Home » Public Forums » GMCnet » How much oil will our filters flow (But wait...there's more)
| How much oil will our filters flow [message #281433] |
Sat, 04 July 2015 09:13  |
kerry pinkerton
Messages: 2565
Registered: July 2012
Location: Harvest, Al
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Woke up at 3:30 and got to thinking...I hate when that happens. Then I started looking for information.
Regarding this whole sudden infant engine death, oil cooler, oil filter bypass, high volume oil pump thing that we've been kicking around recently. Rob Muller has been saying for some time that if oil went to the cooler it HAD to come back to the filter. What finally clicked for me, and some others, was the realization that the oil filter bypass valve would open at about 6 PSI differential pressure and UNFILTERED OIL WOULD GO BACK TO THE ENGINE. Rob has designed a test scenario and Tom Pryor is going to execute it on a test stand motor.
HOWEVER, what got me thinking this morning is what kinds of things cause differential pressure. We know the oil cooler and lines have some restrictions and clearly the oil filter does also. What we don't know, at least what I was unable to find this morning, was any data that tells how much volume our standard oil pump puts out and how much various oil filters can flow. I did find that the basic Melling High Volume pump is 20% more than stock.
If we are under the suspicion that the bypass is open frequently, then a high volume oil pump will make this worse!!!! Guess what I put in last summer?
Plus, I suspect that there are oil filters and there are oil filters in terms of filtration and flow capability. I found this article about oil pumps
http://www.hotrod.com/how-to/engine/ccrp-0911-small-block-chevy-oil-pumps/
But the links to the results time out.
I also looked for specifications on my AC PF-24 filter for what it will flow but had no luck. I can call someone after the holiday.
So here are the questions rattling around in my head this morning:
1- What is the flow rate (volume) of the standard pump?
2- What is the rated flow rate of various filters?
If our filters can't handle the volume it's obviously going to increase the differential pressure and increase the time the bypass is open. High volume pumps will probably make this worse I think.
Kerry Pinkerton - North Alabama
Had 5 over the years. Currently have a '06 Fleetwood Discovery 39L
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