Re: Hydralic Valve LIfter Problem

Posted by Ross On 2022/8/22 17:12:34

Before I rebuilt the engine in my old '56 I would get a couple noisy lifters whenever the level got down to "FULL". With a quart over she was quite well behaved. This was standard procedure with the oldtimers in the Packard Club back in the eighties when several were still using V8 cars for daily chores.

Well yes, if you leave the lifters always making noise you will end up with damage. All my experience points to aeration of the oil as the culprit and the source of the air is where the shaft enters the pump. Keeping the oil over full floods that juncture and hinders ingress of air. That works only up to a certain point, but it is a very easy bandaid.

When I rebuild those pumps I cross drill the exit passage so it supplies oil under pressure to the bushing area.