Alfa Romeo/Alfa Romeo Digest Archive
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Static timing
Simon gave a great description of setting up the timing on the old
Giulietta, and then wrote:
You can static time the car with a 12V continuity tester (AKA bulb on
a wire). Connect one end to ground, and the other to the coil -. Set
the motor at the static timing mark (F) and turn on the ignition.
Rotate the disty until the light just comes on. Make sure you rotate
the disty rotor backwards first to take up any slack. You should also
set the point gap first. After the car is running, you can check the
dwell, and use a timing light to set the max advance to the M mark.
I disagree slightly, maybe its a matter of semantics, but when static
timing, if the distributor's rotor is turning in the forward
direction, the timing point is when the light just goes OUT. (If
rotating in the reverse drection, it would be when the light just
comes on.)
The reason for the light going out, is that the coil is energized by
the current thru it, but makes its big voltage spike when the contacts
open, and the rapid disintegration of the magnetic field across all
the coil wires creates a large voltage for ignition.
Good luck on the restoration!
Len
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