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Definately. More oil = good! The thing that interests |
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| Posted by |
AshsZ (FabZEM All) on May 23, 2003 at 10:40 PM |
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This message has been viewed 159 times. |
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| In Reply To |
That works for fine normal hp but under load of posted by MikeH(Twin GT35BB Incon Z) on May 23, 2003 at 10:23 PM |
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| Message |
me is the fact that the oil pressure is just forcing oil into the bearing through a hole about the diameter of a pencil. The bearing itself is about 5/8" wide which is significantly larger than a pencil. The oil pressure is only getting oil to the bearing and providing a continual source of oil. If the bearing were sealed with oil in it and you neglect heat and oil breakdown, the oil would do the same job it does now. The key difference in that hypothetical is all things are equal except for the pressure. The oil pressure doesn't directly keep the bearing healthy, it only provides a continual flow of oil to the journal. The higher the oil pressure is, the more oil you have going through the bearing. I would tend to think that at a certain point the effect plateaus and there is no additional benefit of higher oil pressure. Simply an adequate amount of oil into the bearing to maintain the film is all you need. Problem is, neither one of us are going to build two engines identically, run them in identical loads and just have one making more oil pressure than the other and see what the case is. Better yet, have 100 engines in a lab all built the same way and performing the same loads but all with variations in oil pressure from 10psi/1000RPM all the way up to 100psi/1000RPM and see which ones fail at what time. I'm just predicting that the engines with lower oil pressure will fail first, but at a certain point, you'll see that increasing the oil pressure doesn't make any difference. Where that point lie - we'll probably never know. 10psi/1000RPM is what I like to stick to but the more you have the better. It just gives you that secure feeling and then one day a piston breaks. LOL
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