rw at mail.gmail.com>
Content-Type: text/plain; charset="UTF-8"
I run mibe all the time when engine is running. It us loud and 20 years
old.
Looking for a continuous duty rated, quiet replacement. On line shopping
isn?t going well narrowing it down.
Any recommendations from the group?
Thanks.
Joe 2002 C320 hull #902
------------------------------
Message: 2
Date: Wed, 15 Dec 2021 11:09:06 -0500
From: Troy Dunn <troutwarrior at gmail.com>
To: C320-List at catalina320.com
Cc: c320-list at lists.catalina320.com
Subject: Re: [C320-list] Bilge blower
Message-ID:
<CA+rGV8Z4WTaHu5HT2axK5MB52s9aVY7EhSBCgmd3GEpy6LHCBw at mail.gmail.com>
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Joe
What is your goal for continuous operation? Is it reduced engine room
temps, or something else?
I have been studying this problem solely from the perspective of getting
cooler air to the alternator and subsequently removing the heat from said
alternator.
I don?t think the original bilge blower was designed for continuous
operation nor does it seem to move much air and it?s noisy as all get
out?as you?ve stated.
I think the solution is higher cfm 12V fans designed for quietly moving
more air. Probably a squirrel cage centrifugal blower. I haven?t got
past trying to design a duct system to get the air directed at the
alternator so I haven?t focused too much on the actual blower yet.
Cheers
Troy Dunn
Hull#514
------------------------------
Message: 3
Date: Wed, 15 Dec 2021 11:09:06 -0500
From: Troy Dunn <troutwarrior at gmail.com>
To: C320-List at catalina320.com
Cc: c320-list at lists.catalina320.com
Subject: Re: [C320-list] Bilge blower
Message-ID:
<CA+rGV8Z4WTaHu5HT2axK5MB52s9aVY7EhSBCgmd3GEpy6LHCBw at mail.gmail.com>
Content-Type: text/plain; charset="UTF-8"
Joe
What is your goal for continuous operation? Is it reduced engine room
temps, or something else?
I have been studying this problem solely from the perspective of getting
cooler air to the alternator and subsequently removing the heat from said
alternator.
I don?t think the original bilge blower was designed for continuous
operation nor does it seem to move much air and it?s noisy as all get
out?as you?ve stated.
I think the solution is higher cfm 12V fans designed for quietly moving
more air. Probably a squirrel cage centrifugal blower. I haven?t got
past trying to design a duct system to get the air directed at the
alternator so I haven?t focused too much on the actual blower yet.
Cheers
Troy Dunn
Hull#514
------------------------------
Message: 4
Date: Wed, 15 Dec 2021 14:22:33 -0500
From: Joe M <smith.blazer.72 at gmail.com>
To: C320-List at catalina320.com
Subject: Re: [C320-list] Bilge blower
Message-ID:
<CAO+iX3DExwQPvefyeYFMvHGn6k1N37jMdPUG+AXyQ3+WuW+3Hw at mail.gmail.com>
Content-Type: text/plain; charset="UTF-8"
I want to hot air out, fresh air being pulled in for engine as dealer told
me to leave it on running when I bought it 3 years ago. My first diesel,
first inboard, first sailboat. Previous boats of 30 years were all
outboards.
Joe 2002 C320 hull #902
On Wed, Dec 15, 2021 at 11:09 AM Troy Dunn <troutwarrior at gmail.com> wrote:
> Joe
>
> What is your goal for continuous operation? Is it reduced engine room
> temps, or something else?
>
> I have been studying this problem solely from the perspective of getting
> cooler air to the alternator and subsequently removing the heat from said
> alternator.
>
> I don?t think the original bilge blower was designed for continuous
> operation nor does it seem to move much air and it?s noisy as all get
> out?as you?ve stated.
>
> I think the solution is higher cfm 12V fans designed for quietly moving
> more air. Probably a squirrel cage centrifugal blower. I haven?t got
> past trying to design a duct system to get the air directed at the
> alternator so I haven?t focused too much on the actual blower yet.
>
> Cheers
>
> Troy Dunn
> Hull#514
>
------------------------------
Message: 5
Date: Wed, 15 Dec 2021 15:19:16 -0500
From: Jack Brennan <jackbrennan at bellsouth.net>
To: "C320-List at Catalina320.com" <C320-List at Catalina320.com>
Subject: Re: [C320-list] Bilge blower
Message-ID: <873172291.412522.1639599630744 at bellsouth.net>
Content-Type: text/plain; charset="utf-8"
Blowers originally came into use for gasoline engines, the idea being that you remove potentially explosive gases from the bilge before causing a spark by starting the engine. It has never been clear to me why Catalina installed the blowers in boats using diesel, which is not explosive.
If you have an extremely tight engine compartment, the diesel can run short of air. But I?ve never found that to be the case with my 320. The housings at front and rear are not air tight by any means. You can tell when an air shortage happens because the engine will not run properly.
I don?t think they?re necessary, and I?ve never used mine. They wouldn?t even remove much stink from the bilge because there is only a couple of small holes connecting the engine compartment to the main bilge.
Jack Brennan
Sonas, 1998 Catalina 320
Tierra Verde, Fl.
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