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  1. #1
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    Solid Core VS Carbon Core Spark plug wires

    Which ones are better ? to be use on a merc 2.5, 200, carb ponny ?

    On my Pro Marine set ( looking at the center of the cable adn it's a carbon core ) I check the continuity of those cables (6ea.)with my multimeter and
    there was no BEEP at the tester.

    I'm thinking if a set of Solid Core would produce a better spark ??!!

    Thanks,
    Boat Doctor

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  3. Mercury - 3 Liter Moderator EuropeanAM's Avatar
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    #2

    Re: Solid Core VS Carbon Core Spark plug wires (boatdoctor)

    Type of plug wire utilized (or recommended) will vary, based on the ignition system type used.

    In some cases (such as CDM ignition), a semi-conductor plug wire will result in a STRONGER spark.

    Not recommended that wires be changed to a different design, as it may result in excessive strain on the ignition system, and/or altered firing (potentially resulting in pre-ignition or detonation).

    Engine serial number is the BEST identifier for the appropriate plug wires.




    Dual Mercury Master Technician- for Mercury Outboards, Racing & Mercruiser Sterndrives in Greenville, SC.
    Still consider myself a "Marine Apprentice" after 38 years (learn something new every day).
    Mercury Parts, Mercury Outboards, Smartcraft & Accessories, Injector Service, TDR Reeds- BBC Sponsor

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    #3

    Re: Solid Core VS Carbon Core Spark plug wires (EuropeanAM)

    It's a MERC 2.5 , 200 hp, 1993 , carb, 16 amps engine .

  5. Mercury - 3 Liter Moderator EuropeanAM's Avatar
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    #4

    Re: Solid Core VS Carbon Core Spark plug wires (boatdoctor)

    I do NOT recommend semi-conductor wires for ADI ignition engines.

    The correct plug wire kit is Part# 813715A9




    Dual Mercury Master Technician- for Mercury Outboards, Racing & Mercruiser Sterndrives in Greenville, SC.
    Still consider myself a "Marine Apprentice" after 38 years (learn something new every day).
    Mercury Parts, Mercury Outboards, Smartcraft & Accessories, Injector Service, TDR Reeds- BBC Sponsor

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    #5

    Re: Solid Core VS Carbon Core Spark plug wires (EuropeanAM)

    Opssss. !!!!.... What´s a "semi-conductor" wires ?

    Solid Core or Carbon Inner Core ???

    Boat Doc

  7. Mercury - 3 Liter Moderator EuropeanAM's Avatar
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    #6

    Re: Solid Core VS Carbon Core Spark plug wires (boatdoctor)

    "Carbon Inner Core" is a "Semiconductor".




    Dual Mercury Master Technician- for Mercury Outboards, Racing & Mercruiser Sterndrives in Greenville, SC.
    Still consider myself a "Marine Apprentice" after 38 years (learn something new every day).
    Mercury Parts, Mercury Outboards, Smartcraft & Accessories, Injector Service, TDR Reeds- BBC Sponsor

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    #7

    Re: Solid Core VS Carbon Core Spark plug wires (EuropeanAM)

    Why ADI ignition preffer the Solid Core wires ?? Due to RFI ??

    Today, most aftermarket ignition wires are made with a Ferrite inner core wire, not copper or stainless core like the OMC´s ones

  9. Mercury - 3 Liter Moderator EuropeanAM's Avatar
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    #8

    Re: Solid Core VS Carbon Core Spark plug wires (boatdoctor)

    Semi-conductor wires provide additional resistance (as their name implies).

    This can (to a certain point) result in a stronger spark at the spark plug.

    However.... the output of the coil must be taken into account also.

    ADI ignition is a Mercury design (specifically)- and although many use semiconductor wires (aftermarket)- it's best to retain the designed wires (and intended resistance values) unless there is a modification that REQUIRES some variance to enable a proper burn of fuel.

    Additional resistance in the plug wire can cause undue stress to the ignition system... much like using an incorrect, or improperly gapped spark plug.




    Dual Mercury Master Technician- for Mercury Outboards, Racing & Mercruiser Sterndrives in Greenville, SC.
    Still consider myself a "Marine Apprentice" after 38 years (learn something new every day).
    Mercury Parts, Mercury Outboards, Smartcraft & Accessories, Injector Service, TDR Reeds- BBC Sponsor

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    #9

    Re: Solid Core VS Carbon Core Spark plug wires (EuropeanAM)

    Thanks !!

    Boat Doc

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