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View Full Version : Converted to Electronic Ignition, Do I Still need Ballast Resistor?


tockit
07-10-2012, 10:49 AM
I just converted the points on my '89 351W to a Pertronix Ignitor II electronic ignition, do I still need the ballast resistor?
I was told that I don't but wanted to verify it.

Thanks!

thatsmrmastercraft
07-10-2012, 11:02 AM
I just put the Ignitor II in my '77 and you do not need a ballast resistor with this system. I also added the PerTronix 45011 Flame-Thrower II 45,000 Volt 0.6 ohm Coil.

I had the boat running every day last week without a single problem. Fired right up hot or cold.

Matt L.
07-10-2012, 11:35 AM
ditto, no ballast resistor.

DH9441
07-10-2012, 12:17 PM
I about to go the Pertronix Ignitor II electronic ignition system. This is the coil I have now. Will it work.


http://www.westmarine.com/webapp/wcs/stores/servlet/ProductDisplay?productId=94400&catalogId=10001&langId=-1&storeId=11151&storeNum=50366&subdeptNum=50367&classNum=50369

thatsmrmastercraft
07-10-2012, 12:32 PM
I about to go the Pertronix Ignitor II electronic ignition system. This is the coil I have now. Will it work.


http://www.westmarine.com/webapp/wcs/stores/servlet/ProductDisplay?productId=94400&catalogId=10001&langId=-1&storeId=11151&storeNum=50366&subdeptNum=50367&classNum=50369

Sierra 18-5435 (http://www.go2marine.com/product/83468F/ignition-system-coil-internal-ballast-resistor-style-18-5435.html) has an internal resistor and is designed to work with a points style system.

tockit
07-10-2012, 01:01 PM
ditto, no ballast resistor.
I noticed there are a couple other wires going to that resistor. Maybe a sending unit???

Any idea what else would be wired into it?

Thanks!

Matt L.
07-10-2012, 11:54 PM
I'd have to look at mine. I seem to remember connecting a couple of those together. The Pertronix instructions seemed to have addressed that.

Later,

Matt

Wired_Right
07-11-2012, 12:23 AM
I just converted the points on my '89 351W to a Pertronix Ignitor II electronic ignition, do I still need the ballast resistor?
I was told that I don't but wanted to verify it.

Thanks!

Download the directions from Pertronix.

The resistor can be used 12v+ ignition wire & Pertronix's 12v+ to one side of resistor and other side of resistor goes to 12v+ on coil

http://img.tapatalk.com/45b5f35e-f1ae-3957.jpg

Lumbergh
07-11-2012, 12:37 AM
In my research I found the NAPA IC64SB is used as a replacement coil that does not require the ballast resistor when doing the electronic ignition upgrade.

thatsmrmastercraft
07-11-2012, 12:47 AM
Download the directions from Pertronix.

The resistor can be used 12v+ ignition wire & Pertronix's 12v+ to one side of resistor and other side of resistor goes to 12v+ on coil

http://img.tapatalk.com/45b5f35e-f1ae-3957.jpg

These are instructions for an Ignitor system, not an Ignitor II. The ignitor II can be used with either the original coil or the low resistance (0.6 ohm) coil.

Ignitor II systems develop up to 4 times more energy between 3000 and 5000 RPM than standard ignition systems. High RPM performance is improved when used with the Flame-Thrower II super low resistance (0.6 ohms) 45,000 volt coil.

http://www.shopatron.com/products/productdetail/part_number=91581/591.0.1.1

tockit
07-11-2012, 12:56 PM
What does that resistor do with electronic ignition?
I was told with breaker points, it keeps you from burning up your points.
Not sure what the purpose of it is with electronic ignition though?
Can anybody explain that?