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On 3 Nov 2002, at 22:26, Jim Adney wrote: > Extra advance will actually make the coil run hotter, but that's with the std > ignition. It may not make any difference at all to the Pertronics. In general, > the dwell to shoot for is 45-50 deg. I wanted to add something to this: There was an interesting thread recently on one of the electronics newsgroups where we managed to slaughter a number of sacred cows related to ignition systems. One of these was the old one about the capacitor being necessary to tune the spark to the right resonance, which is NOT true. In the course of this discussion, someone pointed out that putting the duty cycle at 50% (or in our case, putting the dwell at 45 deg) places the points opening at the place in the cam where the points will open at the max rate. This is important to keep the points from arcing and pitting as they open. So, again, I recommend that you set your dwell to 45-50 deg. - Jim Adney jadney@vwtype3.org Madison, WI 53711-3054 USA ------------------------------------------------ To unsubscribe, E-mail to: <type3-off@vwtype3.org> For more help, see http://vwtype3.org/list/