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Originally Posted by classicauto
You're 100% positive that when you put the o-rings in the "scrapers", that none were nicked, twisted or otherwise? Were there any flat edges on the orings? Older ones tend to flatten on their sealing surface, and when torn down are basically impossible to get sealing properly again.....even if they were before.
EDIT: how many miles were on the re-used orings?
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Yes, I'm sure none were nicked, scrapped or flattened. They were new viton oil rings.
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A used iron, and BRAND NEW ring and o-ring shouldn't smoke a peep at all. I've never noted any break in period for them before, but I always use new orings (or super-low-mileage-after-popped-seal-ones) The o-ring does more sealing then the scraper really with regards to crankcase oil getting out into the combustion chamber.
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That's what I thought. The oil rings themselves were brand new without defect and installed with lots of oil on them to keep them that way. I find it hard to believe that the oil control rings could go bad only sometimes.
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Increasing the crankcase oil pressure will have zero bearing on what the oil injector nozzles see......unless I misunderstood you there. So that won't be the problem.
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You misunderstand. I've turbo charged my naturally aspirated engine. Would installing a check valve on the air line that leads to the oil injectors remedy this problem or even pose a problem in the first place?