Duraspark coil output

Discussion in 'Technical' started by jasonwthompson, Apr 2, 2014.

  1. jasonwthompson

    jasonwthompson Member

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    I have a stock 75 maverick with a 302 and factory Duraspark ignition system. Does anyone know what the factory coil voltage output potential is? I am having ignition problems and have already replaced the box with a new green harness unit. If I have to replace the coil I was thinking about something that would work without having to add a ballast resistor, but still had more umph than the factory unit.
     
    jasonwthompson, Apr 2, 2014
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  2. Blue Brick

    Blue Brick Member

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    Up to 42,000 Volts.
     
    Last edited: Apr 2, 2014
    Blue Brick, Apr 2, 2014
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  3. rthomas771

    rthomas771 Member

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    I was running a TFI coil and bracket that came off a '93 Crown Vic with my Duraspark II. The TFI coil gets a full 12 volts whereas the typical DSII coil get about 6-8 volts. Some people claim it's 1-1/2 times hotter than the conventional coil.
     
    rthomas771, Apr 2, 2014
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  4. doncomfort

    doncomfort MCCI Membership Director

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    Glad I saw this. I have a full 12 volts running to my coil. So hooking up a DS coil to that would cause damage to coil?
     
    doncomfort, Apr 3, 2014
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  5. Krazy Comet

    Krazy Comet Tom

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    The resistor should be in the wiring harness, feeds the R/G wire that powers coil so there won't be any voltage drop until engine is running... The coil only draws current when being driven by the module and it(module) must receive a pulse from the distributor...

    Any damage would more likely be to ign module than coil...
     
    Krazy Comet, Apr 3, 2014
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  6. groberts101

    groberts101 Member

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    I NEVER run the box because it just interferes with the whole package when using a hi-po coil. None of the other guys I see running DS disty's use them either.

    IIRC.. the last one I used ran around 9 volts to the disty(or you'll fry the pickup) and full 12 V to the coil. It's been a while though and I could easily be wrong about the votages.

    PS. regardless of the numbers thrown around for the factory coils.. I've ALWAYS seen better spark energy from even a cheap aftermarket hi-po coil. And I know for fact that the stock stuff won't keep making good power at higher rpm like the hotter aftermarket stuff will.
     
    Last edited: Apr 3, 2014
    groberts101, Apr 3, 2014
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  7. jasonwthompson

    jasonwthompson Member

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    Thanks guys. I was thinking the same thing about the factory one being inferior to even a cheap after market one.
     
    jasonwthompson, Apr 3, 2014
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