Slant *       6       Forum
Home Home Home
The Place to Go for Slant Six Info!
Click here to help support the Slant Six Forum!
It is currently Mon Dec 02, 2024 3:44 am

Unanswered topics | Active topics


» » Tech Q & A » Electrical

All times are UTC-08:00



Post new topic  Reply to topic  Page 2 of 2
  [ 26 posts ]  Go to page Previous 1 2
  Print view Previous topic | Next topic 
Author Message
Joshie225
 Post subject: Re: HEI conversion
PostPosted: Tue Jan 02, 2018 3:38 pm 
Offline
Supercharged
User avatar

Joined: Thu Jan 27, 2005 8:32 pm
Posts: 7834
Location: Portland-ish
Car Model: Fiat 500e
Starts and then dies immediately? Where does the HEI module and coil get their battery voltage?

_________________
Joshua
Top
   
Reply with quote  
Magnumforce1987
 Post subject: Re: HEI conversion
PostPosted: Tue Jan 02, 2018 4:34 pm 
Offline
3 Deuce Weber
User avatar

Joined: Sun Jul 05, 2015 10:51 pm
Posts: 73
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.

_________________
I'm human and I do things for the universe.
Top
   
Reply with quote  
afastcuda1970
 Post subject: Re: HEI conversion
PostPosted: Tue Jan 02, 2018 4:49 pm 
Offline
TBI Slant 6
User avatar

Joined: Mon Aug 03, 2015 2:39 pm
Posts: 221
Location: Dallas Texas
Car Model:
Quote:
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?

_________________
1976 Feather Duster /6 4sp
1984 W100 318 727 np241
1972 'Cuda 340 4sp
1985 D250 360 46RH
Top
   
Reply with quote  
Magnumforce1987
 Post subject: Re: HEI conversion
PostPosted: Tue Jan 02, 2018 5:12 pm 
Offline
3 Deuce Weber
User avatar

Joined: Sun Jul 05, 2015 10:51 pm
Posts: 73
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.

_________________
I'm human and I do things for the universe.
Top
   
Reply with quote  
afastcuda1970
 Post subject: Re: HEI conversion
PostPosted: Tue Jan 02, 2018 6:35 pm 
Offline
TBI Slant 6
User avatar

Joined: Mon Aug 03, 2015 2:39 pm
Posts: 221
Location: Dallas Texas
Car Model:
Did you try swapping the two wires that go from the module to the distributor?

_________________
1976 Feather Duster /6 4sp
1984 W100 318 727 np241
1972 'Cuda 340 4sp
1985 D250 360 46RH
Top
   
Reply with quote  
Magnumforce1987
 Post subject: Re: HEI conversion
PostPosted: Tue Jan 02, 2018 6:45 pm 
Offline
3 Deuce Weber
User avatar

Joined: Sun Jul 05, 2015 10:51 pm
Posts: 73
Location: Hollister, Ca. 95023
Car Model: 1968 Plymouth Barracuda slant 6 super six 4 speed.
Yes sir, spark isn't any better.

_________________
I'm human and I do things for the universe.
Top
   
Reply with quote  
SlantSixDan
 Post subject: Re: HEI conversion
PostPosted: Tue Jan 02, 2018 11:37 pm 
Offline
Board Sponsor & Contributor

Joined: Thu Oct 31, 2002 5:39 pm
Posts: 24449
Location: North America
Car Model:
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.

_________________
一期一会
Too many people who were born on third base actually believe they've hit a triple.

Image
Top
   
Reply with quote  
Magnumforce1987
 Post subject: Re: HEI conversion
PostPosted: Wed Jan 03, 2018 10:19 am 
Offline
3 Deuce Weber
User avatar

Joined: Sun Jul 05, 2015 10:51 pm
Posts: 73
Location: Hollister, Ca. 95023
Car Model: 1968 Plymouth Barracuda slant 6 super six 4 speed.
Quote:
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.

_________________
I'm human and I do things for the universe.
Top
   
Reply with quote  
Magnumforce1987
 Post subject: Re: HEI conversion
PostPosted: Thu Jan 04, 2018 8:53 pm 
Offline
3 Deuce Weber
User avatar

Joined: Sun Jul 05, 2015 10:51 pm
Posts: 73
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!!!

_________________
I'm human and I do things for the universe.
Top
   
Reply with quote  
Dart270
 Post subject: Re: HEI conversion
PostPosted: Fri Jan 05, 2018 6:21 am 
Offline
Board Sponsor & Moderator
User avatar

Joined: Mon Oct 21, 2002 11:08 am
Posts: 16793
Location: Blacksburg, VA
Car Model:
Congrats! Nice to have that settled.

Lou

_________________
Home of Slant6-powered fun machines since 1988
Top
   
Reply with quote  
Rick Covalt
 Post subject: Re: HEI conversion
PostPosted: Sat Jan 06, 2018 4:28 am 
Offline
Board Sponsor & SL6 Racer

Joined: Wed Oct 23, 2002 7:57 pm
Posts: 8675
Location: Waynesboro, Pa.
Car Model: 65 Valiant 2Dr Post
Quote:
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!

_________________
2 Mopars come with Spark plug tubes. One is a world class, racing machine. The other is a 426 CI. boat anchor!
Image
12.70 @ 104.6
Image
Top
   
Reply with quote  
Display posts from previous:  Sort by  
Post new topic  Reply to topic  Page 2 of 2
  [ 26 posts ]  Go to page Previous 1 2

» » Tech Q & A » Electrical

All times are UTC-08:00

Who is online

Users browsing this forum: No registered users and 7 guests

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB® Forum Software © phpBB Limited