Spark plug-extender combination for 1984 QV | FerrariChat
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Spark plug-extender combination for 1984 QV

Discussion in '308/328' started by RichardAguinsky, Jun 4, 2008.

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  1. RichardAguinsky

    RichardAguinsky Formula Junior

    Nov 12, 2007
    478
    Palo Alto, Californi
    Full Name:
    Richard Aguinsky
    #1 RichardAguinsky, Jun 4, 2008
    My 1984 Mondial QV has black extenders with NGK BPGES plugs.

    My intention is to go Iridium. I found in the forum that the recommended plug is BPR7EIX or BPR6EIX. But these are resistive plugs that go with the red extenders. I have the black extenders in my car.

    Did a PO change the original red non-resistive extenders with the black resistive ones and changed the plugs to non resistive?

    Will I be ok with BPR7EIX plugs with the black extenders? I can't find Iridium non resistive, BP7EIX does not exist.
     
  2. Steve Magnusson

    Steve Magnusson Two Time F1 World Champ
    Lifetime Rossa

    Jan 11, 2001
    26,876
    30°30'40" N 97°35'41" W (Texas)
    Full Name:
    Steve Magnusson
    #2 Steve Magnusson, Jun 4, 2008
    Don't rely on just the plastic's color to make a conclusion about the resistance of your extenders -- use an ohmmeter and make a measurement (for example, TR extenders are also black and have 0 Ohm resistance).

    Adding a little more resistance with a resistor-style plug won't cause you any trouble. It's using a non-resistor (0 Ohm) extender with a non-resistor plug that would be trouble -- this can stress, and blow-up, the transistor in the Digiplex firing the coil primary.
     

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