Originally Posted By: ZeeOSix
Originally Posted By: 3800Series
Not a scientist or even engineer but I would imagine running a smaller/larger can would effect flow rate and possibly raise oil pressure going to the can and lower pressure coming for the can. But that's just from thought to evidice (of my own).
Only if the positive displacement oil pump is in pressure relief mode.
As others have said, the oil inlet holes in the base, and also the holes in the center tube don't add much delta-p. The media is what causes the most pressure drop across an oil filter.
Here's the flow vs delta-p curve for a medium sized PureOne. The delta-p in this curve is across the whole oil filter, which includes the inlet holes in the base and the holes in the center tube.
PureOne Flow vs Delta-P
I did see that thread before snapping those pictures at Walmart, but I don't believe the chart shown a bit. Here is why,
As we know, oil filters have by-pass valves which are set to anywhere from 13psi to 21psi or so. It means that once that pressure is reached little additional pressure can build up. Therefore, the lines on the graph should shoot nearly straight up in that psi range, depending on the filter, i.e. increase in flow with almost no increase in pressure. At the very least there must be a kink in each line at the point where by-pass valve pressure is reached. Nevertheless, graph shows perfectly smooth continuous lines all the way past 45psi. Unless I am really missing something that just doesn't make any sense. And if that's one thing wrong with the graph nothing else can be trusted.
Furthermore, filter parameters vary from model to model. Somewhere I saw an analysis of inflow/outflow areas for a chevy truck filter and inflow area was smaller in Fram compared to Bosch, which is completely opposite to what we had found earlier on this thread for Fram TG6607 vs Bosch 3300.
Originally Posted By: 3800Series
Not a scientist or even engineer but I would imagine running a smaller/larger can would effect flow rate and possibly raise oil pressure going to the can and lower pressure coming for the can. But that's just from thought to evidice (of my own).
Only if the positive displacement oil pump is in pressure relief mode.
As others have said, the oil inlet holes in the base, and also the holes in the center tube don't add much delta-p. The media is what causes the most pressure drop across an oil filter.
Here's the flow vs delta-p curve for a medium sized PureOne. The delta-p in this curve is across the whole oil filter, which includes the inlet holes in the base and the holes in the center tube.
PureOne Flow vs Delta-P
I did see that thread before snapping those pictures at Walmart, but I don't believe the chart shown a bit. Here is why,
As we know, oil filters have by-pass valves which are set to anywhere from 13psi to 21psi or so. It means that once that pressure is reached little additional pressure can build up. Therefore, the lines on the graph should shoot nearly straight up in that psi range, depending on the filter, i.e. increase in flow with almost no increase in pressure. At the very least there must be a kink in each line at the point where by-pass valve pressure is reached. Nevertheless, graph shows perfectly smooth continuous lines all the way past 45psi. Unless I am really missing something that just doesn't make any sense. And if that's one thing wrong with the graph nothing else can be trusted.
Furthermore, filter parameters vary from model to model. Somewhere I saw an analysis of inflow/outflow areas for a chevy truck filter and inflow area was smaller in Fram compared to Bosch, which is completely opposite to what we had found earlier on this thread for Fram TG6607 vs Bosch 3300.
