> Per the book, the Lucas dizzy has a dwell spec of 60* for the points
> style dizzies on the A series motors...
> The Mallory dual-point specifies 41* dwell for a dual-point dizzy on
> a 4-cylinder engine.
> Why the difference??
According to Barney Gaylord, the "MGA Guru", a four-cylinder has no
need of additional dwell (or even as much as Lucas gave it) unless it
is going to be hitting stratospheric RPMs. The Mallory dual-point
distributor in a four-cylinder is more about a higher degree of
precision in this application. IMHO, all the more reason to install
the Pertronix module for it.
http://mgaguru.com/mgtech/ignition/ig200.htm
David L
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