Vince Falter's take on use of the advance lever (which mirrors my own experience.)
http://www.fordgarage.com/pages/bdistributoradvance.htm
Quote:
|
The Model A ignition uses a zero crankshaft degree (TDC) initial timing point so that the engine can be easily started by hand crank, however it should never be run under load in this "retarded" position. The advance lever should always be advanced 1/3 to 1/2 travel (13 to 20 crankshaft degrees BTDC) on the steering column quadrant after starting the engine, and should generally not be run more than 3/4 advanced on the column under any normal circumstances.
|
(bolding mine)
The Model A generally has more "advance capability" than is required - and was actually "engineered out" of capability for the centrifugal advance Model B.
Your engine and timing may vary.
Joe K