Re: BigKev's 1954 Packard Clipper Deluxe Sedan

Posted by BigKev On 2010/12/12 20:34:23

Guy, I do have a stethoscope, and have run it over just about the engine engine. Those noise does not appears to come from the lifters. I have run the stethoscope all over the valve train and the noise is not louder there, and every lifter has the exact same noise. So no "clackers".

Dave, in the video I posted above, you should be able to hear the noise. Also you can see the valve action while it is running.

Jim called with me a theory after talking to a Packard engine rebuilder he knows. One theory is the perhaps a rod bolt is grazing the bottom of the oil pan where the pan is very shallow. I guess the 288s and 327s use the same pan, but clearance is very tight on the 327 because of the stroke. So if the pan bottom is not convex enough a rod bolt could graze it.

For now I put that valve covers back on as I would have a chance to get back under there until after X-mas with work this week, and business travel next.