ignition swap
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Joined: May 2014
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From: edmond okla
ignition swap
my van had a pertronix flamethrower ignition and super coil. it was damaged so im converting back to points and condenser. can i use my super coil ? I was told to install a ballist resistor. can someone explain what the ballist resistor is and if i realyl need it in my 66 falcon super van? my motor is a 240 l6 btw.
i ain't rite
Joined: Mar 2005
Posts: 65,573
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From: Marlboro Mental Hospital.
the ballast resister cuts coil voltage down to between 6 and 8 volts for prolonged points life. if you put straight 12 volts to the points they will work, but need to be changed more often.
Post Fiend
Joined: Apr 2002
Posts: 19,311
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From: Waterloo, Iowa
Check the voltage at the coil now - with engine running - and you may find you are already running a ballast resistor. The way it worked back then when the key is turned to start, full battery juice goes to the coil for a fatter spark to aid in cold weather. When the key is in run position the voltage is dropped to ~7 volts continuous. Aftermarket high output coils need the full 12+ volts to take advantage of wider plug gaps and work their best.
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