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-   -   Using a pertronix coil with cdi (http://forums.pelicanparts.com/porsche-911-technical-forum/1130850-using-pertronix-coil-cdi.html)

steve meltzer 12-02-2022 08:15 AM
Using a pertronix coil with cdi
 
Is it OK to use a 3 OHM Pertronix Coil with a CDI box? I have a '69E/73T motor. thanx steve

Zuffenwerker 12-02-2022 05:52 PM
The car will run but no it’s not really ok. The primary resistance should be very low around .6 ohms. The cdi system is designed to use a low inductance “transformer” coil. You won’t hurt anything by using the standard ignition coil but you’ll be reducing the efficiency of your ignition system.

mysocal911 12-02-2022 06:09 PM
Quote:
Originally Posted by Zuffenwerker (Post 11863074)
The car will run but no it’s not really ok. The primary resistance should be very low around .6 ohms. The cdi system is designed to use a low inductance “transformer” coil. You won’t hurt anything by using the standard ignition coil but you’ll be reducing the efficiency of your ignition system.
It's insignificant!

fanaudical 12-02-2022 08:37 PM
Look at Pertronix coil # 45111 - 0.6 ohm and epoxy filled. I have been running one for years.


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