Quote:
Originally Posted by Myron Piatek
With my limited experience, I believe that anything much lower than 11 lbs would probably work better with vac-u-pan system or vacuum pump, which aren't legal for Stock. As mentioned earlier, ring seal and life is influenced by the precision of machine work and maintaining round cylinders.
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I find you have to use a napier second ring with lower tension oil rings. you can run 6 # oils with napier and engine will run dry. without vac pan setup. breathers only. been using this in small block mopars last number of years. wall finish can impact results also.