Baxter Performance oil filter adapter

[Maximus Gladius]

air can be trapped - compressed, but trapped, otherwise my pressure tank would never work

This sounds strangely familiar to my power steering pumps.

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[willys 41]

If you carefully remove the spin on filter off the baxter adapter and cut it open you'll find it only uses half the filter. Air is trapped in there so the oil never reaches all the media.

How an oil filter works.
Under high pressure the bypass will open and push any air that you think will be permanently trapped.

 

[willys 41]

What pressure does the oil filter bypass valve open at?

Typically, engine manufacturers design bypass valves to open at a pressure differential of approximately 10 to 30 psid with some as low as 4 psid (28 kPad), and others opening as high as 75 psid (500 kPad).

 

[Hootbro]

What pressure does the oil filter bypass valve open at?

Typically, engine manufacturers design bypass valves to open at a pressure differential of approximately 10 to 30 psid with some as low as 4 psid (28 kPad), and others opening as high as 75 psid (500 kPad).

Baxter recommends a WIX 57502 or equivalent oil filter. WiX specs the 57502 at 22 PSI rating for the bypass.

 

[ZeeJay]

This is solution in search of problem.
Cycle to live oil pressure value in dash and start it. Value moves immediately. Also the oil cooler, all the rifles, section of pump and pick up tube all drain back anyway when allowed to sit, that’s called gravity and all engines do this. That pump flat ass moves some oil, like now. Start any 4.0 and you can almost drink a cup of coffee before they hit pressure. And by the way those filter are 45 degree base up on Renix engines and 90 base out on HO and Powertechs, and if they sit long enough they drain off also.

 

[willys 41]

The filter I use on my Baxter is a Purolator and the relief valve starts to open at 15psi

 

[ShadowsPapa]

I think people are forgetting what a bypass valve is for and what it does. It will not open under normal conditions.
It opens when there's a pressure differential between the two sides of the filter material.
This prevents a clogged filter from preventing oil getting to the engine.
If the filter is dirty or the oil too thick, it opens, allowing oil to bypass the filter media to at least protect the engine.
So in other words - that bypass won't open unless there's a need for it to open. On a new clean filter and the right viscosity oil, it may never open.
It's a FILTER bypass.
It has zip to do with oil pressure.
This has been discussed ad nauseam on our other car forums (and tractor forums and so on)

 

[willys 41]

I think people are forgetting what a bypass valve is for and what it does. It will not open under normal conditions.
It opens when there's a pressure differential between the two sides of the filter material.
This prevents a clogged filter from preventing oil getting to the engine.
If the filter is dirty or the oil too thick, it opens, allowing oil to bypass the filter media to at least protect the engine.
So in other words - that bypass won't open unless there's a need for it to open. On a new clean filter and the right viscosity oil, it may never open.
It's a FILTER bypass.
It has zip to do with oil pressure.
This has been discussed ad nauseam on our other car forums (and tractor forums and so on)

At 70psi it will be open

 

[ZeeJay]

I think people are forgetting what a bypass valve is for and what it does. It will not open under normal conditions.
It opens when there's a pressure differential between the two sides of the filter material.
This prevents a clogged filter from preventing oil getting to the engine.
If the filter is dirty or the oil too thick, it opens, allowing oil to bypass the filter media to at least protect the engine.
So in other words - that bypass won't open unless there's a need for it to open. On a new clean filter and the right viscosity oil, it may never open.
It's a FILTER bypass.
It has zip to do with oil pressure.
This has been discussed ad nauseam on our other car forums (and tractor forums and so on)

Thank you!! ^^^^THIS!

 

[ShadowsPapa]

This is solution in search of problem.
Cycle to live oil pressure value in dash and start it. Value moves immediately. Also the oil cooler, all the rifles, section of pump and pick up tube all drain back anyway when allowed to sit, that’s called gravity. That pump flat ass moves some oil, like now. Start any 4.0 and you can almost drink a cup of coffee before they hit pressure. And by the way those filter are 45 degree base up on Renix engines and 90 base out on HO and Powertechs, and if they sit long enough they drain off also.

These start in high volume mode. You reach 70 psi almost instantly, then it cycles back to 30 psi.

The filter I use on my Baxter is a Purolator and the relief valve starts to open at 15psi

That's NOT oil pump pressure, that's differential between the two sides of the media.
It's a filter BYPASS - literally bypasses the filter media in event of a plugged or restricted filter.

Your filter's bypass had better not be opening when the engine is running, otherwise oil is not being filtered.
You can look this up.

If your filter's bypass opens, your filter is dirty or the oil thick.
The pressure at which the filter's BYPASS opens is the pressure difference between the two sides of the media. Doesn't matter a lick what the pump is putting out.

 

[ShadowsPapa]

At 70psi it will be open

Only if that media can't flow enough oil.
And it's not PRESSURE, it's VOLUME that matter then.
Pump pressure won't matter, the volume flowing through the media matters.
Go ahead, check out BITOG forums.
Even at 70 psi, if the flow isn't so high that the media can't handle it, it won't open the bypass.
There must be a pressure differential to overcome the spring of the BYPASS before it will open, regardless of pump pressure.
It's basic hydraulics.

 

[ZeeJay]

These start in high volume mode. You reach 70 psi almost instantly, then it cycles back to 30 psi.


That's NOT oil pump pressure, that's differential between the two sides of the media.
It's a filter BYPASS - literally bypasses the filter media in event of a plugged or restricted filter.

Your filter's bypass had better not be opening when the engine is running, otherwise oil is not being filtered.
You can look this up.

If your filter's bypass opens, your filter is dirty or the oil thick.
The pressure at which the filter's BYPASS opens is the pressure difference between the two sides of the media. Doesn't matter a lick what the pump is putting out.

Yeah I’ve watched the live value in dash before, and gets there crazy fast.

 

[willys 41]

These start in high volume mode. You reach 70 psi almost instantly, then it cycles back to 30 psi.


That's NOT oil pump pressure, that's differential between the two sides of the media.
It's a filter BYPASS - literally bypasses the filter media in event of a plugged or restricted filter.

Your filter's bypass had better not be opening when the engine is running, otherwise oil is not being filtered.
You can look this up.

If your filter's bypass opens, your filter is dirty or the oil thick.
The pressure at which the filter's BYPASS opens is the pressure difference between the two sides of the media. Doesn't matter a lick what the pump is putting out.

I understand what you are saying. Put the media can not pass that much oil at 70psi so the bypass will open.

 

[TheRealStreetcommander]

Wow, every so often someone curiously bumps these snake oil selective particle discriminator threads.

It never changes the fact that zero people on any Baxter thread can ever point to a single Pentastar failure mode related to lack of oiling at start-up.

I think that’s because Pentastar don’t suffer from that condition. Spending the money on earlier OCI’s, or better quality oil seems more prudent.

 

[ShadowsPapa]

Here's a good example from another forum on the topic -

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