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Join Date: Oct 2017
Location: houston, texas with Enzo SPCA # 8995
Posts: 445
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

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Steve Meltzer
'69 911E/bastard
Old 12-02-2022, 08:15 AM
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Location: Kansas City
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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.
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it's not leaking....it's just marking it's territory
Old 12-02-2022, 05:52 PM
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Quote:
Originally Posted by Zuffenwerker View Post
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!
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Dave
Old 12-02-2022, 06:09 PM
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Look at Pertronix coil # 45111 - 0.6 ohm and epoxy filled. I have been running one for years.

Old 12-02-2022, 08:37 PM
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