Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 27-12-2011, 09:43   #16
Senior Cruiser

Cruisers Forum Supporter

Join Date: Mar 2007
Location: Santa Cruz
Boat: Boatless Again
Posts: 4,335
re: Sailing Boat Engine Bilge Blower??? Use???

I have a flange-mounted bilge blower built into my Beneteau, and the prices for the Jabsco replacement are shocking--about 6 times what an in-line blower costs. I was able to find a non-Jabsco replacement in the Med for a whole lot less, otherwise I was planning to rip out the blower cage and install an in-line blower in the hose just upstream.

I now have a spare blower, because what usually happens is the bearings seize, and can be disassembled and lubricated. About every two years I swap out the blower and relubricate.
__________________

__________________
donradcliffe is offline   Reply With Quote
Old 27-12-2011, 10:17   #17
Senior Cruiser
 
Cheechako's Avatar

Cruisers Forum Supporter

Join Date: Aug 2006
Location: Skagit City, WA
Posts: 19,371
Re: Sailing Boat Engine Bilge Blower??? Use???

Many of my boats have had them. Keeping the engine room fresh is a good idea and it is amazing how hot the whole aft end of the boat stays after a long motor. In 40 years only had to replace one fan. Maybe you are just getting unlucky with the fans... are you sure about 12 amps? seems like a lot... Is the fan getting wet from water ingress somehow? You could put it on a separate switch so you could turn it on if motoring long or let it run a few minutes after motoring to remove the heat in southern lattitudes...
__________________

__________________
"I spent most of my money on Booze, Broads and Boats. The rest I wasted" - Elmore Leonard











Cheechako is offline   Reply With Quote
Old 27-12-2011, 10:21   #18
Moderator
 
Dockhead's Avatar

Cruisers Forum Supporter

Join Date: Mar 2009
Location: Cowes (Winter), Baltic (Summer) (the boat!); somewhere in the air (me!)
Boat: Cutter-Rigged Moody 54
Posts: 19,764
Re: Sailing Boat Engine Bilge Blower??? Use???

I don't think that engine compartment blowers are unusual on sailboats. I think that, as someone suggested, you would nearly always find them where you have a sealed engine compartment.

My boat has one -- but it does not run continuously. It is thermostatically controlled. The engine is in a tightly sealed soundproof compartment, so one can imagine that the heat needs to go somewhere.
__________________
Dockhead is online now   Reply With Quote
Old 27-12-2011, 11:35   #19
CF Adviser
Moderator Emeritus
 
Hud3's Avatar

Cruisers Forum Supporter

Join Date: Sep 2007
Location: Virginia
Boat: Island Packet 380, now sold
Posts: 8,929
Images: 49
Re: Sailing Boat Engine Bilge Blower??? Use???

I installed an exhaust blower for cooling the engine compartment after replacing the OEM alternator with a 210 amp model. I had it on a manual switch so I could turn it on when needed, which was most of the time in the Tropics.
__________________
Hud
Hud3 is offline   Reply With Quote
Old 27-12-2011, 12:31   #20
Registered User

Join Date: Aug 2010
Location: Beaufort, SC
Boat: 2004 Hunter 41 AC
Posts: 308
Re: Sailing Boat Engine Bilge Blower??? Use???

As a few other posters have indicated, the engine blower on diesel engines is for a different purpose than gas engines. Gas engines need to have the (heavier than air) volatile fumes vented before starting the engine. On diesels, it's a matter of getting rid of heat. So the hose goes to the bottom of the engine space on a gas engine, and vents from the top of a diesel engine. Also remember that alternators are affected by heat, so dissipating heat from the engine compartment can make your alt work more efficiently, and also last longer.

Scott
__________________
s/vPainkiller is offline   Reply With Quote
Old 27-12-2011, 12:45   #21
Senior Cruiser
 
DeepFrz's Avatar

Cruisers Forum Supporter

Join Date: Mar 2006
Location: Winnipeg
Boat: None at this time
Posts: 7,930
Re: Sailing Boat Engine Bilge Blower??? Use???

Wow, it pays to shop around. I didn't compare the prices on those two URL's that I posted until just now. The 10,000 hr. unit at Hodges Marine is listed at ~100. cheaper than the 5,000 hr unit at iBoats.
__________________
DeepFrz is offline   Reply With Quote
Old 27-12-2011, 13:38   #22
Registered User

Join Date: Feb 2011
Location: Istanbul
Boat: Jeanneau Sun Oddyssey 37 ft 2002
Posts: 61
Re: Sailing Boat Engine Bilge Blower??? Use???

