The KEY is - you have to either run an adjustable vacuum advance such as the Crane unitor limit the travel of a stocker. As many of you are aware, timing and vacuum advance is one of my favorite subjects, as I was involved in the development of some of those systems in my GM days and I understand it. Nice informative piece thanks for sharing. If the advance curve is setup for its application then manifold source advance is more predictable and reliable IMHO. As RPM increases, the weights swing out, moving the location of the reluctor tabs relative to the magnetic pickup.
Lets say you encounter a hill or go to pass another car while cruising down the highway.
Vacuum Lines Connection
Timing that could potentially damage an engine at wide-open throttle WOT can actually help it achieve significant mile per gallon improvements on the highway. It is sensible to limit use of medication during pregnancy whenever possible. Vacuum advance, on the other hand, responds to engine load and rapidly-changing operating conditions, providing the correct degree of spark advance at any point in time based on engine load, to deal with both lean and rich mixture conditions. Ported vs manifold vacuum advance April 1st, When the source of vacuum dissipates, such as at WOT conditions, the advance returns to wherever it would normally be at that RPM. The amount of advance added by the distributor, combined with initial static timing, is "total timing" i. Try hooking it up to the manifold vaccum port and i bet it will idle much smoother.