Cool Collar, 12% reduction in oil temperature Options

[thomasotten]

What do you think? Gimmick? I find the 12% figure a little hard to believe. Maybe they were just measuring inlet/outlet temperature of the filter, not OVERALL oil temperature.

(IMG:http://content.madirect.com/img300/fr2423.jpg)

From the Tweeks website:

Tests have revealed a 12% reduction in oil temperature thanks to the Cool Collar, a finned aluminum cooler that increases the surface area by four times, allowing it to radiate heat faster and more efficiently. Unit fits all air and water-cooled Porsche oil filters with a simple slip-on, clamp down installation.

[dmenche914]

IR to read points on the oil lines, tank etc... and the dash gage reading all averaged??? What kind of oil temp measurement its that?

Give us the real world change in oil temp as seen at the dash gage measuring the oil in the sump (or oil tank if dry sump). That is what about 99% of us that measure oil temps use 99% of the time, not IR readings on oil lines (which I might assume are when the car is stopped, which can cause a heat soak factor to enter the numbers.)

I want to see how this nifty little device changes the bulk oil temp as measured in the bottom of the case or oil pan. If I see a significant difference there, then I will believe the product works. All the averaging of surface temps of oil lines and tanks required to prove this device works sounds too fishy too me. This is not how the majority of folks measure oil temps, a 12% (or 12 degree, there is some confusion on the posts) drop in the oil sump is considered by many to be significant, maybe what would be expected by the addition of a real oil cooler mounted in the airstream.

There is no way that this thing could cool any better than even the smallest auto oil cooler (with coils and fins). And the temps drops reported are hard to believe even for a regular add on oil cooler of small size (and mounted in the same air flow as the oil filter) Besides, on the 914 the air near the tucked in oil filter is probably pretty warm anyway.

I hear snakes a hissing.

[Hawktel]

I think someone with a assdragger on the Bird Board bought one and tried a variety of real world tests. Seemed the verdict was sometimes they did notice a very slight difference.

I think its not worth the time.

[Trekkor]

Adding a 2 foot long front mounted oil cooler reduced my temps by 14-15%.

I wish I had seen this sooner (IMG:http://www.914world.com/bbs2/html/emoticons/headbang.gif)




(IMG:http://www.914world.com/bbs2/html/emoticons/lol2.gif)


KT

[Brando]

For the cost... not really worth it.

Besides, they really fuck your hands up when trying to get them off doing an oil filter change. They're aimed at the crowd who believe everything they read in the Tweeks catalog and don't really seek real-world results.

[messix]

that thing rates right up there with the tornado thingy in the intake to increase air flow. junk!

[redshift]

QUOTE (airsix @ Jul 22 2004, 03:55 PM)

I think I get it. He probably measured the temp on both sides of a regular filter. Let's say (for example only - these are not real figures!) the temps were 215 going in and 212 coming out. A 3 degree change. He then measured the temp on both sides again with the heat sink in place.  Let's say it was 215 going in and 211.64 coming out.  The temp differential of 3 degrees increased by 12% or 0.34 degrees.  There you have it a "12% increase in cooling". Now this is purely speculation and I could be wrong. But I could be right. -Ben M.

(IMG:http://www.914world.com/bbs2/html/emoticons/huh.gif)


WHO CARES! IT'S A TURDLE NECK SWEATER FOR YOUR OIL FILTER!

If you had a metal oil filter, that was out in th... NEVERMIND!


M

[Twystd1]

So let me get this straight..

If I get hot under the collar, I'm supposed to put this on my filter?

What?

Twystd1

[Andyrew]

I'll get one, test it, and put it on my easy access v8...

I'll put my hand on the filter and tell yall if it gets cooler with da thingy!!!

[ArtechnikA]

QUOTE (lapuwali @ Jul 22 2004, 11:49 AM)

For quite a few years, and perhaps still, a number of high-performance bikes had an oil cooler than was built into the spin-on filter mount, which circulated engine coolant around the oil passages. This appeared to work well enough to justify its inclusion on a good number of bikes. Not a lot of surface area there for heat transfer, and the coolant would have been at 180-190dF itself.

the VW GTI/GLI oil cooler is just like that, and it works pretty darned well IME. liquid/liquid heat exchangers are pretty efficient. since it's jacket water, it tends to heat the oil to operating temp fast and then it keeps it around 185F. the heat is actually rejected to the airstream by the big front-mounted radiator, so you don't have more aero drag and you don't have two kinds of plumbing.

for a street car that only occasionally operates at high loads for a long time (which tend to increase both water and oil temps) it does a pretty good job of operating the engine in a fairly narrow well-regulated temperature range.