Re: [DML] Tune-up
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Re: [DML] Tune-up



The ignition amplifier is tuned to use the stock coil. I had always 
suspected this after we experimented with different "performance" coils 
on #2727 when it was converted to a Renaulr 2.5turbo and was running up 
to 15psi boost. The only coil that didn't have the spark blown out at 
4psi was the original one. It continues lighting up the cylinders as 
high as we could go with the boost. Apart from using NGK turbo plugs 
native to that engine, the entire ignition system is totally stock (not 
25 years old though).

My suspicions were confirmed when one of the guys on DMCTalk actually 
checked the design of the amplifier and it is indeed tuned specifically 
for the original coil.

Make sure all your coil and ballast resistor connections are replaced 
and clean. Damp weather problems are typical of that

Martim

On 17/04/2010 21:42, stainlessilusion wrote:
> Guys; I am working on my D a little since I have a rough running engine, and am curious what the original coil has for output voltage. I'm looking at John's 25,000 volt Bosch coil [as an upgrade?] since I doubt the stock one has that much punch to it. I have +4 plugs that are a little old but few miles and are still in good shape; also Johns 8mm wires and upgraded resistor. I once used the blaster coil with my setup but I remember having problems with it - I believe it was melted distributor rotor but can't remember correctly. Nonetheless, with what I have as far as plugs, wires and resister; which coil should I be going after? My engine runs like garbage when it rains, and when it is dry it sputters at stops from time to time and just doesn't feel "right". Thanks guys -----Dani B. in FL!
>
>    



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