Time to Put the Old Cooler Collar On Again

[Sunroof]

Just to pass on to the cooler collar crowd.

Driving around in Atlanta this past winter provided for low engine (oil) temperature on my daily work commute. I never got over 160-180. Interestingly, I took off the Cooler Collar and noted a very slight change in engine (oil) temperature so something was certainly going on. Toes sure warmed up faster!

Well as temps warm up here down south and the engine oil gets up to temperature faster the collar goes back on again to do it's thing through the summer. My external thermostat is blocked so I opted to try the heat sheets and collar together and never got over 225 last summer, even with the AC running. It's either the 2.4 is not known for high heat generation or the use of heat sheet reflectors and finned cooler is the right combination.

Regard,
Bob
73.5 T

[Chuck Moreland]

If you are seriously thinking about relocating the oil filter then you should look very closely at the flow capacity of the adapters and tubing. A generic JC Whitney special isn't going to cut it for our 911s.

Your oil lines and fittings external to the engine are 19mm ID. That's friggin huge by auto standards! Your 911 moves lots of oil volume and its entire system is designed to accomodate that.

Strap a puny JC Whitney filter relocation thingy in there and you are ffing with your car's blood supply!

Same flow problem applies to those cheap oil coolers. Your car's oil system is no place to save pennies.

[JMPRO]

I am with Chuck on this one . The cool collar does what it was designed to do without relocating it . The engine compartment has a lot of air moving thru it to remove heet from the cool collar . The cool collar serves as an inexpensive aid to supplenental cooling just as ,HEET SHEETS, COMPACT COOLERS, COOLER SCOOPS and ELEPHANT OIL LINES. If you want to or feel you need to spend the big bucks for the maxed out racing coolers then do it . If though ,you just need a little extra cooling capacity for those weekend runs to Las Vegas or the like , than any or all of the products listed above could be the answer.
Jerry

[Targa Dude]

Hey Sunroof...Bob,

I recently installed a Cool Collar and found it to be semi effective.
If you read posted threads on this subject you'll find the only thing the cool collar lacks is sufficient air flow over the fins.

I'm currently working on a bolt on 12v 150 cfm fan assembly
that will attach to the cool collar and privide constent air flow via
a snorkel that will suck air from the outside. After I complete it I am planning to post pics and drawings for the DIY'ers on the board.

Wish me Luck...

Jorge (Targa Dude)

[911pcars]

Jorge,
While many folks think/report the cool collar is an effective add-on, the jury may still be out on the effects of hot air coming off the cool collar. Since there are few other places for this heated air to go other than into the air shrouds via the intake fan, the question is: Does this add'l hot air increase the cooling load or does the cool collar compensate by losing more btu's; the net effect of which is to lower the oil temperature? Will your device add even more btu's to the intake cooling air?

I'm uncertain if you could find air that was cooler than ambient (I've got a product for that), but directing airflow directly onto the cool collar should promote better heat dissipation (recognizing the above caveats and a neat install). You could also use the intake end of the blower (inline type?) to draw heated air from around the cool collar area and direct it out of the engine compartment. Let us know what you discover.

Regards,
Sherwood Lee
http://members.rennlist.org/911pcars
www.seinesystems.com

[JMPRO]

A much simpler way to blow air over the cool collar would be to use the existing heater motor and add a y to the hose to direct the air to the collar before the air gets to the heater box. The heater switch is then adjusted so that the blower comes on before the heater ducts open and then unheated air is directed onto the collar without adding more wires and fans. maybe you could add a seinesystems mister to the duct for added cooling effect.
Jerry

[nhromyak]

I am curious Chuck,
Do the Oil filters you buy flow more oil than what is found from what I can buy in a Kragen's or Autozone, vs. a Porsche oil filter?

I don't recall how or when the oil gets filtered, I suspect it gets filtered before it goes into the oil tank. Then the oil tank feeds the motor.

Of course, I am not about to buy an oil filter relocation kit from JC whitney, as I am as worried as you, about its ability to flow oil properly.

Although, I certainly would like to be able to unscrew the filter without spilling oil all over my engine compartment. What kind of German Engineering is that?

Respectfully

[Chuck Moreland]

Nick,

I recommend the Mahle. Here is a great thread on the filter topic.

http://www.pelicanparts.com/cgi-bin/vb/showthread.php?s=&threadid=62592&perpage=20&pagenumber=2

I don't think there is a flow issue with the other brands. But read the thread and you will find a variety of quality related issues.

Filters are not created equal.

[nhromyak]

I think I am running the Mann's....

Thanks for the info!