Re: Packard TSB 56T-20 - Low Oil Pressure

Posted by Bowman Davis On 2009/10/28 21:20:36

Packard V8, Many thanks for that info. I will do that as soon as I get my distributor problems corrected.
Now that I have my feet wet, another question comes to mind, that is, if there is a design or application problem with the pump or the actual oil flow in the engine(or possibly both) causing air bubbles in the oil flow in the block and the heads (especially the left bank)shouldn't that make main bearings #2 and #4 more prone to failure since they receive their lubricate from the left bank than #1,#3 & #5, and is there any evidence that is the case?
Another question, has there been any evidence in the failed engines of the oil return passsage at the rear of the left head being plugged or partially obstructed with debris. I would think that would create pump problems and early failure(I believe it is driven off the left side of the engine)as well as noises in the valve train and lower end as well. Or maybe the return is not of sufficient size? Just thinking outloud.