Its been too cold and rainy here to start testing. waiting for mid 80s temps to return.

Plan to do three pulls in a row. Should be enough to see heat soak results.

Eric, I am testing some cores with 3" inlets/outlets. I have bumper that is cut up to clear all the coolers. The coolers are also going to be temp mounted without damaging them. So they will be in affect still new when done. The probes are mounted in the IC pipes so no holes get drilled in the coolers. I could include your core in testing if you are up for it.

 

I feel its very important to test in warm weather. When the air is cool and damp intercoolers work fantastic in general. When nisie did their testing they tested in 60 degree weather. They actually got some temps below ambient. This sounds impossible at first thought but I assure you its not. I made a post about it on the nisie forums.

In response to the question "can an air/air intercooler drop temps below ambient? I did a quick little test that answers the question.

Here is my digital dual probe temp gauge used for this simple test. It is about 78 degrees in my room as evident by both t1 and t2 probes.

Here is a picture of the probe t1 on my tounge. This is warm water at body temp.

Now here is the temp of probe t1 after a few seconds of removing it from my tongue. The warm water evaporates from the probe pulling temperature from the surface. the temp dropped to 72 but I couldn't snap a pic fast enough. That is 6 degrees below ambient.

No imagine an intercooler surface has about a million times more surface area than the tip of this little probe. I believe this simple test proves that moisture in the air that rests on the surface of the cooler pulls temp down below ambient when air evaporates from the surface. On a low 60 degree night there will be plenty of moisture in the air to cause this affect.

 

sweet, cant wait to see the results

 

94AWDcoupe:

Are you going to do a 4 probe test so its possible to measure the core effectiveness?

Requirements for core effective %:
- Ambient Temp
- Temp of the air behind the IC (how much heat its soaking up)
- Temp of charge air before IC
- Temp of the charge air after IC

Those combined with the size of the core we could calculate the effective range in lbs/min of air it can cool and how well the cores being used actually draw heat out in a efficiency percentage

 

sorry, I dont think probes before and after actual core will tell us much of anything.

temps will be recorded in four spots. ic pipe in, ic pipe out, at TB after meth, and ambient.

 

The test proves nothing actually as you are not forcing HOT air through the interior of the probe. No heat is being applied to any of the testing equipment.

 

This test should not be dead.

It will be a fair test with a car that is more modest and more likely that a regular Joe will have than a DB race prepped car.

Also, another good point of testing will be street core vs street core.

Not ebay core vs DB race core and 600whp

 

Ooops.

 

We'd love to be involved in your test if it's not too late! Get a hold of me by phone, E-mail or PM if you're interested in adding another intercooler to the list

Tom

 

I don't think that the heat has much relevance on the test. All this proves is that moisture on the metal can help bring temps below ambient. If the IC is efficient enough to bring the charge air close to ambient on its own, then by the results of this test, any moisture on the IC can help bring down the temp further, possibly below ambient.

I think thats what I have gathered from his test anyway.

 

I am going to unsubscribe............you guys enjoy. Saves argueing.

 

Thats exactly what happens. The intercooler surface temp drops below ambient as moisture evaporates off cooler. The warm air passing through inside is not enough to warm it back up to ambient. The below ambient temps were recorded in 1st and 2nd gear. In the higher gears the temp rose as normal.

 

damn 4 probe... you guys demand much.

 

this is a good analysis. thermodynamics is still workin'

 

I do belive this test is scientificly correct.
Anyway. The temps do matter. Btw. If your doing this take a picture of the inner core.I belive is any chinese company can copy the core itself. It will perform the exact same if not better?. Why wouldn't it? Is there a special core that sprayed with special cooling formula? Don't think so. I'd suggest you take these fmic for us evom members sake. I don't see why spending 1500$ when a 300$ is the same
What I'm saying. If the core patterns are the exact same. Its the SAME. Like an exhaust 3 inch is a 3 inch....same bends. Perform the freakin same

I suggest these fmic's

TurboXS
AMS
AGP
BR
Nisei
HKS
Greddy
Perrin
Ebay. A good one