Cool Collar

[JBO]

...installed a cool collar - now running too cool - may need to add an oil heater to burn off contaminents....seriously, can't tell a difference, but for the cost, which included a new filter, if it helps at all its worth it.

[JMar]

Hey I have a bridge for sale.

[GettinHeadStuds]

Lol.

S-E-A-R-C-H---B-U-T-T-O-N

[niner11]

For total performance you should have an eram installed before using the cool collar

[sammyg2]

Split-fire plugs and slick 50 are also worthwhile upgrades, K&N filters are only productive if you use then in conjunction with a tornado air flow improver
Wow, how many dyno runs would all that take, at least 100?

[Wayne 962]

Wow, I guess you guys believe that the world is still flat too. Search the archives. Many, many customers report a drop in their oil temps when using the cool collar. Don't ask me - ask them...

Still, people will dismiss the facts despite overwhelming evidence...

-Wayne

[Zeke]

Be EVIL, get a cool collar.

[sammyg2]

Just did a search, went back three years.
The score is:
People who have actually bought one and said it made a difference, 3

People who have bought one and said it didn't make any difference that they could tell, 3.

People who haven't tried one but say it can't work and it is snake oil, about a hundred.

People who said they were going to buy one and test if if Wayne offered a money back guaranty, 1. Never heard his results tho.

People who say it does work and we should do a search, one

No offense intended, but I'm missing the overwhelming evidence. The only thing that points to it being effective is the test that was performed, but IMO it smells of marketing instead of R&D so I really can't put any stock into it. The test claimed a 12 degree drop, but later in a different Post Wayne said it dropped oil temps 5 degrees. Is 5 degrees enough to notice? Is it enough to make any real world difference? What if it only drops the temperature 3 degrees?

All the other products mentioned above have the same type of conclusive tests on the info-mercials, I don't believe them either.

Having surface area in contact with the hot oil and also in contact with cooler air, it has to conduct heat, that is not in dispute. What I and most others who have expressed an opinion think is that the amount of heat dissipated from the oil by the cool collar is insignificant (much less than the 12 degrees claimed) and spending $30 on one is a waste of money.

I believe the e-ram increases horsepower too. Not enough to feel or show up on a dyno or to justify spending a penny on, but there probably is some increase.

If I see conclusive evidence that I can believe that the cool collar makes a significant difference, I will change my tune. If it is out there please point me in the right direction.

BTW I met a man at Irwindale speedway several years back that claimed he was the co-inventor of the cool collar and that it was going to be big, real big.
I don't know if he was telling me the truth but he did not make a positive first impression on me at all. He struck me in a way that made me feel as if I needed to check and see if I still had my watch and wallet.
Maybe I haven't gotten over that.

[niner11]

I swear that every time I see something about the cool collar I have to look. Nothing new is ever said but the controversy in these threads is more entertaining than "check out my painted fuchs".

I'll try not to hit the brakes next time I see a car wreck--I mean thread like this one.

[pwd72s]

Originally posted by Wayne at Pelican Parts


Still, people will dismiss the facts despite overwhelming evidence...

-Wayne

One visit to the off topic board will convince you of the truth in the above statement. The cool collar itself? The highest I've ever seen my oil temp go is 225, and that only twice...once in 1976, crossing the Bonneville salt flats in July, again in 2001, headed through the California Central Valley during a May heat wave. Over 100 degrees f. ambient air temps in both cases, tho I'll admit that Utah's dry heat was better on my personal comfort level scale. But hell, my car has aged better than I, so not a valid test. Bottom line? Just never felt the need to try a cool collar. The factory "S" lines & fender mounted radiator oil cooler have functioned well enough for my road driving, with a bit of time trial & autocross track stuff. But then, the early 911S was designed to be driven in a frisky manner. I'm not so sure about cars later in the evolutionary chain.

[fred cook]

Actually, the cool collar is not a bad idea, it just was never finished. What it needs is a small 12v. fan attached at the end blowing air thru an outer shroud and vented outside the engine compartment. That way, lots more heat would be removed from the oil/filter and the engine would not have to suck up the extra btus. With forced air moving over the cooling fins, the temperature delta or differential would be greater and therefore the flow of heat would be greater. The only remaining question is would be does the energy required to generate the extra current used by the fan creating more heat than it is removing? Anyone feel motivated to experiment? One word of caution, don't get it too efficient or you could freeze the engine compartment!

