Death Flash fixed and vacuum no longer an issue
#14
#17
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Back to the original question:
Ignition timing does affect engine vacuum.
In the old days of the 1960s on carb engines before pollution controls
we commonly used to set engine idle ignition timing
by watching vacuum gauge level at idle
and 'peaking' the vacuum with the ignition timing.
At any part throttle engine operation where the load is held constant
the vacuum level will go higher
if the ignition timing is brought closer to 'Mean Best Torque' setting.
If the load is not held constant
but the throttle opening position is held constant instead
then as the ignition timing is improved
the rpm of the engine will go up as the torque goes up
as the vacuum level stays about the same.
Ignition timing does affect engine vacuum.
In the old days of the 1960s on carb engines before pollution controls
we commonly used to set engine idle ignition timing
by watching vacuum gauge level at idle
and 'peaking' the vacuum with the ignition timing.
At any part throttle engine operation where the load is held constant
the vacuum level will go higher
if the ignition timing is brought closer to 'Mean Best Torque' setting.
If the load is not held constant
but the throttle opening position is held constant instead
then as the ignition timing is improved
the rpm of the engine will go up as the torque goes up
as the vacuum level stays about the same.
#20
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now what do i do with the other 58 minutes.