Re: Packard TSB 56T-20 - Low Oil Pressure

Posted by PackardV8 On 2009/10/29 13:25:26

Bowman,
If and when u do remove the left valve cover keep in mind that the idea is RUN THE ENGINE while the valve cover is removed. The idea to is see if there is any oil delivered to the overhead. Overheads running dry or nearly dry WILL CAUSE NOSIE at any speed! AND sticky valves especialy at higher rpm.

I thouroughly cleaned rocker SHAFT and the oil gallery and installed it during a timing chain and valve job i did on it. For a test drive i drove the car with hood off and valve covers REMOVED. I did this because i was suspicous of the overhead oiling design. After all, i had it all apart for the timing chain and valve job so i was able to analyze it at the time.

I drove the car for 10-15 miles round trip at speeds above 65 mph. thERE WAS VERY LITTLE oil on anything except where it ran down the side of the rocker shaft perches and a few streams along the bottom of the head.

Never so much as drop hit the windshield leta lone any outside of the head.

SO give it a try yourself. I contend that the valve covers are only there as dust shields.

When u remove the valve cover u will most likely see that the inside of the valve cover is dry as a bone.

* special note: non of the above applies to very EARLY 55's.