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At what RPM does the centrifugal advance kick in on the Delco distributor?
I just tuned my engine ( 1976 model - Serial 196156) and I don't seem to be getting any centrifugal advance.
The points were set to a dwell angle of 32 degrees and using a timing light , the initial timing was set to TDC at 600 RPM. Revving the engine up to 1600 RPM, my normal cruising range, the timing does not advance and remains at TDC.
I then adjusted the distributor to produce the maximum engine RPM starting from an initial setting of 1600 RPM ( per the procedure in an old Atomic 4 manual). This setting, checked with the timing light provides about 15 - 20 degrees of advance, but then I have the same advance at 600 RPM at idle.
I checked the centrifugal advance weights and they are free but don't seem to have any effect on timing in the RPM range that I normally run. Are there any other factors which affect the centrifugal advance?
Should the timing be TDC at idle and advance to 15 -20 degrees at 1600+ RPM based on centrifugal advance or should the timing be constant at 15 -20 degrees advance at idle through 1600 RPM?
omec
I just tuned my engine ( 1976 model - Serial 196156) and I don't seem to be getting any centrifugal advance.
The points were set to a dwell angle of 32 degrees and using a timing light , the initial timing was set to TDC at 600 RPM. Revving the engine up to 1600 RPM, my normal cruising range, the timing does not advance and remains at TDC.
I then adjusted the distributor to produce the maximum engine RPM starting from an initial setting of 1600 RPM ( per the procedure in an old Atomic 4 manual). This setting, checked with the timing light provides about 15 - 20 degrees of advance, but then I have the same advance at 600 RPM at idle.
I checked the centrifugal advance weights and they are free but don't seem to have any effect on timing in the RPM range that I normally run. Are there any other factors which affect the centrifugal advance?
Should the timing be TDC at idle and advance to 15 -20 degrees at 1600+ RPM based on centrifugal advance or should the timing be constant at 15 -20 degrees advance at idle through 1600 RPM?
omec
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