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Paul - I'm simply suggesting the RUNNING lash clearance gets smaller and smaller with increasing temperature on a RUNNING engine, and that the component with the greatest influence on lash is the expansion of the valve between it's cold and operating states.
When you shut down a running engine, the valve loses its heat very very quickly, much more quickly than the heads/cams/followers, and I contend that by the time you get to measure the clearance, the valve would have contracted significantly, thereby INCREASING the HOT stationary measurement (as you and others have found) at the time the measurement is taken.
My point is that the clearance you are measuring, is NOT the running clearance, which is significantly less than the setup or hot measured (feeler gauge) clearance.
I've never measured the RUNNING clearance or HOT stationary clearance. I have no doubt the HOT stationary clearance exceeds the COLD stationary clearance.
Hope I've clarified
John
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