Bilge room blower

Discussion in 'General Maintenance/Repair Questions' started by Ovmman, Aug 20, 2019.

  1. Ovmman

    Ovmman Member

    42
    Sep 16, 2016
    Great South Bay, Long Island
    2005 280 Sundancer with twin 4.3 engines, alpha 1 gen 2
    Twin 4.3 alpha 1 gen 2
    hi guys, just wondering,this might be a dumb question but was wondering if anyone has ever hooked up there blowers to a timer or maybe a thermostat . Thanks Tony
     
  2. Stee6043

    Stee6043 Well-Known Member

    Jun 1, 2015
    West Michigan
    1997 Sundancer 400
    7.4L Gassers
    Something like this would likely not be allowed by USCG guidelines. A timer or temperature dependent circuit could interfere with the proper operation of a bilge blower.
     
  3. dtfeld

    dtfeld Water Contrails

    Jun 5, 2016
    Milton, GA
    410 Sundancer
    2001
    Axiom 12 MFD
    Cat 3126 V-Drives
    I would think you could have a parallel circuit that turned them on/off at a certain temperature or time, but the manual circuit would still have to work.

    Just curious. For what purpose?
     
  4. Ovmman

    Ovmman Member

    42
    Sep 16, 2016
    Great South Bay, Long Island
    2005 280 Sundancer with twin 4.3 engines, alpha 1 gen 2
    Twin 4.3 alpha 1 gen 2
    Just wondering if it would help with the heat sink, maybe help extend the life of the battery,or anything else in the bilge
     
  5. SCORPIO

    SCORPIO Well-Known Member SILVER Sponsor

    Apr 7, 2008
    Delaware
    1989 300 DA
    Twin 5.7 Merc Alpha I
    I run my blowers from before start up until after shut down, wont hurt anything and if the blowers wear out a little faster, they are cheap and easy to replace.
     
    Rusted Nut and JVM225 like this.
  6. Korkie

    Korkie Active Member GOLD Sponsor

    599
    Feb 2, 2016
    Leonardtown, MD Potomac River / Chesapeake Bay
    340 Sundancer 2006, Garmin 7612, xHD Radome
    Merc 496 Mags
    Bravo III Drives
    +1 on SCORPIO - also added inline fuses so that if one was to overheat/crap out and blow fuse, it wouldn't take out power to both.
     
  7. hottoddie

    hottoddie Well-Known Member

    Jan 11, 2012
    Boston/Cape Cod
    1986 Sea Ray 390 EC
    Garmin 4212 Chartplotter
    Garmin 24 HD Radar
    Garmin 546s Plotter
    454 Crusaders
    I agree with this. Leave them running whenever the engines are running. The engine room will be a little cooler and the engines will run a little more efficiently with the cooler intake air.
     
    Rusted Nut likes this.
  8. Ovmman

    Ovmman Member

    42
    Sep 16, 2016
    Great South Bay, Long Island
    2005 280 Sundancer with twin 4.3 engines, alpha 1 gen 2
    Twin 4.3 alpha 1 gen 2
    Hey guys, reason I originally posted this because I backed the boat into the slip, was in a rush had to leave quickly though it would be good if there was some way I could leave the blowers running a little while to alleviate any heat sink
     
    dtfeld likes this.
  9. dtfeld

    dtfeld Water Contrails

    Jun 5, 2016
    Milton, GA
    410 Sundancer
    2001
    Axiom 12 MFD
    Cat 3126 V-Drives
  10. JVM225

    JVM225 Well-Known Member GOLD Sponsor

    Apr 8, 2008
    Farmingdale, NY
    2002 410 Sundancer, Monaco Edition.
    3126 Cats.
    Me too!
     
  11. NorCal Boater

    NorCal Boater Well-Known Member SILVER Sponsor

    Jan 24, 2008
    Covington, LA
    Cobalt CM23
    GM SB 383" Stroker" Alpha Gen I
    I run mine prior to start up and any time I'm cruising at no wake speed. But they are so freaking noisy! Does anyone have ones they like that are really quiet without spending $250 a piece (I have 2)?
     
  12. Stee6043

    Stee6043 Well-Known Member

    Jun 1, 2015
    West Michigan
    1997 Sundancer 400
    7.4L Gassers
    $250 a piece? Holy smokes....the Atwood "quiet" blowers are $32 a piece on Amazon, delivered. Worth a shot for barely more money than a case of beer!
     
  13. JimT

    JimT Well-Known Member SILVER Sponsor

    Jul 7, 2009
    Charlotte, NC- LKN
    2010 330 Sundancer
    T-350mags w/BIIIs & Axius, 5.0 kw Kohler
    The Atwood inline blowers are not rated for continuous use. And they are ridiculously loud. I replaced mine with the squirrel cage type blowers from Jabsco. They are so quiet I can't even tell when they are running.
     
  14. ttmott

    ttmott PhD in OCD GOLD Sponsor

    Apr 3, 2012
    Space Coast Florida
    2006 52 Sedan Bridge
    Cummins QSM11
    There are no SR factory installed blowers that are continuous duty rated (sans L-class boats) so first would be to upgrade the blowers to the Jabsco squirrel cage continuous duty blowers. Then simply install an adjustable time delay relay (Hella P/N 996152131 for example) with the helm blower on/off switch. It is important to install the relay at the switch and not the blower relay or Fire Boy circuitry. In this manner should you have a fire in the engine room the Fire Boy can still terminate the blowers. There should be no regulatory issues if installed in this manner.
     
    cstinehour likes this.
  15. cstinehour

    cstinehour Member

    44
    Dec 16, 2017
    2008 350 Sundancer, Raymarine C120
    T-VD 8.1 S Horizon DTS MPI MIE (T-370 hp - 276 kW)
    Is the Jabsco blower a simple swap with the existing Sea Ray unit?
     

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