I hope this doesn't break any rules...
For those interested in how oil is routed to the rocker arms in all low pressure dipper lubricated 216's and 235's (ONLY FROM 1939 AND UP)...
and the part the oil distributor valve plays...
and are able to sign in to the Stovebolt website...
there is this:
https://www.stovebolt.com/ubbthread...ribution-valve-question.html#Post1481226 A poster called "b********r makes things clear with a very good picture.
The only thing left to clarify is that because the rocker arm supply fitting is connected to the HIGH pressure side of the oil distributor valve... and the right hand (rear) passage under the oil distributor valve leads from behind that fitting to the LOW pressure side of the valve...
oil ALWAYS flows OUT of that passage to the low pressure side of the valve, and under the oil distributor valve cover to the connecting rod supply side.
This passage was meant to bleed some oil off the flow to the rocker arms, and worked with an orifice in the aforementioned brass fitting to regulate the flow to the rocker arms.
This agrees completely with the information given in the old Chevrolet literature I am attaching excerpts from and available at "oldcarmanualproject" here:
http://chevy.oldcarmanualproject.com/chevyresto/index.htmThis means that the rocker arms are ALWAYS supplied with a regulated oil supply.
And one more important thing to note...
Contrary to what "some people" may say, except for possibly a few seconds after start up...
The oil distributor valve IS ALWAYS OPEN as long as the engine is running and it is IMPOSSIBLE for it to cut off the supply of oil to the rocker arms at any time.
Hope this helps clarify some of the interesting "nuances" of the "pressure stream, 4-way specialized" lubrication system! :-)
PS
Many thanks to B********r for the pictures over at "Stovebolt"
