Compression question :
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Compression question :
6'er guys, I need some compression expertise information. Anyways, now to interpret the data. I did everything as I was supposed to do except remove the air cleaner off the carb. My lowest reading was 160 psi and the highest was 180 psi. The average was 168. The difference appears good as well as the average value for my '79 300-6, right? It did take about five successive strokes in order to get the highest reading (on each). This indicates worn rings, right? If I had any cracks in the head or block would the compression test indicate it?
