Bill, The way the Pertronix is made, you could run it with straight voltage and get more punch. My not last but 1 or 2 years instead of 4 or 5. John Hervey www.specialtauto.com -----Original Message----- From: content22207 [mailto:brobertson@xxxx] Sent: Thursday, November 06, 2003 11:55 PM To: dmcnews@xxxxxxxxxxxxxxx Subject: [DML] Re: Kayo Ong's Coil > OK, that corresponds with what I've always been told RE: ballast > resistors -- they are there for ignition module's benefit, not coil's. > Before electronic ignition (breaker points) were no resistors and > system ran full 12v. After electronic ignition voltage lowered to ~10v. > > BTW: high performance MSD/Pertronix/Mallory modules go back to 12v. > > Just dropped my Pertronix in too. Works like a charm, eh? > > Bill Robertson > #5939 [long quote trimmed by moderator]