quote:
Originally posted by XS650:
Turbo, according to Filterguy the filter is only spced to withstand a 70 psi differential pressure.
If the car had a high volume pump and the engine got reved high while cold with the 20W-50 in it, maybe the diffrenetial pressure in the filter exceeded 70 psi. That's within the pressure capability of a properly functioning pump. The lack of a functioning oil filter bypass valve is most likely what did the engine in.
The could have been other contributing cause, but with a functioning bypass, the filter never would have seen the delta p that it did.
No..I never said that.
The service report stated that the filter was subject to pressure in excess of 70 PSID.
The service report never claimed what the E-core tests to as far as collapse.
The E-core product bulletin states that the E-core has a higher collapse than standard metal cores.
As the E-core collapsed--so would any of the other GM application filter elements without a by-pass and standard metal core.
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Red Bowtie..
If there was no contaminant in the oil that could have lodged in the oil pump regulating valve...then what caused the excess differential pressure which collapsed the filter?
I surmized it was metal from your engine already having a problem--never claimed proof positive it was. If you say it couldn't have been--fair enough.
But still-- imho--something caused the excess pressure. Others have inquired along the same lines.
No one has come up with a satisfactory answer. Other than the oil pump pressure regulating/relief valve being stuck in the closed postion. All I am attempting to do is determine what could have lodged there.
AC--old metal core design or new E-core--would have encountered the same flow/pressure. The filter is but a dumb stupid animal hanging on the motor. It does nothing except filter the oil that the oil pump sends its way.
The filter does not regulate flow. A filter has about a 1-2 PSID pressure drop when new. AC, Wix, E-core--all of them. ( and from the picture evidence of the filter looking down the center tube, the media wasn't full of contaminant and plugged)
My replies in this thread would be the same regardless of which brand of filter used. So it's not about E-core. Or AC as it was under their label and they also have tested the filter.
I have yet to see any other explaination as to what caused the excess differential pressure.
As you seem to think the filter is the culprit..can you explain how?