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Joshie225
 Post subject: Re: HEI conversion
PostPosted: Tue Jan 02, 2018 3:38 pm 
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Starts and then dies immediately? Where does the HEI module and coil get their battery voltage?

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Magnumforce1987
 Post subject: Re: HEI conversion
PostPosted: Tue Jan 02, 2018 4:34 pm 
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3 Deuce Weber
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Location: Hollister, Ca. 95023
Car Model: 1968 Plymouth Barracuda slant 6 super six 4 speed.
They are getting juice from a single pole single pole relay which is being fed from the large alternator terminal. Switched source to operate the coil.

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afastcuda1970
 Post subject: Re: HEI conversion
PostPosted: Tue Jan 02, 2018 4:49 pm 
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Magnumforce1987 wrote:
They are getting juice from a single pole single pole relay which is being fed from the large alternator terminal. Switched source to operate the coil.


Where is the switched 12v source from?

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Magnumforce1987
 Post subject: Re: HEI conversion
PostPosted: Tue Jan 02, 2018 5:12 pm 
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3 Deuce Weber
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Location: Hollister, Ca. 95023
Car Model: 1968 Plymouth Barracuda slant 6 super six 4 speed.
From the ignition switch, I jumpered off the terminals that used to go into the ballast resistor (which it's now bypassed). As soon as I turn the switch, the relay closes.

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afastcuda1970
 Post subject: Re: HEI conversion
PostPosted: Tue Jan 02, 2018 6:35 pm 
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Did you try swapping the two wires that go from the module to the distributor?

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Magnumforce1987
 Post subject: Re: HEI conversion
PostPosted: Tue Jan 02, 2018 6:45 pm 
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3 Deuce Weber
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Location: Hollister, Ca. 95023
Car Model: 1968 Plymouth Barracuda slant 6 super six 4 speed.
Yes sir, spark isn't any better.

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SlantSixDan
 Post subject: Re: HEI conversion
PostPosted: Tue Jan 02, 2018 11:37 pm 
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Are you 100% sure the coil's primary (small) wires are the right way round? Wrong way round = engine will run but not very well and poor-quality spark.

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Magnumforce1987
 Post subject: Re: HEI conversion
PostPosted: Wed Jan 03, 2018 10:19 am 
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3 Deuce Weber
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Location: Hollister, Ca. 95023
Car Model: 1968 Plymouth Barracuda slant 6 super six 4 speed.
SlantSixDan wrote:
Are you 100% sure the coil's primary (small) wires are the right way round? Wrong way round = engine will run but not very well and poor-quality spark.

Yeah, there's + and - symbols on the coils pigtail port that I hooked on to, 12v from relay to coil and - to module.

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Magnumforce1987
 Post subject: Re: HEI conversion
PostPosted: Thu Jan 04, 2018 8:53 pm 
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3 Deuce Weber
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Location: Hollister, Ca. 95023
Car Model: 1968 Plymouth Barracuda slant 6 super six 4 speed.
Fixed!!! All this time it was a bad coil, oredered a new coil, now I got slight orange/ strong blue and white spark. What a relief! Thank you all so much for hard work and dedication for your fellow slant6'ers and country!!!

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Dart270
 Post subject: Re: HEI conversion
PostPosted: Fri Jan 05, 2018 6:21 am 
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Congrats! Nice to have that settled.

Lou

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Rick Covalt
 Post subject: Re: HEI conversion
PostPosted: Sat Jan 06, 2018 4:28 am 
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Fixed!!! All this time it was a bad coil, oredered a new coil, now I got slight orange/ strong blue and white spark. What a relief!


Now you did go back and apologize to your lowly HEI module, right? :D :D We wouldn't want his feelings to be hurt! :D :D

Good to know the fix, congratulations!

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