Fred Cook
'80 911SC coupe

"It's never too late to have a happy childhood!"

[pwd72s]

I agree with Fred...could work. Perhaps as much as 4-5 degrees. IF you owned a car that had it's filter hanging down in the natural air flow. Think domestic iron...

[Randy Webb]

Ok, people - here is how to find out:

Get a curved heat flux plate and insert it between the cruel collar and the filter. These are sufficiently thin that they will not alter the heat transfer themselves. YOu can then measure directly how much heat is flowing. You would want to compare that with the total amount of heat lost from the engine (hint: you can estimate this as 3x the hp -- but not the max. hp, the amt. you are using).

This will give you a quantitative answer. For a semi-quantitative answer, I can give you that directly: it will be somewhere between not much and nil.

[Wayne 962]

Well, a brief search of the archives revealed someone who did test it, who did not have a "monetary" influence:

http://forums.pelicanparts.com/showthread.php?threadid=72664&perpage=20&highlight=cool%20collar&pagenumber=2

And Bob Tindel also tested it too, but of course you won't believe him, because I paid him $1 million to skew his opinion:

http://forums.pelicanparts.com/showthread.php?threadid=72664&perpage=20&highlight=cool%20collar&pagenumber=2

The people who claim that the cool collar does nothing without testing it are basically saying that I don't know what I'm talking about. With two degrees from MIT, and a few (peer-reviewed) books under my belt, I would like to think I have at least some credibility.

-Wayne

[Zeke]

Originally posted by fred cook
.....and the engine would not have to suck up the extra btus.

I was waiting for that. The damn thing is in the wrong place on a 911, simple as that. Hang one on my Chevy PU where the oil filter is down in the air flow (sorta), and it might make a couple of degrees difference.

Somehow, in ideal conditions, with ideal placement, 12* cooler was obtained. As with any device, YMMV.

There is no reason not to have one except your wanting to be prudent with your money. It won't hurt anything or anyone. What's the big deal?

I think they are funny as hell. And if Tyson removes it, I want it. (I didn't know they were $30). And I can think of a few other things we do that are pretty silly. Like, what kind of pattern should I use to cut holes in my CIS cover box? How long should my sport muffler pipes be? A famous soup can. On and on.

[sammyg2]

LOL I wondered if my post was going to get the "education" reply.
I could post my resume, but why bother. I said what I believe based on my education and experience, it's your forum, time to let it go. I meant no disrespect but obviously you sensed some.
Plus I've never been published

BTW I own both of your books. The reason I bought them was because they are a very well organized version of all the knowledge and experience and expertise of the pelican posters.
All the people who come here and share information on how to perform maintenance and upgrades on these great cars. It would be very hard to top the knowledge base of this board. I thank you for providing us this forum to gather with experts and learn about these cars from people who have BTDT. Taking all that expertise and putting it in book form was logical, but also brilliant.
I thank you for that too.

This isn't going to get me banned, is it?

[Zeke]

Originally posted by Wayne at Pelican Parts
......and a few (peer-reviewed) books under my belt, ....-Wayne

You ate your books? Well, I guess that's one way to digest knowledge.

Hmmm.. let's not start a # of degrees shoot out, eh? ...... see your 2 and raise ya 3 more).

Ouch. That's gotta hurt.

[Randy Webb]

Hmmm.. let's not start a # of degrees shoot out, eh? Or at least let' make it worthwhile if we do (pint of good beer... see your 2 and raise ya 3 more).

Anyway, I 'm sorry, Wayne, if you are miffed. My (expert) opinion is as stated above, plus the tests have some problems. The reason it doesn't work better is the lack of srface area (tho as Milt mentions, more air flow would help). Certainly it will help somewhat and is only $30. Nobody said you should drop it from the catalog.

Originally posted by Zeke
Be EVIL, get a cool collar.

Weren't we talking about starting a Cool Collar Club in another thread? Be different. Sometimes you just gotta say"WTF".

[Wayne 962]

I think I'll just sail my boat off the edge of the Earth...

-Wayne