chevrolet oil orifice

[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