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I plan to remove the cast valve covers to look at this oil system. I have read that it can be hard to get these to seal. Mine are not leaking now so would hate to create a problem. I am guessing there is lots of good advice on what type of gasket works best for the aluminum cast covers, would appreciate the advice.
Thanks

Thanks Ted-I will pull the valve covers and send photo's. Harold

Without more details, that copper line sounds like a ‘fix’ for the rockers not oiling as they should on the right bank.  Once you do pull the valve cover, you can actually see where the line attaches and verify that this is indeed the case.  I have come across several core engines where overhead oilers were installed only on one side of the engine and most of those were the result of an improperly installed center cam bearing.  Installing the line under the valve cover gasket could have been due to not having the kit that used a hollow valve cover retaining stud.  Or, if someone was trying to hide the overhead oiler, then the snaking the line under the valve cover would have been an option.

Lorena, Texas (South of Waco)

Not sure I understand what you mean.  Exactly where does the oil line end up ? Right side of then engine is the passenger side.  Pics would help a lot

.ote]Skyliner57 (8/9/2024)

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54 Victoria 312;  48 Ford Conv 302, 56 Bird 312
Forever Ford
Midland Park, NJ

I just bought a 56 Victoria, it may have a 312 engine. There is a oil line running from the oil sending gauge to the right side of the engine. I assumed it was capped off and had been used for an auxilary under the dash gauge at one time--nope it goes into the back side of the "head" on the passenger side. I have not pulled the cast aluminum valve cover off to see if the line is an auxiliary line to the rockers. The valve cover does no leak, I would prefer not to disturb this.
For all of you seasoned Y Block experts was this an acceptable fix at one time. Thanks. Harold

 blind hole,

Regarding the rocker shaft #2 & #7 oiling holes.  Are they supposed to have a threw hole, or just a  blind hole to feed the shaft.

my 1st y block was a 1955ford(meteor)  worked as a mechanics helper that gave access to free oil(seares1 for Diesel engines. changed oil and filter,every1000. miles.
I sold the car with 90,000 miles. adjusted  valves one time.  no rocker problems, no rear seal  issues . drove  the car like most  young  guysvqlve float  to next  gear
o

There are some rocker arm shaft suppliers that put the angled slots across the oil holes while others do not.  You can find both the slotted and non-slotted shafts for the FYB, LYB, FE, and MEL engines depending upon the shaft manufacturer.  The advantage of the slots would be additional oil on the loading side of the rocker arm thus reducing the wear factor.  When using aftermarket rocker arms, the oil hole or slot in those does not always align with the oil hole in the shaft so the slots help with that.

If grinding the slots in shafts that do not have them, then a thorough cleaning afterwards is mandated.  While removing the end plugs would help the cleaning process, flushing them for a period of time without removing the end plugs also works.
  

Lorena, Texas (South of Waco)