Source for stainless steel engine vents

Discussion in 'Announcements & FAQs' started by Richard Prokop, Dec 31, 2011.

  1. Nehalennia

    Nehalennia Well-Known Member

    Aug 22, 2007
    Marysville, WA
    2001 310DA twin 350 MAGs, Westerbeke 4.5KW
    Twin 350 MAG V-drives
    David
    No, I haven't the compound shaping is simply cost prohibitive.
     
  2. munko

    munko Member

    57
    Oct 16, 2012
    Lake Erie
    330 Sundancer 1994
    454 Mercruiser
    Time to revive old thread :D.
    I would like to replace my louvered vent with S.S.
    Are these still being offered?
    My vents are the same as Pyro's, 14" x 5 5/8".
     

    Attached Files:

  3. Third Edition

    Third Edition Well-Known Member PLATINUM Sponsor

    817
    Apr 9, 2017
    NE Florida
    360 Sundancer 2002
    T-8.1L V-drives
  4. 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
    Check around on ebay. I've seen SS vents on there at times.
     
  5. Delta Ron

    Delta Ron Member

    36
    Jun 4, 2019
    California Delta
    1990 350 express cruiser
    Twin 454 mercruiser, hurth transmissions
    Ive wanted to find a source for these. Just joined this site yesterday. Im sure ill be ordering some soon. Our Express Cruiser 350 has 2 vents on both sides. Im a new boat owner & I keep the blowers on all the time. Is this necessary? Can i avoid running blowers all the time if I add more vents?
     

    Attached Files:

  6. Lazy Daze

    Lazy Daze Well-Known Member TECHNICAL Contributor GOLD Sponsor

    Apr 21, 2009
    PA
    Various
    Various
    Blowers can be turned off once you're at planing speeds as there will be sufficient natural ventilation.
     
  7. Delta Ron

    Delta Ron Member

    36
    Jun 4, 2019
    California Delta
    1990 350 express cruiser
    Twin 454 mercruiser, hurth transmissions
    Thanks Lazy Dave, about the fastest i go is 10knots at 2500 rpm. Im taking it easy on these engines, they are 30 years old, with a little more than 1000 hrs each. I had both of the 16" props tuned when we had it hauled out. They weren't bad and didn't notice any improvement after the tune up. Sucks. I may try larger props. Anyway, at 10 knots, im not sure if i will have enough ventilation to shut off the blowers?
     

    Attached Files:

  8. TNT8808

    TNT8808 Well-Known Member PLATINUM Sponsor

    769
    May 25, 2016
    West Michigan
    2008 48 Sundancer
    Cummins QSC 8.3's
    Avon Seasport 340
    40 HP Yamaha
    Google "searayman13" as it looks like he has some also.

    -Tom
     
  9. Delta Ron

    Delta Ron Member

    36
    Jun 4, 2019
    California Delta
    1990 350 express cruiser
    Twin 454 mercruiser, hurth transmissions
    Thanks Tom
     
  10. Delta Ron

    Delta Ron Member

    36
    Jun 4, 2019
    California Delta
    1990 350 express cruiser
    Twin 454 mercruiser, hurth transmissions
    Thanks Tom, i found his ebay store
     
  11. Lazy Daze

    Lazy Daze Well-Known Member TECHNICAL Contributor GOLD Sponsor

    Apr 21, 2009
    PA
    Various
    Various
    I don't know how many vents it would take to eliminate the blower when running at low speeds. Without data/calculations, personally I wouldn't risk it. Short of data, it would all just be a 'feel good' guess - which is a bad idea in this situation.

    On another note... use those engines! If they've been properly taken cared of, 1,000 hours is certainly not near the end of life.

    Another note... maybe you want to upgrade your blowers to something quieter like a squirrel cage. Also, check out HOW your blowers are mounted - often you can adjust that to quiet them down so you don't get as much echoing/vibration.
     
  12. Delta Ron

    Delta Ron Member

    36
    Jun 4, 2019
    California Delta
    1990 350 express cruiser
    Twin 454 mercruiser, hurth transmissions
    Thanks again Dave. People do keep telling me to run those engines up more. The flowers I have are the inline plastic housing type, same as in ski boats n such. They aren't too noisy. They are mounted on the outsides of the center stringers, near the prop shafts. Even though I've replaced both alternator, I don't like the electrical drain there. Would prefer as much of that current be dedicated to the batteries as possible. The squirrel cage type would create great flow I'm sure, but sounds bulky.
     
  13. susanandlance

    susanandlance Well-Known Member

    Feb 10, 2011
    Florida
    2007 Sea Ray 36 Sedan Bridge
    8.1 mercruisers
    I run blowers whenever engines are running, idle or cruise, too cheap to replace when they go out and helps with circulation at any speed
     
    Delta Ron and Pyrojodge like this.
  14. 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 philosophy. I run mine 100% of the time my main engines are running. Anything that supplies fresh cooler air to the bilge is a benefit and may even help the main engines run slightly more efficient. I don't worry about the battery drain they use as the alternators on the main engines have plenty of output to compensate.
     
  15. Delta Ron

    Delta Ron Member

    36
    Jun 4, 2019
    California Delta
    1990 350 express cruiser
    Twin 454 mercruiser, hurth transmissions
    Thanks susanandlance, thats what ive been doing. 30 year old boat, i may treat it to new blowers soon, no telling how okd they are??
     
    susanandlance likes this.
  16. Delta Ron

    Delta Ron Member

    36
    Jun 4, 2019
    California Delta
    1990 350 express cruiser
    Twin 454 mercruiser, hurth transmissions
    Hey hottoddie, thanks. Good to know im doing the right thing. 30 y/o vessel, not sure how old the blowers are. Might replace them sometime soon
     
    susanandlance likes this.
  17. 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
    When they start to go bad the bearings will begin to squeal especially when you first turn them on. I would leave them alone until then.
     
    Delta Ron likes this.
  18. Delta Ron

    Delta Ron Member

    36
    Jun 4, 2019
    California Delta
    1990 350 express cruiser
    Twin 454 mercruiser, hurth transmissions
    I suspected as such, i appreciate your input!!
    Different topic, im going to make a hardtop for our boat, it will cost about $1000 or less and have some design appeal to it. Been searching for dyi jobs people have already done, really hard to find so i will post my own soon. And several other issues i want to tacklesee you around hottoddie.
     

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