removing emissions
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Point style ignition systems require you to run a ballast resistor to prevent from burning up your points. This reduces the voltage flowing through your ignition system to approximatley 9 or 10 volts, compared to the 14+ volts you can run through a Duraspark system.
http://www.performancedistributors.c...stributors.htm
This is not correct. The factory duraspark II system does require a ballast resistor, and all factory duraspark II vehicles have one in the wiring harness.
Post Fiend
Joined: Jul 2004
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From: Northern California
Franklin is absolutely correct.
The Duraspark system requires a 1.05 to 1.15 Ohm ballast resistor in the run circut, powering the module and the coil. Reduces the voltage to around 8 volts DC. Only time the Duraspark module or the coil gets full voltage from the battery is when the truck is started. There is a ballast resistor bypass in the start circut going to the coil and module.
The Duraspark system requires a 1.05 to 1.15 Ohm ballast resistor in the run circut, powering the module and the coil. Reduces the voltage to around 8 volts DC. Only time the Duraspark module or the coil gets full voltage from the battery is when the truck is started. There is a ballast resistor bypass in the start circut going to the coil and module.
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From: Blue Eye, mo. hwy 86 & JJ
thats what mine is but i dont have oxigen sensors, so therefore i have no feedback carb?
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They could have taken them out and plugged the holes, or an older type exhaust manifold could have been installed. If you still have the sticker on the radiator, and you see EECIV on it somewhere, then it was a full computer controlled engine at one time. No vacuum advance on the dist is another clue.
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My apologies.
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You guys use the GM HEI module in the dist correct? That's a pretty good system and does not require a resistor.
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Yes, we use an HEI style module called the Dyna-Mod in our DUI Distributors. The Dyna-Mod has more dwell time set into it compared to the stock GM HEI module. The additional dwell time allows the coil to saturate longer, building up a more intense spark(kind of like switching from single to dual points in the older ignitions).
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