Not Ranked
Dana I have the common MSD 85805 I believe mechanical advance. I checked initial timing at 1100 rpm and was 18 degrees with 34 total advance. When fans kicked on or I lowered idle to around 800rpm the initial timing was 10 degrees. So it appears it is idling with initial advance and makes since when rpm drops the timing retards and continues to drop rpm. Called and talked with an employee with KCR. I did a test this evening as he suggested to see if the car idled better. I was asked to set the initial up to 26 degrees advance then lower idle, turn on fans and see what happens. I set initial at 26 degrees, lowered idle to 1100 rpm, turned on fans and the rpm dropped maybe 25 rpm and held. So I took the bushing out at the mechanical advance and it appears to have blue coloring and measured .340. I've sent him an email this evening of my findings to see what I should do next. Until tomorrow!
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