Here is the second Napa Silver from my ongoing experimentation to come off one of my vehicles. Another $2.54 bargain. This is a PF52 equivalent #31036 that was run on our old Chevy Lumina 3.1 for 3-4k miles, primarily with Rotella 10w30 although there was some various top offs thrown in.
Being a GM application this filter has no bypass. I thought this would be a boring dissection but it turned out to be interesting anyway. (What a nerd I've become ha ha!)
Here it is just after cutting. The can got scuffed pretty bad I didn't have my normal hacksaw blade it was slow going. This is the second Silver I've cut recently and this one was also under more compression that leaf spring filters I've opened. After cutting the plate wanted to sit about 3/8" above flush. Good Wix coil spring at work!
Here is the base plate, typical Wix again, I like the larger inlet holes they tend to use but it probably doesn't make any difference.
Here is a shot of the ADBV (nitrile) assembly. This caught me by surprise. It sits on a small metal piece that fits into the center tube. The piece is a dead ringer size wise for Wix's thread end bypass arrangement, however this one does nothing other than give the ADBV a place to sit securely. My guess would be Wix uses this arrangement so they can use this same media cartridge on different filters that take a thread end bypass (such as the #31516) or their combo valve. Clever way to save a few pennies.
Another look at it:
And another one, here it is top end up as it would sit against the base plate, the bottom into the center tube. You can see a lot of grit, I don't know if its from the cutting or the engine, the engine is NOT clean it suffered coolant contamination badly in it's past so who knows.
Here's a first look at the media cartridge, it has lots of pleats (51) and they were evenly spaced. The media measured at 3 3/4" inches. A comparable Fram with a leaf spring would measure 4".
The seam side. This can get a little ugly on Frams and Purolators, but not here! The seam was very strongly glued again.
Bottom of the media cartridge and spring. Both the bottom of the can and media endcap are shaped to encourage the spring to sit in the proper place, then the whole thing is under good compression as well.
Inside of base plate.
All laid out.
The more I use these Silvers the more I like them. I am big on value and the quality of build for the price is simply amazing to me. For those of you interested in a low cost alternative to Puro Classics, I'd suggest you give these bargains from Wix a look.
Being a GM application this filter has no bypass. I thought this would be a boring dissection but it turned out to be interesting anyway. (What a nerd I've become ha ha!)
Here it is just after cutting. The can got scuffed pretty bad I didn't have my normal hacksaw blade it was slow going. This is the second Silver I've cut recently and this one was also under more compression that leaf spring filters I've opened. After cutting the plate wanted to sit about 3/8" above flush. Good Wix coil spring at work!
Here is the base plate, typical Wix again, I like the larger inlet holes they tend to use but it probably doesn't make any difference.
Here is a shot of the ADBV (nitrile) assembly. This caught me by surprise. It sits on a small metal piece that fits into the center tube. The piece is a dead ringer size wise for Wix's thread end bypass arrangement, however this one does nothing other than give the ADBV a place to sit securely. My guess would be Wix uses this arrangement so they can use this same media cartridge on different filters that take a thread end bypass (such as the #31516) or their combo valve. Clever way to save a few pennies.
Another look at it:
And another one, here it is top end up as it would sit against the base plate, the bottom into the center tube. You can see a lot of grit, I don't know if its from the cutting or the engine, the engine is NOT clean it suffered coolant contamination badly in it's past so who knows.
Here's a first look at the media cartridge, it has lots of pleats (51) and they were evenly spaced. The media measured at 3 3/4" inches. A comparable Fram with a leaf spring would measure 4".
The seam side. This can get a little ugly on Frams and Purolators, but not here! The seam was very strongly glued again.
Bottom of the media cartridge and spring. Both the bottom of the can and media endcap are shaped to encourage the spring to sit in the proper place, then the whole thing is under good compression as well.
Inside of base plate.
All laid out.
The more I use these Silvers the more I like them. I am big on value and the quality of build for the price is simply amazing to me. For those of you interested in a low cost alternative to Puro Classics, I'd suggest you give these bargains from Wix a look.
