Anyone Know If The Attached Is Decorative Or Functional?

[coollx]

If I did this right, I've attached two pictures of a finned metal cover that was clamped around the oil filter of my 911.

Since I'm just starting to become familiar with these cars I'm wondering whether this cover is for decoration (ie-people putting chrome valve covers and air cleaners on their engines) or does it serve some functional purpose like help cool the oil flowing through the oil filter due to its finned design?

If it was for aesthetics, I'm going to ditch it when I do my first oil change.

Dom

[pkracer21j]

supposedly functional...It is supposed to dissapate heat from the oil filter housing.

[Porsche virgin]

It is a cool collar. Tons of info (mostly mocking it) on this site.

[equality72521]

It may or may not do anything but since you have it and it was free go ahead and use it. It certainly can't hurt.

[Zef]

Both of them...decorative and functional.

[avendlerdp]

Lol

[Andras Nagy]

Hi Cool,

Since the oil filter is located inside the closed engine bay, and since the temperature of the inside of the engine bay is about 150 degrees, and the oil that is circulating is about 180 degrees, the delta t of that is only 30 degrees.

Since ambient outside air never exceeds about 100 degrees, if you were to have an auxiliary oil cooler with outside air passing through it, you would have a much better cooling effect than that little device that has no air moving over it. In fact, you would in fact be adding to the temperature rise of the engine compartment due to the fins of that collar (more so than if you just had the oil filter radiating heat into the comparment).

Therefore, I doubt it does very much for lowering the temperature of the oil.

The immutable laws (mostly) of physics says it's not worth purchasing, but if you got it for free, Equality is right, you can't hurt anything by using it.

However, be aware that you have to keep removing and replacing it every time you change your oil filter. Is that bother worth no change to your oil temperature?

[Won]

Originally Posted by Andras Nagy

Hi Cool,

Since the oil filter is located inside the closed engine bay, and since the temperature of the inside of the engine bay is about 150 degrees, and the oil that is circulating is about 180 degrees, the delta t of that is only 30 degrees.

Since ambient outside air never exceeds about 100 degrees, if you were to have an auxiliary oil cooler with outside air passing through it, you would have a much better cooling effect than that little device that has no air moving over it. In fact, you would in fact be adding to the temperature rise of the engine compartment due to the fins of that collar (more so than if you just had the oil filter radiating heat into the comparment).

Therefore, I doubt it does very much for lowering the temperature of the oil.

The immutable laws (mostly) of physics says it's not worth purchasing, but if you got it for free, Equality is right, you can't hurt anything by using it.

However, be aware that you have to keep removing and replacing it every time you change your oil filter. Is that bother worth no change to your oil temperature?

The air temperature inside the engine bay is not much higher than ambient temperature when the car's moving - numbers obtained with a temperature probe are documented in the Pelican archives.

[RWebb]

True - it is still not very effective. But like the man said, it was free.

Why not put in on eBay for $95 and see what happens....

[joecrum]

Sure it's useful. It gives you something to grip when you take off your filter. No more filter wrench or poking a screwdriver through it!

[Andras Nagy]

Hey Joe,

Why not just use the $5 filter end cap sold in Pep Boys? But you're right, he could save even that $5, and use the collar to remove.

Net cost - $0.-

[dshepp806]

Get rid of it.....

Best,

[old man neri]

Anyone ever stick one of those around a beer can to see if the beer gets cold quicker in the fridge?

[vash]

wrap it around a potato, and see if it bakes up faster.

[coollx]

Gee guys, if I had any idea this filter cover was real and so controversial, I would have done a search like I usually try to do rather than start another debate.

I must confess, all things considered, its probably not something I'd go out and buy, but since I have it, I guess I'll keep it and use it.

Thanks

Dom

[tcar]

It may be a little more effective on a car where the oil filter is on the bottom on the engine and is out in the airstream.

On a 911? Nah.

They're pretty much a joke here.

[the]

Even assuming that thing could suck up a ton of heat from the oil and then throw it out, on a 911, where would that heat go?!?

[RWebb]

Anyone interested can calculate the heat transfer from this device using the information in Kreith's Heat Transfer text.

Answers will be due next Monday.

[Formerly Steve Wilkinson]

It worked just fine on my airplane, so quit raggin' it, you know-nothings...

[ChrisBennet]

Originally Posted by RWebb

Anyone interested can calculate the heat transfer from this device using the information in Kreith's Heat Transfer text.

Answers will be due next Monday.

You forgot: "Show your work."
-Chris