Been away for a week guys   vacuum source at base of carb not intake..Modified the valley pan with bafle and gromet hole for pcv.No oil running down back of engine but will have a look at that port   Thanks Fred

In the case of the coolant leak, were you able to repair the head?

The two instances where there were breaks in the pushrod holes in the Y heads were a result of porting that was performed to the intake ports.  It would appear that the heads did not leak initially but were just thin enough that they cracked and/or broke thru either by heat cycling or distortion after a given period of time.

I did come across another Y cylinder head that was leaking coolant into a cylinder head intake port and was pooling a small amount coolant on top of the valve.   That one was a result of heavy rust/pitting within the interior water jacket that created a pin hole sized leak which in turn would allow coolant to seep into the port of the head.  It was fortunate that particular leak was caught early as it was pooling on top of a valve and not flowing into the cylinder where the cylinder could have potentially hydrauliced when attempting to start the engine which would have broken a piston and/or a cylinder wall.

Lorena, Texas (South of Waco)

Maybe you should have asked what Ted did with the bullet.

Given you’re in Texas, I’m afraid to ask how you installed that bullet.

miker
55 bird, 32 cabrio F code
Kent, WA
Tucson, AZ

Was the break-through hole caused by the push rod rubbing on the head?

I have come across a couple of instances on the Ford Y where there was a hole or break-thru in the pushrod hole within the cylinder head which allowed a direct oil leak into the intake port of the cylinder head.  Both instances had the engines pulling oil into just one cylinder and was bad enough eventually foul the spark plug.  One of these was fixed by installing a bronze bushing into the pushrod hole thus sealing off the leak.  The other was repaired by using a large caliber bullet casing which just happened to fit the existing hole perfectly.  Have seen similar instances on the FE engines but those ‘break-thru’ holes were in the intake manifold rather than in the cylinder head.  They were fixed in a similar fashion.

Lorena, Texas (South of Waco)

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"55  272  with a problem of #8 cylinder pumping out enough oil to run out the manifold to exhaust flange   I have made a few changes and honestly dont know if either has affected the problem  and dont recall which came first.  I installed a 4 barrell set up with a t pot carb , at the same time removed the valley pan and built a baffle and hole to install a pcv ..."

You overhauled the engine and used a 55 or 56 4V INTAKE. There can be problems at #8 at the cyl head and intake mount. 

At the coolant temp switch opening, there are two bolt holes as shown in the above illustration. If these are not used or blocked off, oil will run out of them hitting the valley pan and then running down the rear of the engine. Or could be sucked into a port with a poor seal.

Are you sure this is not what is happening?

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valve seal and guides are good  thanks Fred