JW Quote:
I also recall Bob Aller saying at a Tech Session in Salado, that it was one of his service managers in Dallas that discovered the oil pump problem of air getting into the pump from wear and misalignment of the driving shaft.
BH Quote:
IMHO, the Olds HV conversion isn't necessary, but simply an alternative for those who want something other than a properly repaired OE pump.
Brian, what you, JW and some others apparently do not realize is that the bottom the Packard V-8 oil pump is
3 inches above the bottom of the oil pan sump! This is with or without the vacuum pump. Not only does this cause a 3in of negative head pressure, it means that the top part of the pump gear casting is
exposed to air. This is the main reason why air is introduced into the oil supply. The Packard oil pump is just a poor design because of this. No amount of "dinking around" with the pump itself will change this.
The Olds HV conversion places the bottom of that pump about 1/4in above the oil pan sump, completely immersing the pump gears and eliminating the 3in negative head pressure. Add in the extra volume and the tappet click and associated bearing problems are solved.
Craig
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