> Now that I have converted to negative ground,
> I am using a
> MSD box. The points have lasted for years (I have never changed
> them).
FWIW, I had the same experience with a Lucas dizzy & a MSD. Same set of
points worked fine for 15 years, and were still working fine when I
converted to an optical pickup (because of excess wear in the dizzy).
> Another elementary question: What is the purpose of two sets of
> points in a distributor?
They are phased slightly differently (one set opens first), which allows for
a longer dwell time without having a faster ramp (which can lead to point
bounce).
Randall
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