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Re: Ballast vs non-ballasted ignition system

To: Ed Hutchinson <seah@sunyit.edu>
Subject: Re: Ballast vs non-ballasted ignition system
From: Joe Curry <spitlist@gte.net>
Date: Mon, 22 Apr 2002 13:14:11 -0700
Cc: Triumphs@autox.team.net
References: <5.1.0.14.0.20020422153219.03268328@pop.sunyit.edu>
Ed Hutchinson wrote:
> 
> I currently have the Crane XR 700 Electronic ignition on my TR6. I am also
> running a Lucas Sports Coil. I noticed in the most recent Moss catalog that
> the Lucas Sports Coil works with non-ballasted ignition systems only. On
> the same page it shows a Crane Ignition Coil which complements the Crane
> XR-700 Ignition kit and includes a ballast resistor. I'm getting more and
> more confused as to what I should be using.
> 
> How does the car run if you have a miss-matched system? Does it skip, burn
> oil, run rough, what?
> 
> I am somewhat mechanically challenged and could use whatever help anyone
> could provide.
> 
> thanks
> 
> Ed

Ed,
I am not sure if the Lucas Sport Coil is internally ballasted or not. You can 
check it to see if it is internally ballasted by measuring the
resistance between the poles.  An internally ballasted coil will have 3 to 4 
ohms of resistance.  If it is ballasted, use it as is.  If it is not
ballasted and there is no external ballast resistance (either a ballast wire or 
resistor), then you will have to add a 1.2 to 1.9 ohm external ballast
resistor between the COIL+ terminal and the ignition switch.

Regards,
Joe

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