The Ford Barn

dave11 · 02-23-2016, 10:24 AM

Wondering how excessive ignition advance affects engine performance. The engine in this case is a 31 Pylmouth that has a centrifugal spark advance. In a modern high compression engine if the ignition advance is set too far before top dead centre the engine starts to ping under load. However in these low compression engines I have never heard one ping. There is obviously a point of deminishing returns?.The other indicator of too much advance is when starting the engine kicks back on the starter. The question is in a low compression engine can exessive ignition advance harm the engine ?

Dave

02-23-2016, 10:24 AM	#1
dave11 Member Join Date: Sep 2012 Location: Lillooet BC Canada Posts: 59	ignition advance, not model A Wondering how excessive ignition advance affects engine performance. The engine in this case is a 31 Pylmouth that has a centrifugal spark advance. In a modern high compression engine if the ignition advance is set too far before top dead centre the engine starts to ping under load. However in these low compression engines I have never heard one ping. There is obviously a point of deminishing returns?.The other indicator of too much advance is when starting the engine kicks back on the starter. The question is in a low compression engine can exessive ignition advance harm the engine ? Dave