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Old 07-21-2025, 09:15 AM   #20
hueyhoolihan
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Join Date: Dec 2024
Location: central coast california
Posts: 255
Default Re: 49 8BA has no power

i'm assuming the timing was retarded, but it would be nice to know which direction. anyway...glad it's running well.

here's something interesting...when Google was asked this: "did vintage cars have the ability to retard timing so as to make starting easier"

the answer: "Yes, some vintage cars did have the ability to retard (delay) ignition timing to make starting easier, particularly those with manual spark advance controls. This was especially crucial when crank-starting an engine, as it helped prevent the engine from kicking back (suddenly rotating backward), which could cause injuries to the person cranking the engine.
Here's how it worked:
Manual Spark Control: In very early cars like the Ford Model T, the driver would manually adjust the spark timing using a lever, typically located on the steering column.
Retarding for Starting: To start the car, the lever would be moved to the fully retarded position, meaning the spark plugs would fire later in the piston's stroke. This allowed the hand-cranked starter to more easily turn the engine over.
Advancing Once Running: Once the engine started, the driver would gradually advance the spark (make the plugs fire earlier) to optimize the timing for smooth running and better power delivery.
Later on, mechanical and vacuum advance systems were introduced to automatically adjust the timing based on engine speed and load, according to the Antique Automobile Club of America - Discussion Forums. These advancements gradually phased out the need for manual spark control, but the principle of retarding the timing for easier starting was still relevant. Modern vehicles with computer-controlled ignition systems handle all ignition timing adjustments automatically."

Last edited by hueyhoolihan; 07-21-2025 at 09:22 AM.
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