The Ford Barn

craig · 10-04-2021, 11:39 AM

Regarding oil filters, Y blocks had a full flow system, just like today's engines. The oil came from the pump into the filter and then on to the bearings.

The older "optional" filter systems were used on various engines, such as a flathead Mopars, flathead Fords and 216-235 as well as the first 265 Chevrolets. This system basically pumped oil into the filter from an available pressure port and returned it directly to the oil pan. Better than nothing, but in all reality it just dropped the oil pressure. In that time period the oil was terrible as compared to todays oil and the engines had very poor crankcase ventilation. If I were to have been buying a new car back then, I probably would have opted out of the filter and just changed oil more often and tried to stay away from paraffin based oils

10-04-2021, 11:39 AM	#17
craig Senior Member Join Date: May 2010 Location: The Inland Empire of Washington State Posts: 381	Re: rocker arm oiling problems on Y block Regarding oil filters, Y blocks had a full flow system, just like today's engines. The oil came from the pump into the filter and then on to the bearings. The older "optional" filter systems were used on various engines, such as a flathead Mopars, flathead Fords and 216-235 as well as the first 265 Chevrolets. This system basically pumped oil into the filter from an available pressure port and returned it directly to the oil pan. Better than nothing, but in all reality it just dropped the oil pressure. In that time period the oil was terrible as compared to todays oil and the engines had very poor crankcase ventilation. If I were to have been buying a new car back then, I probably would have opted out of the filter and just changed oil more often and tried to stay away from paraffin based oils