rocker arm oiling problems on Y block

[JimNNN]

Originally Posted by Crankster

The shop manual says 35-55 psi HOT at 2000 RPM

To verify that, I'd say that pretty much approximates my '54 Y block's pressure readings. At a 500+ rpm idle (hot) the needle is about halfway between 0 and 25 psi...so maybe 12 or 13? At a higher idle (closer to 700) it's more like 18. Using 15w40 oil.



I'm still amazed by the claims that toilet paper filters work decent, though I don't doubt it's true. TP is so easily deteriorated in water so it's weird that oil and oil pressure don't flood the system with lots of fibrous paper particles. I wonder if the high quality premium paper on today's market would be better or worse for an engine than the TP of the 1950's?