Posted by Bob M on October 29, 2009 at 12:09:33 from (151.190.254.108):
In Reply to: Pertronix Ignitor posted by Mark Warden on October 29, 2009 at 11:41:16:
Mark - I installed Pertronix system on friend's 3020 to a couple years ago. It works well and we learned this in the process:
Presuming your existing wires are OK (no insulation cracks, etc) they'll work fine with the Pertronix. But if they wires are marginal replace them with new OEM-style copper core wires. Also if the distributor cap is cracked, is crazed on the outside or has carbon tracks inside, etc. replace it too.
If the plugs have been working OK stay with what you've been using. The Pertonix will have no effect on spark plug heat range, etc. You may however open the plug gap to .045 or more to take advantage of the extra spark voltage.
You may find a greater tendency toward misfiring with dirty, partially fouled plugs with the Pertonix. If that's the case close the gap back down to .030 - .035 and go up a heat range or two. Or better yet correct the source plug fouling if the engine's running rich/burning oil.
Ignition timing should not be changed. All the Pertronix is does is provide a higher voltage spark that does not deteriorate and change timing as the breaker points wear.
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