Wix 57055 C&P "Disappointment"

[Urshurak776]

It's about the dP across the filter itself due the the flow rate and oil viscosity, regardless of the dP across all the other components of the oiling system. If there is too much dP across the media and center tube, then the bypass valve is closer to opening. If the louvers are really choked down, it's going to raise the dP across the bypass valve and make it open sooner an more often compared to open louvers that don't increase the dP.

Absolutely, I was just saying for a properly operating oil filter, isn't really an issue.

 

[cb4017]

Interesting. I have a Napa Gold 100351 (Mann+Hummel) on the shelf for my 23 Colorado ZR2 that I won't use because the louvers look pretty bad. I just now found out that Napa Gold filters are now supplied by PGI. May have to check one out.

 

[ZeeOSix]

Absolutely, I was just saying for a properly operating oil filter, isn't really an issue.

Yes, a decent oil filter will typically be around 1/15th as flow restrictive as the oiling system, and have around 4-6 PSI of dP with hot oil at around 8-10 GPM. But the filter bypass valve only reacts to what's going on with the dP across the media + center tube, regardless of what's happening in the rest of the oiling system. A badly choked down center tube, and/or badly loaded media will impact the bypass valve action.

 

[ZeeOSix]

I just now found out that Napa Gold filters are now supplied by PGI. May have to check one out.

With no more louvers.

 

[cb4017]

With no more louvers.

Exactly!

 

[daman]

They do if they are opened up well like they should be. If they looked even half choked down by looking down the center tube they get a reject from me. Solution - buy filters with holes in the center tube or an Ecore center tube.

Me too, so half are shut you get some flow through half a filter, no thanks, paper weight, you guys can have em