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-   -   MSD Coil Ballast Resistor Needed? (http://forums.pelicanparts.com/porsche-911-technical-forum/900715-msd-coil-ballast-resistor-needed.html)

dicklague 02-11-2016 05:23 PM

Quote:

Originally Posted by scarceller (Post 8994079)
Since the thread is about a possible aftermarket coil that may/could work properly, how about this one?
http://www.msdperformance.com/Products/Coils/Street/Strip/8253_-_HVC-2_Coil,_6_Series_Ignitions.aspx

It's a 'HVC-2 Coil, 6 Series Ignitions' from MSD, looks very different but here's the specs:

Turns ratio: 100:1
Primary resistance: .16 OHMs
Secondary resistance: 630 OHMs
Inductance: 3.5 mH
Maximum voltage: 44,000 Volts
Peak current: 450 mA
Spark duration: 450 uS
Weight: 3.75 lbs

Not cheap, runs about $200!
thoughts?

or this:


http://forums.pelicanparts.com/uploa...1455243733.jpg

rick-l 02-11-2016 07:35 PM

Quote:

Originally Posted by scarceller (Post 8994079)
Since the thread is about a possible aftermarket coil that may/could work properly, how about this one?
HVC-2 Coil, 6 Series Ignitions - 8253

It's a 'HVC-2 Coil, 6 Series Ignitions' from MSD, looks very different but here's the specs:

Turns ratio: 100:1
Primary resistance: .16 OHMs
Secondary resistance: 630 OHMs
Inductance: 3.5 mH
Maximum voltage: 44,000 Volts
Peak current: 450 mA
Spark duration: 450 uS
Weight: 3.75 lbs

Not cheap, runs about $200!
thoughts?


I'd say no. The 0.16 ohms lets it charge really fast and because the coil resistance is low it makes the driver dissipate about 100 Watts when in hold mode. I don't know the specs for the proprietary Darlington in the DME but I doubt instantaneous Ptot is 100 Watts. You could change the dwell table.:)


Quote:

Originally Posted by dicklague (Post 8994440)

That is part of a "Complete capacitive discharge ignition system for 4-6-8 cylinder race engines" part of Daytona Sensors CD-1 Ignition System. They don't give any data for it and I bet it is tailored for their CDI sytem


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