darren lewis
Part of things
heaven wont have me and hell knows i'll take over
Posts: 499
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Aug 27, 2012 11:14:39 GMT
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I'm fitting an accuspark thing to my distributor, how do I tell if the ignition is ballast or none ballast, 75 viva hc 1256cc
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Aug 27, 2012 12:59:14 GMT
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I thought that all Hc viva's were ballast, but easiest way is to check the voltage at the coil, if it's around 9v when the engine is running, then you know  |
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darren lewis
Part of things
heaven wont have me and hell knows i'll take over
Posts: 499
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Aug 27, 2012 13:09:40 GMT
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Yeah I thought so but keep hearing conflicting things, thanks ian
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Aug 27, 2012 13:38:20 GMT
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It will be 12v while cranking though, so get it running before testing the voltage.
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Volvo back as my main squeeze, more boost and some interior goodies on the way.
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Aug 27, 2012 18:12:06 GMT
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they should be ballast. but when i measured the voltage at the coil on mine it read normal 12volts.
i ended up taking a feed from a different source at the juntion box in the engine bay when i fitted my electronic kit, just to be sure.
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Aug 27, 2012 19:32:00 GMT
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I thought that the viva had a separate wire from the ignition switch that was the correct resistance to give 9v, then a wire from the switch starter position feeding the 12v, of course that may no longer be the case, a previous owner may have changed that, If you fit electronic ignition, then you need to use a 12v coil, and feed, the ballasted coil won't like working with 12+v, and the electronics won't like working at lower than 9v That's why they often sell electronic ignition systems with a new coil |
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Aug 28, 2012 20:48:40 GMT
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I thought that the viva had a separate wire from the ignition switch that was the correct resistance to give 9v, then a wire from the switch starter position feeding the 12v, of course that may no longer be the case, a previous owner may have changed that, If you fit electronic ignition, then you need to use a 12v coil, and feed, the ballasted coil won't like working with 12+v, and the electronics won't like working at lower than 9v That's why they often sell electronic ignition systems with a new coil yep. the resistance is (supposedly) built into the wire that runs from the ignition switch to the bulkhead connector. but when i measured the voltage at the coil on mine it read 12volts. i still ran a separate wire just to be sure, but i have heard people just fitting the electronic conversion and not changing anything else and having no problems. so. i haven't answered the question there have i? ;D |
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Aug 29, 2012 12:00:32 GMT
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Mk2 Escorts were the same, the ballast resistor was built into the wire that fed from the ignition to give 9v while running, while cranking it would disconnect (as would everything else fed from the ignition switch) and the coil would get 12v from a separate wire from the starter motor solenoid as it was powered up to activate the starter motor.
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Volvo back as my main squeeze, more boost and some interior goodies on the way.
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