What causes lifter noise in my V8 Packard at higher speeds – also had it at low speeds?
Question: My 5672-1074 was a local one owner car with 34K miles when I bought it 8 years ago with all documentation and E. Grey Smith Nashville Packard dealer work orders. The pump to shaft wear was .005 inch. After a series of different attempts, I finally got the shaft clearance to .001 inch and the SEVERE lifter noise has STOPPED for over 12kMiles of use now.. However, it does have a HIGH speed lifter noise that comes in only at 2800 rpm and above but even that lifter noise is only about 10% of noise I had at low speeds before pump fix. I found that disconnecting the filter stopped the high speed lifter noise completely. I recently rerouted the filter feed line from back near the oil sending unit and that seems to have cured the problem pending more testing. Answer: Thinking about this problem, I believe that you have most likely two problems instead of one. Lets discuss the oil filter first. In the case of Packard they used a by pass system the was common in the mid fifties and dow