[s-cars] Coil Replacement Options?

[Kirby Smith]

The number one value of close up coils is reduced EMI.  Multiple coils 
of course eliminate the need for a mechanical distributor.  Otherwise, 
any decent capacitive discharge ignition system can easily blast through 
n feet of ignition cable.  With close up coils, Audi chose not to go the 
CD route, as it was unnecessary at the pressures they intended the 
engine to run.  As far as I have observed on this list, persons running 
over 2 bar gauge find the system adequate, so long as the parts still 
function.  :(

kirby


Dave Forgie wrote:
> Mike:  Interesting thoughts on the GM (Corvette) coils.  However, although the
> remote mounting would be cooler, I would wonder about the extra time and
> resistance to get the charge from the coil to the sparkplug over the longer
> distance.  This what I thought Audi was doing when they converted the 20vt 3B to
> the AAN, i.e. got away from remote coils (okay, one coil in that case) and the
> longer leads to the individual coils and the short spark plug connectors.  This
> change (and maybe some ECU fiddling that it permitted), resulted in 10 hp
> increase (217 to 227 SAE hp (220 to 230 DIN hp)).
> 
> Dave F.
> 
> mlp wrote:
> 
> 
>>I don't know the answer re the 1.8 /or 2.7 tt Audi coils, but I'm told FWIW
>>that some, at least one or more persons have been looking at a GM product
>>(the Corvette) coils as possible replacements.  This would entail
>>substituting spark plug wires for the plug boots, and remotely locating the
>>replacement coils else wheres in the engine compartment, as opposed to in
>>the head where they tend to get, and stay pretty hot.
>>
>>No word on when, if ever this proposed solution may actually be implemented.
>>But I am, as we speak, sitting with one car without a good set of coils
>>waiting for an answer.
>>
>>HTH
>>Mike
>>
>>
>>>-----Original Message-----
>>>From: s-car-list- On Behalf Of Dave Forgie
>>
>>>S-gruppees:  I have posted this same question at least once
>>>before.  The question is whether it would be possible (and
>>>cheaper (??)) to replace our coils with those from say a 2.7tt
>>>or 1.8t.
>>
>>>Dave F.