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Message: <blockquote data-quote="57chevythunder" data-source="post: 16521" data-attributes="member: 4881">Hello corvairbob. Just noticed your post and I do have a thought about the oil squirter nozzles: It is my understanding that these were added to help reduce piston temperature. I thought they actually direct a controlled amount of oil up under the head of the piston.Anyway, since you have discovered stuck oil control rings, I will share a small piece of my personal experience a very long time ago on one of my 327 engines in a '63 Impala. I was experimenting with carburetor jetting, and ran it fairly hard for several hundred miles at highway speeds with the fuel mixture so lean that it was causing a slight surge. It immediately began consuming an unreal amount of oil. Upon engine teardown I found stuck oil control rings on every piston. I showed the pistons to a highly experienced chevy engine builder, and his very first comment was that for some reason the pistons had gotten way hotter than they should have.So, quite factually, my excessive lean mistures caused excessive combustion temps, and over-heated pistons, thus sticking the oil control rings.So there is my 2 cents. By over-heating the pistons I made an instant oil burner out of that engine. (that engine never used oil before that)My thoughts: If the oil nozzles that you have in that engine are in fact piston squirters, I think their purpose is to help reduce piston temps to help reduce pre-ignition. (actually detonation, I think)  And if the oil stream is directed correctly, then I doubt the oil supplied by them would be over-loading the oil control rings.Sorry I have nothing to contribute regarding your bolts,,,,  but just wanted to tell you about stuck oil control rings.Hope you find your answers.</blockquote>

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