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    Spark Arrestor-Clean or Replace-gctid377739

    Hi everyone!!

    My question is just as the title states. Best I can tell the engines have the original arrestors on there. Cleaning these up is part of my maintenance list for prepping the boat. I generally clean them with just carb/choke cleaner, spray generously and let dry. Is it ever worth replacing these parts? Would replacing them let the engine breathe a tad bit easier?

    Thanks!!
    sigpic
    MDR3055
    "GREEN JEANS"
    '99 Bayliner 3055
    Merc 5.0's Bravo 2's
    Marina Del Rey, CA

    #2
    I typically clean these with a degreaser, and then rinse them with hot water, and then gently blast them with compressed air.

    They will dry out on their own also.

    There are some flame arrestors that I think are too restrictive. In that case, about the only thing that we can do, is to replace them with a flame arrestor that has more area to it.

    Either taller, or larger in diameter, or both.

    The Dog Gone things are rediculously expensive for what they are. :thumb

    What I wish that I could come with, would be a ducting system that would allow for bringing the incoming air in from more closely to the inlet air louvers.

    This would bring some cooler air into the engines!

    .
    Rick E. Gresham, Oregon
    2850 Bounty Sedan Flybridge model
    Twin 280 HP 5.7's w/ Closed Cooling
    Volvo Penta DuoProp Drives
    Kohler 4 CZ Gen Set

    Comment


      #3
      Assuming your spark arrestor is original equipment, i.e is about the diameter of a 45 record and looks from the side like a stack of thin metal layers with little separators between them, then unless they have been damaged by bending or denting, only cleaning is neccessary. I usually just use a degreaser and water to clean mine followed by quick blow with a compressor to dry and good to go!

      Comment


        #4
        2850Bounty wrote:
        I typically clean these with a degreaser, and then rinse them with hot water, and then gently blast them with compressed air.

        They will dry out on their own also.
        This is what I do although I use my parts washer and a brush, then compressed air to dry.
        Mocoondo
        2002 Bayliner 195 Capri
        Mercruiser 5.0L V8 / Alpha I Gen II
        MMSI: 338091755

        Comment


          #5
          And when the wife is away, we sneak these into the................... (Hint Hint.... it's a kitchen appliance that has a water tight door and cycle control!)

          But you did not hear this on the BOC!

          .
          Rick E. Gresham, Oregon
          2850 Bounty Sedan Flybridge model
          Twin 280 HP 5.7's w/ Closed Cooling
          Volvo Penta DuoProp Drives
          Kohler 4 CZ Gen Set

          Comment


            #6
            Thanks everyone!

            Rick- Yes, ridiculously expensive!! I also like your thoughts on grabbing air from near the louvers. Hell, why not use a NACA duct and scat tube and get a little ram air too??

            What are your thoughts on the OEM arrestor being restrictive? Is it worth picking up aftermarket ones?
            sigpic
            MDR3055
            "GREEN JEANS"
            '99 Bayliner 3055
            Merc 5.0's Bravo 2's
            Marina Del Rey, CA

            Comment


              #7
              Cascade is a natural de-greaser. Don't ask, don't tell.
              Tally and Vicki
              "Wickus" Meridian 341
              MMSI 338014939

              Comment


                #8
                talman wrote:
                Cascade is a natural de-greaser. Don't ask, don't tell.
                And it doesn't leave streaks.... right?
                Rick E. Gresham, Oregon
                2850 Bounty Sedan Flybridge model
                Twin 280 HP 5.7's w/ Closed Cooling
                Volvo Penta DuoProp Drives
                Kohler 4 CZ Gen Set

                Comment


                  #9
                  I used to use the dishwasher when I was trailering, since it was convenient. I'd tell the admiral, and also throw in whatever other dirty parts needed cleaning.

                  Now I just use the Castrol purple and a garden hose there at the marina.

                  Comment


                    #10
                    talman wrote:
                    Cascade is a natural de-greaser. Don't ask, don't tell.
                    [SIZE]3 wrote:
                    [COLOR]#ff0000 wrote:
                    Boy, you got that one right.......................[/COLOR][/SIZE]

                    Comment


                      #11
                      2850Bounty wrote:
                      And when the wife is away, we sneak these into the................... (Hint Hint.... it's a kitchen appliance that has a water tight door and cycle control!)

                      But you did not hear this on the BOC!

                      .
                      We just had to replace ours. Vicky would kick my a$$ if I put anything like that into it.
                      Phil, Vicky, Ashleigh & Sydney
                      1998 3055 Ciera
                      (yes, a 1998)
                      Previous boat: 1993 3055
                      Dream boat: 70' Azimut or Astondoa 72
                      Sea Doo XP
                      Sea Doo GTI SE
                      Life is short. Boats are cool.
                      The family that plays together stays together.
                      Vice Commodore: Bellevue Yacht Club

                      Comment


                        #12
                        itsabowtime2 wrote:
                        Vicky would kick my a$$ if I put anything like that into it.
                        Phil.............


                        Rick E. Gresham, Oregon
                        2850 Bounty Sedan Flybridge model
                        Twin 280 HP 5.7's w/ Closed Cooling
                        Volvo Penta DuoProp Drives
                        Kohler 4 CZ Gen Set

                        Comment


                          #13
                          I use a marine filter from K&N. Supposedly, they have much better airflow than stock therefore increasing power by up to 15%. I can't confirm or deny this, but the fact is that they are cheaper than stock, last forever, and I've had absolutely nothing bad to say about mine.

                          http://www.knfilters.com/marine/flamearrester.htm

                          Comment


                            #14
                            Easy Off works great too, and I prefer the lemon scent.

                            Works great on the stuff that won't fit in the kitchen appliance that shall remain nameless.

                            Not that I have ever tried to fit a cylinder head into one, just saying.
                            " WET EVER "
                            1989 2459 TROPHY OFFSHORE 5.8L COBRA / SX
                            mmsi 338108404
                            mmsi 338124956
                            "I started with nothing and still have most of it left"

                            Comment


                              #15
                              dktool wrote:
                              Easy Off works great too, and I prefer the lemon scent.
                              You would!

                              Come on.... you had that com'n from your poke at me the other day! :kidding
                              Rick E. Gresham, Oregon
                              2850 Bounty Sedan Flybridge model
                              Twin 280 HP 5.7's w/ Closed Cooling
                              Volvo Penta DuoProp Drives
                              Kohler 4 CZ Gen Set

                              Comment

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