View Poll Results: Spark Plug Preference

Voters
26. You may not vote on this poll
  • AC/Delco

    8 30.77%
  • Champion

    3 11.54%
  • NGK

    14 53.85%
  • Other (please post other)

    1 3.85%
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Results 1 to 15 of 15
  1. #1
    Petty Officer 1st Class Gromulin's Avatar
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    Default Poll: Best / Most Reliable Spark Plugs

    What say yous guys? Doing tune up on VP 5.7 GSi PEFS.
    2001 Doral 230BR "Grace-Marie"
    A cool video review of my exact year/model!
    VP 5.7 GSi, DP-SM drive with F5 props
    2008 Silverado 2500 "El Burro Blanco"

  2. #2
    Commander NHGuy's Avatar
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    Default Re: Poll: Best / Most Reliable Spark Plugs

    Ngk
    1989 Baja Sunsport 196, Mercruiser 5.7, Alpha 1
    Moultonborough Neck, Lake Winnipesaukee, NH

  3. #3
    Captain JoLin's Avatar
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    Default Re: Poll: Best / Most Reliable Spark Plugs

    They're car motors. Use whatever brand you like to use. If you're in doubt, use whatever brand(s) V-P recommends for your motor.

    My .02
    John and Linda
    Escapade II
    1997 Four Winns 278 Vista
    Twin V-P 4.3 Gi w/SX Drives

  4. #4
    Rear Admiral
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    Default Re: Poll: Best / Most Reliable Spark Plugs

    I use NGK in my Mercruiser but would have no issue with AC/Delco. NGK in my outboards.

  5. #5
    Petty Officer 2nd Class
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    Default Re: Poll: Best / Most Reliable Spark Plugs

    I haved NEVER had an issue with spark plugs when I have the AC Delco recomended plugs in my chevy motors.

  6. #6
    Captain
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    Default Re: Poll: Best / Most Reliable Spark Plugs

    ^Agreed. As long as you don't get fancy with the quintuple-electrode junk, a spark plug is a spark plug for most applications. The only time when certain spark plugs start becoming necessary is under high boost/high HP engines which can introduce spark blow-out from the rush of incoming air.

    If you want better performance, you can upgrade certain ignition components, but all of those components come before the spark plugs.

    I posted as other because I use Motorcraft spark plugs.
    1976 Mark Twain 200VBR w/Mercruiser 233 (Ford 351w) "Heart & Soul"

  7. #7
    Commander zbnutcase's Avatar
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    Default Re: Poll: Best / Most Reliable Spark Plugs

    Correct heat range, and, for marine use, corrosion resistance are the only things that matter, and for me, its NGK, with Delco in close second.
    You meet the nicest people at the American Legion.
    "maintenance is always cheaper than neglect"
    "certain parts are USCG approved for a REASON"
    "just because it's in the factory service manual, doesn't mean it's correct"

  8. #8
    Petty Officer 1st Class Gromulin's Avatar
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    Default Re: Poll: Best / Most Reliable Spark Plugs

    Manufacturer gives several choices. I've seen opinions from ACTUAL mechanics on threads that indicated some had more DOA than others.

    Since I couldn't find that thread, I decided to post a poll. Couldn't be simpler.
    2001 Doral 230BR "Grace-Marie"
    A cool video review of my exact year/model!
    VP 5.7 GSi, DP-SM drive with F5 props
    2008 Silverado 2500 "El Burro Blanco"

  9. #9
    Petty Officer 2nd Class iop's Avatar
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    Default Re: Poll: Best / Most Reliable Spark Plugs

    Quote Originally Posted by Gromulin View Post
    Manufacturer gives several choices. I've seen opinions from ACTUAL mechanics on threads that indicated some had more DOA than others.

    Since I couldn't find that thread, I decided to post a poll. Couldn't be simpler.
    Well there you have it... what you'll get here is a bunch of opinion
    The only folks who really have a clue are the manufacturers... they are the only ones who have an insight into true fail rate.

    its the same with Guitar tube amps ( which I play )... players and service techs will have favorites. But its the builders that use 1000s of tubes that truely know which brands fail at higher rate.
    1996 Chaparral 2335 SSt
    2004 Re-built jasper 5.7LX
    1996 BIII

  10. #10
    Petty Officer 1st Class Gromulin's Avatar
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    Default Re: Poll: Best / Most Reliable Spark Plugs

    Quote Originally Posted by iop View Post
    Well there you have it... what you'll get here is a bunch of opinion
    Well, that's why I posted a poll. Feel free to click a button. Or not.

    I can pick out plugs just like anyone else, just thought I'd spend an extra 30 seconds seeing if there was a trend in quality that might be reflected in the experiances of other boaters and boat mechanics that frequent this forum. If one manufaturer has more DOA than another, I'd like to know. A plug is a plug, otherwise.
    2001 Doral 230BR "Grace-Marie"
    A cool video review of my exact year/model!
    VP 5.7 GSi, DP-SM drive with F5 props
    2008 Silverado 2500 "El Burro Blanco"

  11. #11
    Honorary Moderator Emeritus Don S's Avatar
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    Default Re: Poll: Best / Most Reliable Spark Plugs

    I didn't vote because I don't think there is any "BEST" plug, or BEST of anything for that matter. I can tell you that in my opinion Champion is about the worst choice you could make for a boat spark plug due to experience.
    I have had the insulators blown out, I have replaced many after a customer installed them and they wouldn't all fire and the engine missed, they are longer, and with some manifolds are almost impossible to install or remove without breaking the insulator. All in all, not something I would use or recommend to anyone. I use either AC or NGK and have not had problems with either one.

    I also cleaned up this thread, lets keep it on subject.
    Don S.


    Please, no PM's (Private Messages) regarding boat/engine problems.
    That is what the forums are for.
    Only forum/moderator issues will be answered in PM's.

  12. #12
    Petty Officer 1st Class Gromulin's Avatar
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    Default Re: Poll: Best / Most Reliable Spark Plugs

    Thanks, Don. THAT was the kind of comment I was hoping for.

    NGK it is.
    2001 Doral 230BR "Grace-Marie"
    A cool video review of my exact year/model!
    VP 5.7 GSi, DP-SM drive with F5 props
    2008 Silverado 2500 "El Burro Blanco"

  13. #13
    Petty Officer 2nd Class iop's Avatar
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    Default Re: Poll: Best / Most Reliable Spark Plugs

    Quote Originally Posted by Gromulin View Post
    Well, that's why I posted a poll. Feel free to click a button. Or not.

    I can pick out plugs just like anyone else, just thought I'd spend an extra 30 seconds seeing if there was a trend in quality that might be reflected in the experiances of other boaters and boat mechanics that frequent this forum. If one manufaturer has more DOA than another, I'd like to know. A plug is a plug, otherwise.
    I guess, IMHO... it would probably better to ask what was the worst plug... that would have gotten a lot more action.
    1996 Chaparral 2335 SSt
    2004 Re-built jasper 5.7LX
    1996 BIII

  14. #14
    Commander zbnutcase's Avatar
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    Default Re: Poll: Best / Most Reliable Spark Plugs

    I totally agree with Don on the Champions...and they are too light to even make a good paperweight!
    You meet the nicest people at the American Legion.
    "maintenance is always cheaper than neglect"
    "certain parts are USCG approved for a REASON"
    "just because it's in the factory service manual, doesn't mean it's correct"

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