Fram Ultra C&P XG9688
- Thread starter JWC86
- Start date
Wonky base gasket and tiny louvers?
Louvers look fine. What’s wrong with base plate gasket?
As expected. I’ve maintained all these including Endurance and Titanium etc will have a “light” gap there.Date code is 10th day of 2025. Warped and ruffled leaf spring really "shines".
It “really shines” because it’s being reflected and projected off a shinny metal surface that FLARES UP and OUTWARD at the edge (see photo close up). This tends to exaggerate and magnify the intensity and even the size of light patch. I’m not disputing the existence of a gap space, but this flashlight test it highly subjective.
Only sophisticated tests measuring actual FLOW of oil through said gap are going to quantify a leak there.
Note edge shape flaring up and out.
This is a case of DIFFUSE REFLECTED LIGHT and exaggerates the size.
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Thanks for performing this and sacrificing a new one.
I agree 100%. It was actually a really good fit and I didn’t think any light would come through but yet it had the appearance of lots of light coming through.
Like you said, the only real way to test for this would be some kind of contrapment that pressurizes the “seal”
It really shines because that gap is pretty large. A much smaller gap isn't going to show as much "shine". The flashlight test is an added enhancement to a plain visual inspection without light.
How much money do you have laying around to have a very sophisticated leakage flow test done? Send me a couple $K and I'll come up with one, lol. Or I can just do the calculation and be close enough to see that a big ol' leak gap can leak as much as 15% of the flow around the media.
If that gap was much smaller the appearance of light would be much smaller. Put on some polarized sunglasses, lol.
The leaf spring was a really good fit in the end cap because the "nubs" on the ID of the end cap hole makes it an interference fit. So the leaf spring needs to sit all the way down and seal on that thin raised ring on the end cap. If the leaf spring is warped and/or has lots of ruffles there simply will not be a good metal-to-metal "seal" . That's why there's a leak gap and why light shows up so prominently. Also possible that the interference fit with the nubs is too tight and won't allow the leaf spring to sit all the way down in the end cap. If that's happening too, its another separate quality issue, and makes the leak gap even worse.
Nubs.
... and there is zero sealing going on between the ID of the end cap and leaf spring because the nubs leave a big air gap in that area. The only sealing interface is the leaf spring to that thin raised ring around the end cap hole. Only way it will "seal" is to have perfectly flat and smooth surfaces.
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Thank You sir. The OG days are gone forever. Why I have tons of them left for the fleet.
Nice cut and post sir. It’s appreciated
You probably have OG's old enough to has smooth leaf springs along with the fiber sealing ring on the end cap ... and no louvers. Yes?
Yes sir indeeed. Few more “extra guard” found at sales, thrift shop in Meadville PA. And few more wire backed Titanium’s for fleet also.
The wire backed XG-8A’s donated to Chris142
More unassociated leak gap advocate justification analogies.
Who’s advocating leaks?? No doubt it leaks.
Flashlight “Test” is grossly inaccurate and exaggerated.. by its very nature.
Flashlight “Test” is grossly inaccurate and exaggerated.. by its very nature.
How else are people going to evaluate it without spending a ton of money to come up with some sophisticate test program. You seem to constantly try to downplay the obvious leak gap issue. A good calculation as done on the Endurance with the big leak gap tells me all I need to know.
