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Re: Pertronix questions (archive)

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Posted by Ron Serafine on April 28, 2000 at 22:46:41:

In Reply to: Pertronix questions posted by Zenben on April 28, 2000 at 20:06:47:

I just drove over to CNPR & got my Pertronix & Flame Thrower epoxy coil from Carl Nelson (http://www.justbmws.com). I used a temporary male-male (gender-bender) connector to hitch up the black Pertronix wire out of the distributor to the new coil. As you may know, this original (black wire also) has the tach feed jumpered into it @ the distributor end. This works just fine. I plan to cut the Pertronix black wire to a suitible length & put a mating male connector onto it for this OEM cable.
BTW, measuring the voltage @ both sides of the ballast resistor prompted me to move the red Pertronix wire to the upstream side of the resistor where the voltage won't be so likely to dip too low when starting the engine. This can get down to ~8.5 volts when cranking and the most likely failure of the Pertronix is too low an input voltage, or so it says in the installation instructions.

I just re-timed the TII by ear afterwards because I was pressed for time. This weekend I am going to put a light on it & do it right. But already I notice a stronger pull under heavy load in top (5th) gear and it winds to the redline just as quickly as it did when I had the ol' Delta Mark 10b C.D. ignition in it -which a mechanic burnt up on me after 20 good years. Oh well; This gave me the excuse I needed to get rid of the points which I had promised it over 20 years ago!

You should have a similar result or better with the MSD in the circuit!


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