Re: TrevorK's 1955 Packard Patrician

Posted by fredkanter On 2017/7/2 15:57:39

Insufficient engine oiling was not a problem on V8's so the new pump has nothing in that realm to improve. Bearing life is long as long as oil is changed per recommendation.

The original pump has a design flaw caused by the addition of a vacuum pump. It puts a sideways thrust on the pump shaft which results in an ovaling of the hole, the result is that air is drawn in. This air wind up trapped in some/all lifters.