BrendanC
$100 site donor 2024
the plastic inner core that backs up the filter media. i believe it to be a superior design to metal core with holes/louvers. no more double checking if louvers are open.What is E core? Sorry for my lack of education
New updated Fram Endurance FE7317 C&P
- Thread starter mt23
- Start date
What is E core? Sorry for my lack of education
The Ecore nylon center tube was kicked-off by Champ Labs I believe. Some early days issues was the size of the windows were too large, and if the media pleats were not tightly spaced the media could fold over and get blow through the center tube. That issue is pretty much non-existent today because of the lessons learned the hard way by the people designing center tubes.
As noted multiple times, the bypass valves themselves have never been the issue. It's always been the Champ Labs metal bypass piece seal to metal endcap seal area that shows the leakage. With the exception of those with OG polyester end caps all Champ use that design. And, recently a CL made virgin Super Tech ST3614 ecore c&p using polyester caps has shown leakage too.
Almost-it doesn’t have the depth of synthetic media that the original pink media Ultra had, & the jury is still out on the can thickness/rust resistance of the Endurance (the Ultra/FPS & Titanium cans are thin & prone to rust). They are about as good as you can get for passenger car applications, though.
The OG Ultra always had metal end caps with a fiber seal on the leaf spring end, which indicates that pre-First Brands Fram knew leaf spring sealing could be an issue. Not sure the lower end Champs & PH Frams are really polyester, they seem more like a fiber/felt material. I’ve always been a fan of the older Ultras, but the rust issue has always been an issue, especially if the Sure Grip flakes off.
We’ll need more c&p’s to know if the leaf spring is leaking at the end caps.
IDK what FB knew, but I give credit to 'Fram' for using the gasket material on the OG XG seal area as well as the two ply full synthetic wire backed media. Clearly when they made the new FE, they didn't adopt the OG XG "Fram made" design, but chose current Champ Labs metal to metal. As for polyester caps on OG ecores, in the past that's the term Champ Labs used for them*. Afaik, material hasn't changed. In any case, not metal and one anecdote posted also showed leakage. Also only used lower/lowest tier CL filters use now. Flaking or not, no fan of cap wrench unfriendly 'Sure Grip'.
Edit: Linked is the source where I've seen the term Polyester used for OG ecore endcaps.
https://gmserviceinsights.com/new-acdelco-oil-filters-deliver-enhanced-performance/
Last edited:
- Joined
- Mar 10, 2023
- Messages
- 184
The E core of the plastic center tube of the filter. In some filters you have a metal tube with louvers cut into them but in E-core designs the center tube is plastic with square “windows” to allow the flow of oil while preventing the filter media from collapsingWhat is E core? Sorry for my lack of education
Champs parts. Nylon inner cylinder is GREAT for oil flow as long as it’s durable. It’s the same inner cylinder as in the Walmart Supertech filters. No concern about support given the filter medium has a mesh backing and from a functional perspective is better than worrying about poorly formed louvres. The plastic is a definite IMPROVEMENT in my perspective. Thanks for posting!
Last edited:
- Joined
- Sep 1, 2024
- Messages
- 728
The plastic or nylon cage is nice, clean, but on the PH4967 I cut open, the media was about 5/16 in deep. I suppose oil doesn’t care. Never have seen such shallow pleats. Toyota 90915-YZZN1 pleats added to compare. But the Fram media showed few to no light spots, and the Toyota had “quite a few”.
We have a steel can installed in an engine coated in oil in service. Outside protected by paint. It’s not going to rust while in service coated in oil. The problem is not necessarily manufacturing. The filters have been sitting in some humid storage environment before it was sold. The manufacturer can either change its supply chain or it can use a more corrosion resistant steel.
Fram doesn’t have the best track record with rust…we’ve had several rust throughs posted here.
Places where they salt and treat the roads with other corrosive materials does a number on vehicles. The whole underside of cars can be rusted like that filter.
