Quote:
Originally Posted by flaps10
I worded it carefully enough that I felt like I acknowledged where the oil came from. Not trying to get into an argument James, I totally respect your input on anything I've seen here.
My point is that in a normal running engine there should be zero loose metal. Since it would seem that most wayward metal in the M96 comes from the stock IMS the last place I'm worried about pumping metal through is an already failing bearing.
Once any metal starts coming off that bearing the s*** show has begun, and the place I'd LOVE to see protected from loose metal would be the mains and rod bearings, and the LN full flow oil filter does that far better than the stock system.
Those main and rod bearings required more than a little wrench turning for me to hold in my hands.
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Flaps10 (and I have to say I love your handle, being an aircraft engineer - not aerospace mind you despite the fact my disposition is manned spacecraft) don't tread lightly, and please argue. I'm an engineer, not a politician. I respect your opinion though I might not agree with it at first, I have to be convinced. I've had my engine down to the crank and back up again, complete with my own internal IMS modifications. I can confidently say I own the one and only M96-24 with a vented IMS. You chose a bearing lubrication path that I not only came up with first (to my knowledge) but also discounted due to using unfiltered oil in the lubrication system. Particulate (even very small) will damage the surface finish of bearings. As the surfaces are damaged, they begin to damage themselves (brinelling) then it's a quick trip to failure. Roller bearings having line versus ball bearing point contact appear even more susceptible to this damage. That's why I suggested the magnets - they are effective in pulling out very small particles of metal from the oil. My sense is that the configuration you chose should be fine in the long term, but if it were me I'd be sensitive to precluding particulate in the oil - hence the suggestion for magnets.