How do Toyota/Honda Filters Seal without End-Caps?

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It looks like many Toyota and Honda oil filters don't have any sort of end-cap for the filter media. How does this work? It seems that oil would bypass around the media without an end-cap? The cartridge filters for Tundras are the same way.



 
Looks like a filter that will only bypass if the media gets clogged. Maybe I'm not seeing what you are.
 
Each pleat end is glued shut. Both ends of the center tube circumference are sealed just like on any other oil filter.
 
Are you serious?
crazy2.gif


Maybe I don't understand your question?
 
The very end of each pleat just *LOOKS* like it is open...

- but in reality, they are glued inside at the very end.
 
What's great is that the pleats can't fold over and tear with this design AND they know how to make tight even pleating. Amazing right?!I love it!

See above for your answer; ends are glued. Only way for oil to pass is through the center tube since there's a nice top and bottom seal with the well designed center tube which seals perfectly to the ADBV and the bypass valve spring.

Great design IMO.
 
Thanks for the comments guys. I was thinking the pleats would have to be glued shut in order for it to not bypass over the top and bottom but couldn’t see the glue. Thanks for clearing that up!

I still prefer this style “end-cap” though (hard solid resin), seems more solid:

61SVvV6U9rL._SL1000_.jpg
 
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Originally Posted By: webfors
What's great is that the pleats can't fold over and tear with this design AND they know how to make tight even pleating. Amazing right?!I love it!

See above for your answer; ends are glued. Only way for oil to pass is through the center tube since there's a nice top and bottom seal with the well designed center tube which seals perfectly ...

Great design IMO.
I agree, mostly. It's probably less expensive to manufacture, besides. Very clever.

There's usually no center tube in the cartridge version, only one in the cap, and it doesn't seal directly to anything (or need to). Overall sealing against oil bypassing around the ends is more reliable than with typical rigid-end-cap cartridge designs, in my opinion.

I've seen cartridges of superficially similar design of another brand in which the sealing glue in the ends of the pleats seems to be missing. I'm not sure whether it's present but hidden, or they have a serious quality problem, or they've proven oil won't actually bypass through those gaps between pleats.
 
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Originally Posted By: 1JZ_E46
Thanks for the comments guys. I was thinking the pleats would have to be glued shut in order for it to not bypass over the top and bottom but couldn’t see the glue. Thanks for clearing that up!

I still prefer this style “end-cap” though (hard solid resin), seems more solid:

61SVvV6U9rL._SL1000_.jpg


It's paper and resin.

Maybe you're thinking Hengst style, which Fram also uses.
w01331779657hen.jpg
 
Originally Posted By: UG_Passat
It's paper and resin.

Maybe you're thinking Hengst style, which Fram also uses.
w01331779657hen.jpg



No. The Mann filter I posted was what I was thinking of. My wife's Mini uses this style of filter and they always go in and come out looking great. I like how it effectively creates a "cap" with the resin used to bind the pleats to the top. No need for a separate component. Pretty clever I'd say.
 
Originally Posted By: UG_Passat
... Maybe you're thinking Hengst style, which Fram also uses. ...
... except that Fram (at least the ones I've seen in XX10358 size) does not add the sealing ring of softer material near the center of the ends, just the same rigid plastic as the rest of the end cap.
 
Originally Posted By: CR94
... except that Fram (at least the ones I've seen in XX10358 size) does not add the sealing ring of softer material near the center of the ends, just the same rigid plastic as the rest of the end cap.


Yep I noticed that. Not ideal. IMO, Mann makes the best filter out there. Too bad they don't make an oil filter for a family member's brand new Tundra.
 
Looking in a Toyota filter you won't see any glue, just an almost invisible line where the center tube fits, without glue, onto the bypass valve. The removable center tube sticks out on the other adbv side and seals the adbv to the baseplate. A superior design to any of the German ones shown here IMO. The pleat seals on the pleat end are also tight, even better than the Hamp and those shown without end caps. Plus the flow is less restricted, no end cap thin gap for oil flow. The oil goes directly into the pleats.
Plus notice how small in diameter the center tube is on the Toyota filter, this is a large D3, making the pleats very deep.
 
Originally Posted By: goodtimes
Looking in a Toyota filter you won't see any glue, just an almost invisible line where the center tube fits, without glue, onto the bypass valve. The removable center tube sticks out on the other adbv side and seals the adbv to the baseplate. A superior design to any of the German ones shown here IMO. The pleat seals on the pleat end are also tight, even better than the Hamp and those shown without end caps. Plus the flow is less restricted, no end cap thin gap for oil flow. The oil goes directly into the pleats.
Plus notice how small in diameter the center tube is on the Toyota filter, this is a large D3, making the pleats very deep.
That is a fine looking filter eh goodtimes? Why would the largest manufacturer of automobiles risk engine failures due to oil filter/lubrication problems? There is absolutely nothing wrong with that oil filter design. Been using them for years and in eight months and twenty five days I can mention the manufacturer of that fine oil filter. YZZD1 for me.
 
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I thought Goodtimes was advocating FOR Toyota’s design? Not against. Regardless, I still like the Mann design, as it keeps the pleats evenly spaced and looks more robust.
 
Originally Posted By: CR94
... except that Fram (at least the ones I've seen in XX10358 size) does not add the sealing ring of softer material near the center of the ends, just the same rigid plastic as the rest of the end cap.


This is one reason I recently went back to OE filters. OE fits the housing much better and the glue is pliable enough to ensure a complete seal.
 
Originally Posted By: 1JZ_E46
Originally Posted By: UG_Passat
It's paper and resin.

Maybe you're thinking Hengst style, which Fram also uses.
w01331779657hen.jpg



No. The Mann filter I posted was what I was thinking of. My wife's Mini uses this style of filter and they always go in and come out looking great. I like how it effectively creates a "cap" with the resin used to bind the pleats to the top. No need for a separate component. Pretty clever I'd say.


the Mann you posted is not a resin-based endcap. It's still a paper endcap that is glued to the filter pleats. I've been through a lot of them, as well as the Mahle version, which was sold by Fram before they switched production to China with a Hengst style design
 
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Originally Posted By: CR94
Originally Posted By: UG_Passat
... Maybe you're thinking Hengst style, which Fram also uses. ...
... except that Fram (at least the ones I've seen in XX10358 size) does not add the sealing ring of softer material near the center of the ends, just the same rigid plastic as the rest of the end cap.


The Fram made-in-China cartridge I have used in my old 08 Passat has had a sealing ring on it

CH9911
625979.jpg
 
Originally Posted By: funflyer
Originally Posted By: CR94
... except that Fram (at least the ones I've seen in XX10358 size) does not add the sealing ring of softer material near the center of the ends, just the same rigid plastic as the rest of the end cap.
This is one reason I recently went back to OE filters. OE fits the housing much better and the glue is pliable enough to ensure a complete seal.
Right. One has to wonder whether Fram's supposedly more efficient media compensates for their iffy too-rigid sealing surfaces. I'm guessing it does, so I buy them anyway. They do seem to be reasonably flat and square; I've seen much worse in other brands. Still, a rigid flat surface against another rigid flat surface won't form a perfect seal, unless both are very accurately made.
 
Originally Posted By: UG_Passat
... The Fram made-in-China cartridge I have used in my old 08 Passat has had a sealing ring on it
That's interesting. As noted, I was referring to the xx10358 ones I've seen, including made-in-China Extra Guard and Tough Guard versions.
 
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