Flame arrestor
+ Reply to Thread
Results 1 to 10 of 10

Thread:
Flame arrestor

  1. #1
    Retired Air Force Master Sergeant's Avatar
    Join Date
    Jan 2008
    Location
    Lake Havasu
    Posts
    940

    Default Flame arrestor

    Do you modify your flame arrestor to flow better by taking it apart and remove screens?

  2. Remove Advertisements
    PerformanceBoats.com
    Advertisements
     

  3. #2
    Some guy obnoxious001's Avatar
    Join Date
    Dec 2007
    Posts
    3,570

    Default

    Quote Originally Posted by Master Sergeant View Post
    Do you modify your flame arrestor to flow better by taking it apart and remove screens?
    If it's like some of the ones I have seen, drill the rivets that hold it together,, remove some of the turns of screen, reassemble using bolts.

  4. #3
    Senior Member
    Join Date
    Jun 2010
    Posts
    2,924

    Default

    why even use one if you are going to ruin it?

  5. Remove Advertisements
    PerformanceBoats.com
    Advertisements
     

  6. #4
    Senior Member
    Join Date
    Jan 2009
    Posts
    435

    Default

    k/n makes some marine air filters that have high flow. In a open motor engine i dont run any filter, not much dust on the water.

  7. #5
    AKA Blownjet 468 Blowncat 509's Avatar
    Join Date
    Mar 2009
    Location
    Somewhere between Paso & L.A.
    Posts
    1,205

    Default

    The K&N's don't flow as well as a modded spark arr. do like Barry said, pull out a few
    of the wraps of the tighter screen and go! I never ran an air cleaner inside my scoop
    either, but I heard LEO's would get you if you didn't have them....


    Out With The Old, In With The New.......Goodbye Blinding Acceleration, Hello Sustained High Speed (in comfort)

  8. #6
    These colors don't run BLWN BUX's Avatar
    Join Date
    Sep 2008
    Location
    Riverside, CA
    Posts
    51

    Default

    I did a carb upgrade to a 1150 Dominator last season.

    I had to purchace a new filter / arestor and it would only make sense to use of at least as much cfm as the carb, Right?

    I contacted 3-4 of the flame arrestor companies; and can you believe that there tech departments could not tell me how many CFM there products were rated for. Believe it or not, I got the "bigger is better" , and "this one has an opening for a Dominator so it should flow enough".

    K & N is the only company that I found sizing chart / cfm data. I call their tech dept. and was told that ALL of their filters are constructed the same way, but only a select qty had they paid to have the coast gard approvals. This should lead to reason that any of the K & N filters should perform as a flame arrestor.

    BTW, when I actually did the carb swap, I noticed a disturbing amount of dirt inside my "take off" carb . I would have to argue that there is dirt in the air (this was runing with a screen arrestor)

    I run a K & N now.

  9. #7
    Senior Member bp298's Avatar
    Join Date
    Dec 2007
    Location
    LHC
    Posts
    6,570

    Default

    i have 5 3/4" x 3" barbon spark arrestors, with 1 layer of screen. many many years ago, i found some k&n's that slip fit right over the arrestors. been running this way for 15 years. i've had them on on the dyno, and without, and saw no real measurable difference in hp.
    but if there's "nothing in the air" for a boat, someone needs to explain me why these things get absolutely filthy in less than a year, bugs and everything else they trap. ask the njba guys at ming, when there's flyin pincher bugs everywhere, including in their carbs, airbleeds, etc.
    no thanks. when i pull the barbon's off, the inside of the carbs are clean like new. i like 'em that way. and i also like keeping all that junk out of my engine. just personal choice...

  10. #8
    Essex Junkie Deja_Vu's Avatar
    Join Date
    Jun 2010
    Location
    Temecula, CA
    Posts
    149

    Default

    Bump...

    I am thinking about getting a K&N flame arrestor to replace my OEM unit. Any body else using these? I have a 7.4L Mercruiser. I just need to measure the height of mine to double check the clearance to the hatch. I like the idea of actually filtering out dirty air. Found a great price on Amazon.



    Amazon.com: K&N 59-3364 K&N Flame Arrestor: Automotive

  11. #9
    Senior Member
    Join Date
    Aug 2010
    Posts
    836

    Default

    Quote Originally Posted by Deja_Vu View Post
    Bump...

    I am thinking about getting a K&N flame arrestor to replace my OEM unit. Any body else using these? I have a 7.4L Mercruiser. I just need to measure the height of mine to double check the clearance to the hatch. I like the idea of actually filtering out dirty air. Found a great price on Amazon.



    Amazon.com: K&N 59-3364 K&N Flame Arrestor: Automotive
    i have one inside of my scoop... i dunno my butt dyno says its the same with or without it. same sound wise, etc.

  12. #10
    Essex Junkie Deja_Vu's Avatar
    Join Date
    Jun 2010
    Location
    Temecula, CA
    Posts
    149

    Default

    Quote Originally Posted by ka0tyk View Post
    i have one inside of my scoop... i dunno my butt dyno says its the same with or without it. same sound wise, etc.
    Yeah I wasn't expecting to gain any more HP, but definitely want cleaner air to my engine.

    How often do you clean/oil it? Every season?

+ Reply to Thread

Quick Reply Quick Reply

Register Now

Please enter the name by which you would like to log-in and be known on this site.

Please enter a password for your user account. Note that passwords are case-sensitive.

Please enter a valid email address for yourself.

Please select your insurance company (Optional)

Log-in

Tags for this Thread

Digg This Thread

Posting Permissions

  • You may post new threads
  • You may post replies
  • You may not post attachments
  • You may not edit your posts
  •  
 

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95