Hi,
The ventilation pipes are standard for 37 ft Jeanneau's. Mine is a Sun Odyssey 2002. It is for cooling the engine cabin. A thermostate is connected to the system which closes the circuit when the heat is over 50 degrees C and the fan starts to work. It is to decrease the reflected heat outside the engine cabin which should be taken into consideration in hot climate. I advice you to keep it. We realised that it was really helping when the fan had a brakedown. The aft cabin get hotter than usual in the Med. Check for the thermostate which is located mostly in front of the fan. Probably your's is out of order and the fan is connected directly.
Idle
__________________
Idle is offline   Reply With Quote
Old 27-12-2011, 17:14   #23
Registered User

Join Date: Aug 2011
Location: Zeebrugge, Belgium
Boat: Jeanneau Voyage 37 ft
Posts: 254
Re: Sailing Boat Engine Bilge Blower??? Use???

Thanks a lot for all your interesting returns!
So indeed it seems to be a standard installation.
I will try to dismantle that Jabsco blower and check the DC motor, and I hope I will be able to repair it since it costed about 200.
It can only have about 250-300 hours of running time so it is not normal it DOA.
I think this happened last June when we were motoring for 10 hours on a night crossing of the English channel.

I will rewire it to a dedicated switch so I can use it with hot outside temperatures,, on long motoring stretches and 10-15 minutes after motoring to extract hot air and engine smell.

Happy new year, and good winds for you all in 2012!

Jan
__________________
Goudurix is offline   Reply With Quote
Old 01-01-2012, 08:58   #24
Marine Service Provider
 
rourkeh's Avatar

Join Date: Jun 2010
Location: Northern Caribbean
Boat: Cheoy Lee, 44 Cutter. Dolce Far Niente
Posts: 405
Re: Sailing Boat Engine Bilge Blower??? Use???

The answer to your question on "why do I need a blower is here

Marine Engines: Sail Boat Auxiliaries at Dockside Reports
__________________
rourkeh is offline   Reply With Quote
Old 01-01-2012, 09:07   #25
Registered User
 
bigpuff's Avatar

Join Date: Jan 2010
Location: picton N.Z.
Boat: Jeanneua 36
Posts: 159
Images: 46
Re: Sailing Boat Engine Bilge Blower??? Use???

i have bene411 and it has the same set up .iv not replaced the plowers now for some 2000hrs running ,dosnt effect running temp.(colder temp. down here thoughi wouldnt worry to mush about it though.
__________________
bigpuff is offline   Reply With Quote
Old 01-01-2012, 17:26   #26
Registered User

Join Date: Aug 2011
Location: Zeebrugge, Belgium
Boat: Jeanneau Voyage 37 ft
Posts: 254
Re: Sailing Boat Engine Bilge Blower??? Use???

Quote:
Originally Posted by rourkeh View Post
The answer to your question on "why do I need a blower is here

Marine Engines: Sail Boat Auxiliaries at Dockside Reports
Thanks! This was reassuring again!

So I will rebuild it - but switchable on demand, to be used on long motoring stretches or when it is really hot outside.
And I have to be sure this - not really cheap - Jabsco blower is DOA or can be brought "back to life" and can ensure at least 2000 hours.

Jan
__________________
Goudurix is offline   Reply With Quote
Old 02-01-2012, 06:20   #27
Moderator Emeritus
 
GordMay's Avatar

Join Date: Mar 2003
Location: Thunder Bay, Ontario - 48-29N x 89-20W
Boat: (Cruiser Living On Dirt)
Posts: 31,595
Images: 240
Re: Sailing Boat Engine Bilge Blower??? Use???

See also, some earlier discussions:

Engine Room Blower

Engine Ventilation: Skip it?
__________________
Gord May
"If you didn't have the time or money to do it right in the first place, when will you get the time/$ to fix it?"



GordMay is online now   Reply With Quote
Old 11-01-2012, 07:35   #28
Registered User

Join Date: Aug 2011
Location: Zeebrugge, Belgium
Boat: Jeanneau Voyage 37 ft
Posts: 254
Re: Sailing Boat Engine Bilge Blower??? Use???

Many thanks Gordon!

Jan
__________________

__________________
Goudurix is offline   Reply With Quote
Reply

Tags
bilge, engine, sailing

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
To Buy or to Wait . . . GorMac Dollars & Cents 13 30-11-2015 10:09
Refurbing / Refitting an Older boat - Advice and Ideas David_Old_Jersey Construction, Maintenance & Refit 529 02-06-2015 18:21
Questions About Putting a Boat Into Charter . . . Rich_Maler Dollars & Cents 27 07-03-2012 20:29
Thinking of Buying a Sailing Catamaran ? Some Thoughts . . . papagena Multihull Sailboats 12 23-12-2011 11:21
Trucking to California, Sailing to Hawaii and More . . . cool2848 Pacific & South China Sea 48 23-12-2011 03:49



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 06:13.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.