When you pulled the turbo the first time,was oil coming out the exhaust manifold then?And going into the turbo? My first thought after you running it without the turbo,is oil laying in the valve cover,and not returning to the pan.Can you see the intakes thru the exhaust ports-are they oil soaked?But since the problem occurred before any work was done-why did the first 'rebuild' happen,or were they even into the engine at all-it seems like over oiling to the top end,or not returning.Is this an over head cam engine?Maybe oil leaking from an oil passage/bearing? Maybe oil return blocked-pour clean oil down it and see if it goes to the pan or backs up?Can you run it without the valve cover,I know it's messy,but maybe lay a heavy towel over it,and lift it up and peak.I don't know what all you have tried,but these are a few ideas maybe you can try. Is this a huei engine-can oil pass thru the injectors,I don't think so-if it is,how are the injector o'rings?Let us know what you find,Mark.
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Today's Featured Article - Fasteners: The Nuts and Bolts of Nuts and Bolts - by Curtis Von Fange. The nuts and bolts of nuts and bolts is an interesting and essential piece of knowledge that applies to our older tractors. An improperly torqued capscrew on an engine head or a shear bolt that is too hard on the driving shaft of a bushog can create havoc and make an expensive and uncalled for repair. Let�s examine the purpose and design of these fasteners in order to ensure their proper use. Fasteners are probably one of the aspects of mechanics that is given the least amount of thought.
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