Re: Deja Vu

Posted by PackardV8 On 2011/11/20 21:11:28

"The problems seem to show up in moderate usage at speeds well under severe which indicates something more esoteric as evidenced by the numerous service bulletins."

U mite have a good point there. My 56 Exec had a worn out pump at 34K miles. I know of (but not personaly) the ORIGINAL owner of the car. I have been under the impression from those that did know him personaly that it was used by the original owner mostly thru slow city drivng conditions.

As for "throwing oil at the problem":
I converted to the Olds pump for a variety of reasons NOT related to increasing oil pressure or volumn. The increased oil delivery was only a peripheral benefit in my case. BEFORE OLDS conversion existed I had tried a variety of Packard oil pump changes as outlined in the SC's and STB's as well as a few of my own ideas. Bought some NOS parts from big name Packard vendors to rebuild pump with. HOWEVER not all parts are available (at that time) and the LATE pressure relief piston was claimed as not existing. Among other problems that i will not bother to piss and moan about here.

About 1 year before Olds conversion was discovered i had a good pump set up in my car:

LATE pump.
NOS input shaft.
Bushing ala Aller pump.
LOWER bushing ala PI "Redesign".
OIl groove to feed bushing ala SBC oil pump design.

It worked great however there was STILL a very slight HIGH SPEED ONLY lifter noise that would religously show up at 2700 rpm after about 5 miles of running.

I got tired of patching together parts from USED pumps with NOS parts and some parts NLA etc etc.

I put the Olds conversion on. ALL problems solved.

Edit: IF ( NOTE I SAID "IF") there is some kind of alignment problem ( due to PMCC foundry/machining) with the distributor shaft to the block and therefore an alignment problem with oil pump AND the pump wears prematurely THEN i go to local discount store and buy a BRAND NEW Olds pump for about $75 and install it same day.

What part of that does anyone not understand????