chevrolet oil orifice

[Maurice Donckers]

Is there somebody who knows what size the orifice is in the T to the oil filter on a 216 engine ?
thanks

[motto]

The oil filter installation on the Chev 216s I am familiar with, (Military Senior), do not have a restrictor in the line upstream of the filter. The restriction is within the filter and in the form of the very small hole that allows oil into the centre tube for draining back to the oil pan.
The only restrictor I am aware of that takes the form of a fitting is the one in the line to the rocker gear. This is a nipple that screws into the distribution valve boss where the line connects.

David

[Maurice Donckers]

Hi David ,
there should be a restriction in the T that comes out of the block , and distributes the oil to the filter , and oil pressure gauge , I don`t have the original , and was wondering what the size would be , my 11 cab chev has no filter , so nothing to compare with.

[motto]

Maurice, is your filter a Military Senior? If so this should be stamped around the flat section of the lid.
I will look at a couple of spare engines tomorrow and see what they have installed on them, if anything.

David

[Maurice Donckers]

The filter is a military junior , like on a jeep , and is fitted in the chassis rail.

[Phil Waterman]

Hi Maurice

Knew I had one of those fittings tagged and put aside for future reference. The orifice is 1/16 of inch diameter.

2011 Dec 10 HuUP 008.jpg

HUP RESTRICTION OIL FITING.jpg

Made up replacement by filling with solder and then drilling out the passages to the correct size, sorry no photo of the replacement. Needed a pipe tap to clean out the threads.

Photos show the one that came form my 1945 HUP which was pretty much original. Photos taken during overhaul a couple of years ago.

I replaced it as a matter of practice because I had one break off, another engine, on the test stand and it will empty the crankcase in a hurry. I was standing at the control panel when the fitting broke off at the block and oil started hitting the wall 5 feet away. Killed the engine quick, what a mess to clean up.

Cheers Phil