[TR] distributor advance

Peter Arakelian PeterAra at msn.com
Thu Feb 27 16:48:12 MST 2020

Have an early 71 TR6, still has the 41306 distributor with dual vacuums, advance and retard.  Did a little work on my distributor, wanted to check the function of the mechanical advance since I came across a new set of advance springs.  I know they are correct because they are Lucas and the correct part number as listed in the Lucas master catalog.
the old springs were visibly different and softer.  The weight in my distributor was marked 13 degrees.  After I changed them, my timing at idle advanced 10-15 degrees.  I reset the timing to 8 BTDC.  I have always run there.  I use the advance 'till it pings and back off method. Have had it as much as 10 BTDC with no ping, but I prefer to run at 8. My retard works correctly, because it passes the test -idle increases 300rpm when pulled.  Still no ping under the test - high gear, full throttle 30-50 mph.  And no ping accelerating at full throttle from 70-80.
Now...am I correct in thinking the car should run better at speed (3200rpm)?  My thinking is that the timing is more advanced at that rpm with the correct springs, than it was previously.
Peter Arakelian
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