Hey All,
Question, is the 'External Ballast' I keep seeing people talk about that red
wire that is covered with a white mesh? I saw this wire on the TR6 75 wiring
diagram, and I've found this wire on my wiring harness. What is it's purpose?
Later,
JHD IV
>>> "Bob Danielson" <rdaniels@snet.net> 01/29 8:25 AM >>>
For what it's worth...... the PO put a Lucas Sport Coil on and left the
external ballast attached. After the car warmed up it would miss like crazy.
I tried regapping the plugs to no avail. I finally spotted the ballast (DUH)
and disconnected it. The miss went away.
Bob Danielson
75 TR6 - Current status at:
http://pages.cthome.net/BobD
-----Original Message-----
From: DANMAS <DANMAS@aol.com>
To: mlibhart@feist.com <mlibhart@feist.com>
Cc: triumphs@autox.team.net <triumphs@autox.team.net>
Date: Wednesday, January 28, 1998 11:59 PM
Subject: Re: Electronic Ignition
>In a message dated 1/28/98 8:49:11 PM Eastern Standard Time,
>mlibhart@feist.com writes:
>
>> Am I correct in my belief that the
>> Lucas Sport Coil will pose no problem due to the fact that it has enough
>> internal resistance??
>
>Martin,
>
>I have been running that exact set-up in my TR6 for about 5 years now, with
no
>trouble at all. When they say a ballast resister is required to limit coil
>current, I believe they are talking about protecting the coil, rather than
the
>control module. The instruction manual that came with mine also covers the
>XR3000, and says that unit has "a computer chip which controls coil current
>and dwell," thus eliminating the need for ballast. Since the XR700
doesn't
>have this feature, a separate ballast is required if the coil needs one.
>
>It's interesting that they give a figure of 3 - 4 ohms for a Lucas coil in
>your manual. In my older manual, they say "Coils with internal resistance
>will measure more than 1.5 ohms..." Obviously an error they have since
>corrected (well, not really an error, since 3 IS more than 1.5!!).
>
>Dan Masters,
>Alcoa, TN
>
>'71 TR6---------3000mile/year driver, fully restored
>'71 TR6---------undergoing full restoration and Ford 5.0 V8 insertion -
see:
> http://www.sky.net/~boballen/mg/Masters/
>'74 MGBGT---3000mile/year driver, original condition, slated for a V8 soon!
>'68 MGBGT---organ donor for the '74
>
!
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