GM HEI conversion - Off-Road Forums & Discussion Groups
Jeep-Short Wheelbase All discussion of short wheelbase Jeeps: CJ, TJ, YJ and JK

LinkBack Thread Tools Display Modes
post #1 of (permalink) Old 04-21-2003, 12:51 AM
Posts: n/a
GM HEI conversion

I just put in a GM HEI into my I6 cj7 it works great but i have one question the hot wire i used to go to the distrubuter has a voltage reducer on it. it is a little white box on the firewall right above the valve cover. Ther are 14 something volts going into it and 12 something going out. Can i bypass the reducer? and if i do will it create a hotter spark for my ignition?

Any help would be appreciated
Sponsored Links
post #2 of (permalink) Old 04-21-2003, 08:09 AM
uglyjeepoffroad's Avatar
Join Date: Oct 2000
Location: Hickory, NC
Posts: 2,339
Thanks: 0
Thanked 0 Times in 0 Posts
Re: GM HEI conversion

It isn't needed on the HEI. [img]images/graemlins/40BEER.gif[/img]
uglyjeepoffroad is offline  
post #3 of (permalink) Old 04-21-2003, 09:30 AM
Posts: n/a
Re: GM HEI conversion

I'll second that. You don't need it, and you're probably better off without it. [img]images/graemlins/grin.gif[/img]
Sponsored Links
post #4 of (permalink) Old 04-21-2003, 10:20 AM
Way Outta Control
Join Date: Sep 1999
Location: usa
Posts: 10,815
Thanks: 0
Thanked 1 Time in 1 Post
Re: GM HEI conversion

In order for the HEI to be High Energy, it needs a full unrestricted 12 volts to it. Those readings were taken key on, engine off. Running the voltage is even less through the ignition resistor.
Toss the resistor.
RRich is offline  
post #5 of (permalink) Old 04-21-2003, 11:20 AM
Way Outta Control
Join Date: Sep 1999
Location: The Palouse
Posts: 13,432
Thanks: 1
Thanked 3 Times in 3 Posts
Re: GM HEI conversion

1. The ballast resistor (that little sand colored boxy thingiee..) is there to limit the voltage to the OEM coil,
2. If it weren't there the coil would overheat and fail.
3. But since you've got the GM HEI installed,
4. It runs on full system voltage,
5. So hook 'er up direct to the full battery/alternator voltage,
6. And have fun....
7. You've gotten good advice in the previous post. [img]images/graemlins/40BEER.gif[/img] <--- Root-Beer
LEVE is offline  
Sponsored Links

Quick Reply

Register Now

In order to be able to post messages on the Off-Road Forums & Discussion Groups forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome