Peter......
Do I understand you correctly? Are you saying ALL coils either have a
ballast resistor in them or use an external ballast resistor?
That would be the first time I've heard that and, I'll admit, I'm somewhat
skeptical. I've always understood a 12 volt non-ballasted coil takes 12
volts to make a spark. A ballasted coil requires only 8 volts. Are you
saying all 12 volt coils have an internal ballast that reduces their current
requirements?
Mr. Cederstrand, if you are reading this, would you care to comment?
Lawrie
British Sportscar Center
-----Original Message-----
From: Peter C. <nosimport@mailbag.com>
To: Neil Cotty <neilc@tradesrv.com.au>; mgs@autox.team.net
<mgs@autox.team.net>
Date: Tuesday, August 17, 1999 7:44 AM
Subject: Re: Coil Question
>Be careful how you read their instructions. Catalog writers,both Bosch and
>Lucas, use imprecise language at best. Coils either HAVE a ballast resistor
>in them, or require an external resistor. The language of "... X car
>requires a coil with a ballast resistor" usually means that that a coil
>that _contains_ a ballast resistor is needed. This is true of the MGA and B
>where the wiring schematic does not show an external ballast resistor in
>the vehicle's loom.
> Been around the block onthis one many times.
> Peter C
>-----
>At 11:15 PM 8/16/1999 , Neil Cotty wrote:
>>Hi all,
>>
>>Getting my new Bosch dist. tomorrow so I decided to replace the one I took
>>from my MGB which is 29yrs old with a Sport coil type. Bosch have just
>>re-released their GT40 in the round style so I won't have to go drillin'
>>holes in the A to fit their new funky shaped one.
>>
>>The Bosch catalog says the MGA requires a coil WITH a ballast resistor.
>>Surely this isn't right. The one I took off my A was a Lucas HA12, and the
>>one off the MGB (70) didn't use a Ballast resistor either. Can someone
just
>>clarify that for me that I need one WITHOUT a ballast resistor. I'm 99%
sure
>>I'm right, just don't want to order till I'm 100%..! <G> :)
>>
>>Cheers,
>>Neil.
>
>
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